A sewing machine, a sewing machine bone stitch reversing device and method

Abstract

The application discloses a sewing machine, a bone sewing reversing device and method. The reversing device comprises a sewing table with a bone sewing reversing area, a blowing plate connected with a plate driving device, the plate driving device is used to drive the blowing plate to enter or exit the space above the bone sewing reversing area, after entering the space above the bone sewing reversing area, the blowing direction of the plate blowing port of the blowing plate is parallel to the preset sewing direction, the plate driving device is also used to drive the blowing plate to reciprocate along the linear direction of the preset sewing direction, and a lower blowing pipe with a pipe blowing port above the sewing table, the pipe blowing port blows gas towards the preset lower pressing area on the sewing table, and the bone sewing reversing area is located in the preset lower pressing area. The blowing plate can replace manual bone reversing operation under the driving of the plate driving device, the bone reversing efficiency is improved, the blowing plate can provide blowing and mechanical double bone reversing operation, and the bone reversing effect is improved. The lower blowing pipe can use gas to press the fabric, and prevents the fabric from swelling and tilting.

Description

Technical Field

[0001] This invention relates to the field of sewing equipment technology, and in particular to a sewing machine, a sewing machine seam reversing device and method. Background Technology

[0002] Currently, there are certain requirements regarding the direction of seam retraction in garment manufacturing processes. However, in existing seam retraction operations, the seams are retracted entirely manually by the operator, which is time-consuming, labor-intensive, and inefficient.

[0003] Therefore, how to improve the efficiency of bone-removing operations is a technical problem that needs to be solved by those skilled in the art. Summary of the Invention

[0004] In view of this, the object of the present invention is to provide a sewing machine seam reversing device and method, which can improve the efficiency of seam reversing operation. Another object of the present invention is to provide a sewing machine including the above-mentioned sewing machine seam reversing device, wherein the sewing machine seam reversing device can improve the efficiency of seam reversing operation.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A sewing machine seam reversing device, comprising:

[0007] A suture table having a suture-inverted area;

[0008] An air blowing plate is connected to a plate driving device. The plate driving device is used to drive the air blowing plate into or out of the space above the bone suture tilting area. After entering the space above the bone suture tilting area, the air blowing direction of the air blowing port of the air blowing plate is parallel to the preset sewing direction. The plate driving device is also used to drive the air blowing plate to reciprocate along the linear direction of the preset sewing direction.

[0009] A pressure-blowing tube is provided, with the air inlet of the tube located above the suture platform and blowing air towards a preset pressure area on the suture platform. The bone suture tilting area is located within the preset pressure area.

[0010] Preferably, the board driving device includes a first board linear driver and a second board linear driver connected between the first board linear driver and the air blowing plate; the motion direction output by the first board linear driver is perpendicular to the lifting direction and the preset sewing direction, and the motion direction output by the second board linear driver is parallel to the preset sewing direction.

[0011] Preferably, it further includes a first driver bracket fixed below the sewing platform, the first plate linear driver being disposed on the first driver bracket; the first driver bracket is connected to a second driver bracket via a first guide assembly, and the guide direction is parallel to the movement direction output by the first plate linear driver; the second plate linear driver is disposed on the second driver bracket.

[0012] Preferably, the plate driving device further includes a buffer, which is fixed on the second driver bracket. During the process of the first plate linear driver driving the air blowing plate into the space above the bone suture tilting area, the air blowing plate can move up to the end of the buffer abutting against the first driver bracket.

[0013] Preferably, the air inlets of the two downward air blowing pipes are arranged sequentially along the preset sewing direction.

[0014] Preferably, it further includes a pressing drive device and a fabric pressing bracket disposed above the sewing table. The pressing drive device is used to drive the fabric pressing bracket to move up and down above the sewing table, and the pressing point of the fabric pressing bracket on the sewing table is located within the preset pressing area.

[0015] Preferably, the bottom of the fabric support consists of two pressure plates arranged sequentially along the sewing direction, and the suture-facing area is located between the two pressure plates.

[0016] Preferably, it also includes a bone joint detection device, the air blowing plate and the downward air blowing pipe are connected to the air supply device, and the bone joint detection device, the plate driving device and the air supply device are communicatively connected to the control device.

[0017] Preferably, it further includes a baffle fixed to the suture table, and the baffle is located on one side of the suture inverted area in a direction perpendicular to the preset sewing direction.

[0018] Preferably, the baffle is provided with a baffle air pipe, and the air outlet of the baffle air pipe is located on the side of the baffle near the area where the bone suture is tilted.

[0019] A sewing machine, including the sewing machine seam reversing device as described above.

[0020] A sewing machine seam reversing method, using the sewing machine seam reversing device described above;

[0021] The method includes:

[0022] After the air blowing plate is controlled to enter the space above the seam retraction area, the air blowing pipe is controlled to blow air to press down the fabric, and the air blowing port of the air blowing plate is controlled to blow air, with the blowing direction parallel to the preset sewing direction, so that the seam on the fabric is retracted to the side closer to the presser foot on the sewing table, wherein the fabric is located in the preset pressing area, and the air blowing port and presser foot are arranged sequentially along the preset sewing direction;

[0023] Control the air blowing plate to move back and forth at least once along the preset sewing direction so that the air blowing plate pushes down the seam of the fabric;

[0024] The air blowing plate is controlled to exit the seam retraction area, and the air blowing port of the air blowing plate blows air during the exit process to further smooth the seam of the fabric.

[0025] The sewing machine seam reversing device provided by the present invention includes: a sewing table having a seam reversing area; an air blowing plate connected to a plate driving device, the plate driving device being used to drive the air blowing plate into or out of the space above the seam reversing area, and after entering the space above the seam reversing area, the air blowing direction of the air blowing port of the air blowing plate is parallel to a preset sewing direction, and the plate driving device is also used to drive the air blowing plate to reciprocate along the linear direction of the preset sewing direction; and a pressing air pipe, the air blowing port of the pressing air pipe being located above the sewing table, and the air blowing port of the pressing air pipe blowing air towards a preset pressing area on the sewing table, the seam reversing area being located within the preset pressing area.

[0026] Driven by a plate drive device, the air-blowing plate can automate the deboning process, replacing manual labor and improving deboning efficiency. The air-blowing plate provides both air-blowing and mechanical deboning operations, enhancing the deboning effect. Simultaneously, the downward-pressing air pipe utilizes gas to press down on the fabric, preventing it from expanding and tilting. Furthermore, the gas pressure reduces indentations on the fabric. Additionally, since the deboning area is located within a preset pressing zone, the downward-pressing air pipe ensures that the air acts on the fabric near the deboning area, facilitating a smooth deboning operation.

[0027] The sewing machine seam reversing method and sewing machine provided by the present invention can improve the efficiency of seam reversing operation by applying the above-mentioned sewing machine seam reversing device. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0029] Figure 1 This is a first-view structural diagram of a specific embodiment of the sewing machine seam reversing device provided by the present invention;

[0030] Figure 2 This is a second-view structural diagram of a specific embodiment of the sewing machine seam reversing device provided by the present invention;

[0031] Figure 3 This is a structural diagram of the pressing device in a specific embodiment of the sewing machine seam reversing device provided by the present invention;

[0032] Figure 4 A top view of a specific embodiment of the sewing machine seam reversing device provided by the present invention;

[0033] Figure 5 This is a front view of a specific embodiment of the sewing machine seam reversing device provided by the present invention;

[0034] Figure 6 This is a side view of a specific embodiment of the sewing machine seam reversing device provided by the present invention.

[0035] Figure label:

[0036] The suture is tilted towards area A, the pre-set pressing area B, and the pre-set sewing direction X;

[0037] Presser foot 1;

[0038] Sewing table 2;

[0039] The board drive device 3 includes a first board linear driver 31, a second board linear driver 32, a first driver bracket 33, a second board driver bracket 34, a buffer 35, a first slide bar 36, and a first slide rail 37.

[0040] Air blowing plate 4, air blowing port 41;

[0041] Downward-pressing air pipe 5, downward-pressing mounting bracket 51;

[0042] Downward pressure drive device 6, cloth pressing bracket 61, pressure plate 62;

[0043] Baffle 7, baffle air pipe 71. Detailed Implementation

[0044] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0045] The core of this invention is to provide a sewing machine seam reversing device and method, which can improve the efficiency of seam reversing operations. Another core aspect of this invention is to provide a sewing machine including the above-mentioned seam reversing device, wherein the seam reversing device can improve the efficiency of seam reversing operations.

[0046] In the first specific embodiment of the sewing machine seam reversing device provided by the present invention, please refer to... Figures 1 to 6 It includes a sewing table 2, which has a suture-facing area A. Specifically, a presser foot 1 is provided above the sewing table 2, and the suture-facing area A and the presser foot 1 are arranged sequentially along a preset sewing direction X.

[0047] Meanwhile, the sewing machine's seam reversing device also includes an air blowing plate 4, which is connected to the plate drive device 3. The plate drive device 3 is used to drive the air blowing plate 4 into or out of the space above the seam reversing area A. After entering the space above the seam reversing area A, the air blowing direction of the plate blowing port 41 of the air blowing plate 4 is parallel to the preset sewing direction X, specifically facing the direction where the presser foot 1 is located. The plate drive device 3 is also used to drive the air blowing plate 4 to reciprocate along the linear direction of the preset sewing direction X.

[0048] In addition, such as Figure 2 and Figure 3 As shown, the sewing machine's seam reversing device also includes a downward air blowing pipe 5. The air blowing port of the downward air blowing pipe 5 is located above the sewing table 2, and the air blowing port blows air towards the preset downward pressure area B on the sewing table 2. The seam reversing area A is located within the preset downward pressure area B. During the seam reversing process, the seam on the fabric is within the preset downward pressure area B.

[0049] During the sewing process, the material is fed along the preset sewing direction X. When the seam enters the seam-folding area A, the plate drive device 3 drives the air blowing plate 4 to enter the seam-folding area A. Specifically, the seam is located between the plate air blowing port 41 of the air blowing plate 4 and the presser foot 1. The air blowing port of the down-pressing air pipe 5 blows the fabric downwards, and the plate air blowing port 41 of the air blowing plate 4 blows air towards the seam, causing the seam to fold towards the side where the presser foot 1 is located. Then, the plate drive device 3 drives the air blowing plate 4 to move along the preset sewing direction X, so that the air blowing plate 4 can mechanically push the seam down again.

[0050] As can be seen, the air-blowing plate 4, driven by the plate drive device 3, can replace manual labor to achieve automated bone-removing operations, thereby improving bone-removing efficiency. The air-blowing plate 4 can provide dual bone-removing operations of air and machinery, which can improve the bone-removing effect. At the same time, based on the setting of the downward air-blowing pipe 5, the fabric can be pressed down by gas to prevent the fabric from expanding and tilting. Moreover, the use of gas pressure can reduce the indentations on the fabric. In addition, since the bone seam removal area A is located in the preset downward pressure area B, it can be ensured that the downward air-blowing pipe 5 acts on the fabric near the bone seam, which is conducive to ensuring the smooth progress of the bone-removing operation.

[0051] Furthermore, such as Figure 1 As shown, the board drive device 3 includes a first board linear driver 31 and a second board linear driver 32 connected between the first board linear driver 31 and the air blowing plate 4. Specifically, the first board linear driver 31 and the second board linear driver 32 are cylinders. The movement direction output by the first board linear driver 31 is perpendicular to the lifting direction and the preset sewing direction X. The movement direction output by the second board linear driver 32 is parallel to the preset sewing direction X. Specifically, the movement direction output by the first board linear driver 31, the lifting direction, and the preset sewing direction X are all perpendicular to each other. Since the movement direction output by the first board linear driver 31 is perpendicular to the movement direction output by the second board linear driver 32, it is convenient to plan the movement stroke of both as needed.

[0052] Of course, in other embodiments, the plate drive device 3 may also include a plate lifting driver, the output of which is connected to the first plate linear driver 31 to drive the air blowing plate 4 to move up and down. Alternatively, the first plate linear driver 31 may be replaced by other drivers that output arc motion.

[0053] Furthermore, such as Figure 1 As shown, the sewing machine seam reversing device also includes a first driver bracket 33 fixed below the sewing table 2, and a first plate linear driver 31 is mounted on the first driver bracket 33. The first driver bracket 33 is connected to a second driver bracket 34 via a first guide assembly, and the guide direction is parallel to the movement direction output by the first plate linear driver 31. The second plate linear driver 32 is mounted on the second driver bracket 34. Specifically, the first guide assembly includes a first slide rail 37 located on the side of the first driver bracket 33 and a first slide rod 36 slidably connected in the first slide rail 37, and the second driver bracket 34 is fixed to the first slide rod 36.

[0054] By setting the first wire assembly, the smoothness of the movement of the air blowing plate 4 and the second plate linear driver 32 during the driving process of the first plate linear driver 31 can be improved.

[0055] Furthermore, such as Figure 5 As shown, the plate drive device 3 also includes a buffer 35, which is fixed to the second driver bracket 34. During the process of the first plate linear driver 31 driving the air blowing plate 4 into the space above the bone suture tilting area A, the air blowing plate 4 can move at most until the end of the buffer 35 abuts against the first driver bracket 33.

[0056] based on Figure 4 and Figure 5As shown, when the first plate linear actuator 31 drives the air blowing plate 4 into the space above the bone suture tilting area A, it moves to the right. When it moves to the limit position in this direction, the end of the buffer 35 abuts against the first actuator bracket 33. Since the buffer 35 has a buffering effect, specifically it can have a certain elasticity, so that the stroke of the air blowing plate 4 in this direction has a certain adjustment space.

[0057] Furthermore, such as Figure 4 As shown, the air inlets of the two downward air blowing pipes 5 are arranged sequentially along the preset sewing direction X, which enables the fabric to be uniformly pressed down by the gas.

[0058] Furthermore, such as Figure 3 and Figure 4 As shown, the sewing machine's seam reversing device also includes a pressing drive 6 and a fabric pressing bracket 61 located above the sewing table 2. The pressing drive 6 is a cylinder, but it can also be a linear motor. The pressing drive 6 is used to drive the fabric pressing bracket 61 to move up and down above the sewing table 2, and the pressing point of the fabric pressing bracket 61 on the sewing table 2 is located within a preset pressing area B.

[0059] Specifically, such as Figure 1 and Figure 2 As shown, a pressing mounting bracket 51 is set above the sewing table 2. The pressing air pipe 5 and the pressing drive device 6 are both set on the pressing mounting bracket 51 so as to uniformly determine the working range of the pressing cloth bracket 61 and the pressing air pipe 5.

[0060] By combining mechanical pressure with the aforementioned air-blowing pressure, the pressure effect on the fabric can be further ensured.

[0061] Furthermore, the bottom of the fabric support 61 consists of two pressure plates 62 arranged sequentially along the sewing direction, and the seam-facing area A is located between the two pressure plates 62. In other words, the area where the air blowing plate 4 blows air is located between the two pressure plates 62, and the fabric near the seam can be prevented from floating when the air blowing plate 4 blows air by mechanically pressing down.

[0062] Of course, in other embodiments, the pressure support 61 can also be configured in other ways, for example, four pressure plates 62 can be arranged sequentially around the edge of the preset pressing area B.

[0063] Furthermore, the sewing machine's seam reversing device also includes a seam detection device. The air blowing plate 4 and the downward air blowing pipe 5 are connected to the air supply device. The seam detection device, the plate drive device 3, and the air supply device are communicatively connected to the control device. Specifically, the seam detection device can be a sensor used to detect whether the seam has passed a preset detection position. The control device can control the start and stop times of the plate drive device 3 and the air supply device based on the detection results of the seam detection device, thereby improving the automation level of the air blowing plate movement and air blowing.

[0064] Furthermore, such as Figure 1 As shown, the sewing machine's seam guiding device also includes a baffle 7 fixed to the sewing table 2. The baffle 7 is located on one side of the seam guiding area A, perpendicular to the preset sewing direction X. An air blowing plate 4 is located on the other side of this direction. The fabric can move forward along the baffle 7, which guides the fabric.

[0065] Furthermore, a baffle air pipe 71 is provided on the baffle 7. The air outlet of the baffle air pipe 71 is located on the side of the baffle 7 near the seam-facing area A. The air outlet of the baffle air pipe blows air towards the fabric, which can improve the flatness of the fabric on the sewing table 2.

[0066] The sewing machine seam reversing device provided in this embodiment operates for a period of time after the seam detection device detects the seam, ensuring that the seam enters the preset pressing area B. Then, the pressing drive device 6 drives the pressing bracket to move down and press down on the fabric. After that, the first plate linear driver 31 drives the second plate linear driver 32 and the air blowing plate 4 to move, so that the air blowing plate 4 enters above the seam reversing area A. The pressing air pipe 5 starts blowing air to press down on the fabric to prevent the fabric from expanding and tilting. The air blowing plate 4 also blows air strongly once, so that the seam reversing towards the side closer to the presser foot 1. After the air blowing plate 4 finishes its movement, the second plate linear driver 32 drives the air blowing plate 4 to move forward a certain distance along the preset sewing direction X and then retracts, so that the air blowing plate 4 mechanically pushes down the seam. After that, the first plate linear driver 31 returns to the initial state, and during the retraction process, the air blowing plate 4 blows air weakly to further smooth the seam of the fabric. After that, the pressing drive device 6 is controlled to reset.

[0067] In addition to the aforementioned sewing machine seam reversing device, this invention also provides a sewing machine including a sewing machine seam reversing device, which can specifically be the sewing machine seam reversing device provided in any of the above embodiments. The beneficial effects can be referred to the respective embodiments above. The sewing machine also includes a presser foot, needle, and other structures, which can be referred to in the prior art and will not be elaborated upon here.

[0068] In addition, the present invention also provides a sewing machine seam reversing method, which can be implemented by applying the sewing machine seam reversing device in any of the above embodiments.

[0069] Specifically, the method includes the following steps:

[0070] S1: After the air blowing plate 4 enters the space above the seam-to-side area A, the air blowing pipe 5 is controlled to blow air to press down the fabric, and the air blowing port 41 of the air blowing plate 4 is controlled to blow air in a direction parallel to the preset sewing direction X, so that the seam on the fabric is turned towards the side closer to the presser foot 1 on the sewing table 2.

[0071] The fabric is located in the preset pressing area B, and the air inlet 41 and presser foot 1 are arranged sequentially along the preset sewing direction X. Additionally, the air inlet plate 4 is moved by controlling the operation of the panel drive device 3.

[0072] S2: Control the air blowing plate 4 to move back and forth at least once along the preset sewing direction X, so that the air blowing plate 4 pushes down the seam of the fabric.

[0073] In S2, the air blowing plate 4 can stop blowing air.

[0074] S3: Control the air blowing plate 4 to exit the seam-to-side area A, and the air blowing port 41 of the air blowing plate 4 blows air during the exit process to further smooth the seam of the fabric.

[0075] Specifically, the blowing intensity of the air blowing plate 4 in S3 can be less than the blowing intensity of the air blowing plate 4 in S1.

[0076] It should be noted that when a component is said to be "fixed" to another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected" to another component, it can be directly connected to the other component or there may be an intervening component.

[0077] The terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0078] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0079] 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.

[0080] The sewing machine seam reversing device and method provided by the present invention have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A sewing machine seam reversing device, characterized in that, include: Suture table (2), wherein the suture table (2) has a suture inversion area (A); An air blowing plate (4) is connected to a plate driving device (3). The plate driving device (3) is used to drive the air blowing plate (4) into or out of the space above the suture inclination area (A). After entering the space above the suture inclination area (A), the air blowing direction of the plate blowing port (41) of the air blowing plate (4) is parallel to the preset suturing direction (X). The plate driving device (3) is also used to drive the air blowing plate (4) along the preset suturing direction (X). Assume that the linear direction of the sewing direction (X) is reciprocating, wherein after the air blowing plate (4) enters above the bone seam tilting area (A), the air blowing plate (4) blows air to tilt the bone seam towards the side closer to the presser foot (1). The air blowing plate (4) moves forward a certain distance along the preset sewing direction (X) and then retracts, so that the air blowing plate (4) mechanically pushes down the bone seam. During the retraction process, the air blowing plate (4) blows air to further smooth the bone seam. The air blowing pipe (5) is pressed down, and the air blowing port of the air blowing pipe (5) is located above the sewing platform (2), and the air blowing port of the air blowing pipe blows air towards the fabric of the preset pressing area (B) on the sewing platform (2), and the bone seam tilting area (A) is located within the preset pressing area (B). A baffle (7) fixed on the sewing table (2) is located on one side of the seam retraction area (A) in a direction perpendicular to the preset sewing direction (X). A baffle air pipe (71) is provided on the baffle (7). The air outlet of the baffle air pipe (71) is located on the side of the baffle (7) near the seam retraction area (A). The fabric moves forward along the baffle (7) and the air outlet of the baffle air pipe blows air towards the fabric.

2. The sewing machine seam reversing device according to claim 1, characterized in that, The plate drive device (3) includes a first plate linear driver (31) and a second plate linear driver (32) connected between the first plate linear driver (31) and the air blowing plate (4); the motion direction output by the first plate linear driver (31) is perpendicular to the lifting direction and the preset sewing direction (X), and the motion direction output by the second plate linear driver (32) is parallel to the preset sewing direction (X).

3. The sewing machine seam reversing device according to claim 2, characterized in that, It also includes a first driver bracket (33) fixed below the sewing platform (2), the first plate linear driver (31) is disposed on the first driver bracket (33); the first driver bracket (33) is connected to a second driver bracket (34) through a first guide component, and the guide direction is parallel to the movement direction output by the first plate linear driver (31); the second plate linear driver (32) is disposed on the second driver bracket (34).

4. The sewing machine seam reversing device according to claim 3, characterized in that, The plate drive device (3) further includes a buffer (35), which is fixed on the second driver bracket (34). During the process of the first plate linear driver (31) driving the air blowing plate (4) into the space above the bone suture inversion area (A), the air blowing plate (4) can move up to the end of the buffer (35) and abut against the first driver bracket (33).

5. The sewing machine seam reversing device according to any one of claims 1 to 4, characterized in that, The air inlets of the two down-pressing air pipes (5) are arranged sequentially along the preset sewing direction (X).

6. The sewing machine seam reversing device according to any one of claims 1 to 4, characterized in that, It also includes a pressing drive device (6) and a fabric pressing bracket (61) located above the sewing table (2). The pressing drive device (6) is used to drive the fabric pressing bracket (61) to move up and down above the sewing table (2). The pressing point of the fabric pressing bracket (61) on the sewing table (2) is located within the preset pressing area (B).

7. The sewing machine seam reversing device according to claim 6, characterized in that, The bottom of the pressure fabric support (61) consists of two pressure plates (62) arranged sequentially along the preset sewing direction (X), and the bone suture inclination area (A) is located between the two pressure plates (62).

8. The sewing machine seam reversing device according to any one of claims 1 to 4, characterized in that, It also includes a bone joint detection device, the air blowing plate (4) and the downward air blowing pipe (5) are connected to the air supply device, and the bone joint detection device, the plate drive device (3) and the air supply device are communicatively connected to the control device.

9. A sewing machine, characterized in that, Includes the sewing machine seam reversing device as described in any one of claims 1 to 8.

10. A method for reversing the seam direction in a sewing machine, characterized in that, The sewing machine seam reversing device according to any one of claims 1 to 8 is applied; The method includes: After the air blowing plate (4) is controlled to enter the space above the suture-towards-the-area (A), the air blowing pipe (5) is controlled to blow air to press down the fabric, and the air blowing port (41) of the air blowing plate (4) is controlled to blow air in a direction parallel to the preset sewing direction (X), so that the suture on the fabric is turned towards the side close to the presser foot (1) on the sewing table (2), wherein the fabric is located in the preset pressing area (B), and the air blowing port (41) and the presser foot (1) are arranged in sequence along the preset sewing direction (X); Control the air blowing plate (4) to move back and forth at least once along the preset sewing direction (X) so that the air blowing plate (4) pushes down the seam of the fabric; Control the air blowing plate (4) to exit the seam retraction area (A), and the air blowing port (41) of the air blowing plate (4) blows air during the exit process to further smooth the seam of the fabric.

Images