Automatic jointer anti-winding device

Abstract

The application discloses an automatic joint machine anti-winding device, which comprises a feeding plane, the feeding plane is provided with a sewing machine head at one side, and an elastic anti-winding plate is arranged at the end of the feeding plane close to the sewing machine head, the elastic anti-winding plate can abut against the to-be-jointed sheet material, and the elastic anti-winding plate can press the to-be-jointed sheet material on the feeding plane. The automatic joint machine anti-winding device can fix and flatten the to-be-jointed sheet material, ensure the flat state of the to-be-jointed sheet material when entering the sewing position, has a certain tensioning effect on the to-be-jointed sheet material, and avoids displacement of the to-be-jointed sheet material when the sewing needle pulls the to-be-jointed sheet material.

Description

Technical Field

[0001] This invention relates to the field of sewing machine technology, and more particularly to an anti-rolling device for an automatic sewing machine. Background Technology

[0002] In the modern sewing machine industry, fully automated sewing equipment is generally used. Compared with traditional sewing equipment, it can achieve higher sewing efficiency, reduce the physical burden on operators, and reduce safety risks, thus its development has been relatively rapid. However, during the sewing process, the pulling of the sewing needle can cause wrinkles in the fabric, especially during the splicing process. Wrinkles between different fabrics can cause errors in the sewing of the fabric pieces, resulting in skewed seams and uneven tension.

[0003] For example, publication number "CN212955631U" discloses "a fabric sewing mechanism for a sewing flag machine," comprising: a first sewing mechanism and a second sewing mechanism arranged opposite to each other, with a first feeding component and a second feeding component at the front end of the first and second sewing mechanisms; wherein, the first sewing mechanism is used to sew two pieces of fabric together; and the second sewing mechanism is used to sew another piece of fabric onto the fabric processed at the first sewing mechanism. However, in practical applications, during the sewing process, the pulling of the sewing needle causes wrinkles in the fabric around the sewing point, which can lead to sewing deviations, making the sewing point too tight or too loose, and consequently affecting the flatness of the fabric on the feeding device. Summary of the Invention

[0004] In view of the problem mentioned in the background art that the pulling of the sewing needle will cause a lot of wrinkles on the fabric, the present invention provides an anti-rolling device for an automatic sewing machine, which can fix and flatten the sheet to be sewn, ensuring that the sheet to be sewn is flat when it enters the sewing area, and at the same time has a certain tensioning effect on the sheet to be sewn, so as to avoid excessive displacement when the sewing needle is pulled out of the sheet to be sewn.

[0005] To achieve the above objectives, the present invention adopts the following technical solution.

[0006] An anti-roll-up device for an automatic sewing machine includes a feeding plane on which a sheet to be sewn is conveyed. A sewing machine head is provided on the side of the feeding plane. An elastic anti-roll-up plate is provided at one end of the feeding plane near the sewing machine head. The elastic anti-roll-up plate can withstand the sheet to be sewn and presses the sheet to be sewn onto the feeding plane. A conveyor belt is installed on the feeding plane. The sheet material to be assembled placed on the feeding plane will move along with the feeding plane during the sewing process, thus mimicking the feeding steps in the manual processing process. The sewing machine head sews the conveyed sheet material. An elastic anti-roll plate is set at one end of the conveying direction near the sewing machine head and abuts against the sheet material to be assembled, so that the sheet material can be squeezed and adhered to the feeding plane. It generates a certain relative reverse pulling force on the moving sheet material to be assembled, so that the surface of the sheet material is taut, thereby reducing the pulling effect of the sewing machine head processing on the sheet material to be assembled. At the same time, the sheet material to be assembled is kept between the elastic anti-roll plate and the feeding plane before entering the sewing area, eliminating the deformation gap of the sheet material to be assembled and ensuring the flatness of the sheet material to be assembled.

[0007] Preferably, the elastic anti-roll plate includes a base plate, on which an anti-roll pressure plate is rotatably connected. The anti-roll pressure plate includes an adhesive plate that abuts against the sheet material to be assembled. The rotatable connection between the base plate and the anti-roll pressure plate increases the flexibility of the elastic anti-roll plate, allowing for easy placement of the sheet material by rotating the elastic anti-roll plate.

[0008] Preferably, a restoring component is provided between the anti-rolling pressure plate and the base plate. The restoring component is provided between the anti-rolling pressure plate and the base plate so that the anti-rolling pressure plate can be restored to its original position after rotation. The restoring component includes, but is not limited to, parts with elastic deformation such as top springs and torsion springs.

[0009] Preferably, a mounting plate is connected to the base plate, and a pushing member is connected to the mounting plate. The pushing member abuts against the anti-winding pressure plate. When placing the sheet material to be assembled, the pushing member pushes the anti-winding pressure plate to move. The anti-winding pressure plate rotates around the pivot on the base plate and separates from the conveying plane. After the sheet material to be assembled is placed on it, the pushing member retracts, and the anti-winding pressure plate presses down on the sheet material to be assembled under the action of the resetting member. The pushing member includes, but is not limited to, a drive cylinder, a drive motor, etc.

[0010] Preferably, the bonding plate has a flattened bevel on the side away from the sewing machine head. During the movement of the sheet to be assembled, the folds generated on the sheet may be squeezed and overlapped when they enter between the bonding plate and the feeding plane. Subsequently, the pressing of the bonding plate will make the folds firm and not easy to spring back, which has a significant impact on the flatness of the subsequent product. The direction of the flattening bevel is neither perpendicular to nor coincident with the direction of movement of the sheet to be assembled. When the folds move to the flattening bevel, they can be gradually flattened. The flattening bevel is set on the side close to the edge of the sheet to be assembled that needs to be sewn, ensuring the flatness of the sewing path. Preferably, there is a slanted angle between the flattening bevel and the feeding plane, so that the flattening bevel is slightly raised. The plane of the angle of the flattening bevel is perpendicular to the edge of the flattening bevel. During the movement of the sheet to be assembled, a large fold bulge is generated. The raised edge of the flattening bevel gradually reduces the size of the fold bulge, making the fold elimination process smoother and avoiding the overlap and indentation on both sides of the fold after the large fold is flattened instantly.

[0011] Preferably, the anti-rolling pressure plate includes an adhesive plate, and a baffle is provided on the side of the base plate near the adhesive plate. Since the sewing machine is generally an overlock sewing machine during the splicing process, it will make a quantitative cut along the edge of the sheet to be spliced. The baffle can limit the edge of the sheet during operation. An adjustment hole is provided on the base plate, and the base plate controls the lateral distance between itself and the sewing head by adjusting the adjustment hole, thereby controlling the cutting size of the overlock sewing machine within the expected range and avoiding excessive cutting. Simultaneously, a correction mechanism is provided on the side of the baffle away from the sewing machine to control the edge of the sheet in real time, preventing the edge of the sheet from constantly moving towards the baffle, which would result in an excessively large cut size. The baffle and the correction mechanism work together to form a secondary protective function.

[0012] Preferably, the base plate is provided with a clearance groove, and the baffles are provided on both sides of the clearance groove and integrally formed with the base plate. The clearance groove on the base plate ensures that the anti-rolling sheet is not interfered with by the base plate during rotation. The clearance groove is created by cutting during the manufacturing process, and the baffles on both sides of the clearance groove are formed by stamping deformation, resulting in lower processing costs. The baffles on both sides of the clearance groove can shield and protect the sides of the sheet to be assembled pressed on the bonding plate, preventing excessive offset of the sheet and avoiding jamming between the sheet and the sewing machine during sewing.

[0013] Preferably, the elastic anti-roll plate is provided with a separation plate on the side away from the sewing machine head, and the sheet to be assembled includes an upper sheet and a lower sheet, with the separation plate disposed between the upper sheet and the lower sheet. The separating plate is located on the side of the elastic anti-roll plate away from the sewing machine head. During the sewing process, the sheets to be sewn are generally divided into two pieces, an upper sheet and a lower sheet. Before entering the elastic anti-roll plate, the upper and lower sheets are temporarily separated by the separating plate. The two ends of the sheets to be sewn are equipped with fixing devices to fix and transport the entire sheet. Therefore, the separating plate will cause the upper and lower sheets to bulge upwards and downwards. Before the sheets are transported to the separating plate, the wrinkles between the two sheets will affect each other and overlap. When they reach the edge of the separating plate, the upper sheet shifts upwards and the lower sheet shifts downwards. The edge of the separating plate will first smooth out the wrinkles and curled edges. The edge of the separating plate near the elastic anti-roll plate will smooth out the sheets to be sewn a second time, maximizing the flatness of the sheets to be sewn into the bonding plate.

[0014] Preferably, the separating plate is provided with a damping surface, and both the upper and lower sheets abut against the damping surface. Providing a damping surface on the surface of the separating plate increases the adsorption and pulling force of the separating plate on the sheets to be joined, resulting in better tension between the separating plate and the sewing machine head, which helps reduce the formation of wrinkles.

[0015] Preferably, the separating plate is equipped with a reversing upper roller and a reversing lower roller. The reversing upper roller contacts the upper sheet, and the reversing lower roller contacts the lower sheet. The reversing upper roller and the reversing lower roller rotate in opposite directions. Through the reverse rotation between the reversing upper roller and the reversing lower roller, when the sheet to be assembled enters the separating plate, a pulling force opposite to the direction of movement can be applied to the sheet to be assembled, resulting in better tension of the sheet to be assembled. At the same time, the rolling reversing upper roller and the reversing lower roller have a certain ability to remove wrinkles. Preferably, a flattening thread is provided on the roller surface to improve the flattening and wrinkle removal effect. When setting the reversing upper roller and the reversing lower roller, the sheet to be assembled needs to be in contact with both ends of the separating plate and the reversing upper roller and the reversing lower roller simultaneously to ensure the wrinkle removal and anti-rolling effect of the separating plate.

[0016] The beneficial effects of this invention are as follows:

[0017] (1) By setting an elastic anti-roll plate in front of the sewing machine head, the pulling force on the sheet to be spliced ​​is increased, and the pulling effect of the sewing needle on the sheet to be spliced ​​is reduced. At the same time, the elastic anti-roll plate and the feeding plane are in contact with the sheet to be spliced, so that the sheet to be spliced ​​can remain flat when it enters the sewing area.

[0018] (2) By setting the flattening bevel, the sheet material to be assembled into the laminating board can be flattened and wrinkled, avoiding the laminating board from pressing the sheet material to be assembled into creases. At the same time, the curling edge of the flattening bevel can make the wrinkle removal process smoother and avoid encountering large creases and causing crease overlap.

[0019] (3) The baffle can block the edge of the sheet to be spliced ​​to avoid excessive offset distance. At the same time, the baffle can be adjusted with the base plate to control the cutting range of the sewing machine on the sheet to be spliced.

[0020] (4) The upper sheet and the lower sheet are separated by the separating plate to eliminate the mutual influence between the two sheets to be spliced. At the same time, the edges of the separating plate are used to remove wrinkles and prevent curling of the sheets to be spliced.

[0021] (5) A flipping upper roller and a flipping lower roller are set on the separating plate so that the tension of the sheet to be joined between the separating plate and the sewing machine head is better, which can offset the pulling force of the sewing machine on the sheet to be joined, and at the same time, a further wrinkle removal effect can be obtained to improve the flatness. Attached Figure Description

[0022] Figure 1 This is an isometric view of the present invention.

[0023] Figure 2 yes Figure 1 A schematic diagram of the structure of a medium-elasticity anti-roll plate.

[0024] Figure 3 This is a schematic diagram of the structure of Example 2.

[0025] Figure 4 This is a schematic diagram of the structure of Example 3.

[0026] Figure 5 This is a structural schematic diagram of Example 4.

[0027] Figure 6 This is a structural schematic diagram of Example 5.

[0028] In the diagram: 1 Feeding plane, 2 Sheet to be assembled, 3 Sewing machine head, 4 Elastic anti-roll plate, 41 Base plate, 42 Anti-roll pressing plate, 43 Bonding plate, 45 Mounting plate, 46 Pushing component, 431 Flattening bevel, 411 Baffle, 412 Relief groove, 5 Separation plate, 21 Upper sheet, 22 Lower sheet, 61 Reversing upper roller, 62 Reversing lower roller. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0030] Example 1:

[0031] like Figure 1As shown, an anti-roll-up device for an automatic sewing machine includes a feeding plane 1 on which a sheet material 2 to be sewn is conveyed. A sewing machine head 3 is provided on the side of the feeding plane 1. An elastic anti-roll-up plate 4 is provided at one end of the feeding plane near the sewing machine head 3. The elastic anti-roll-up plate 4 can abut against the sheet material 2 to be sewn and presses the sheet material 2 to be sewn onto the feeding plane 1.

[0032] A conveyor belt is installed on the feeding plane. The sheet material 2 to be assembled placed on the feeding plane will move along with the feeding plane during the sewing process, thus mimicking the feeding steps in the manual processing process. The sewing machine head 3 sews the sheet material 2 that is conveyed. An elastic anti-roll plate 4 is set at one end of the sewing machine head 3 along the conveying direction and abuts against the sheet material 2, so that the sheet material 2 can be squeezed and adhered to the feeding plane 1. This generates a certain relative reverse pulling force on the moving sheet material 2, making the surface of the sheet material 2 taut, thereby reducing the pulling effect of the sewing machine head 3 on the sheet material 2. At the same time, the sheet material 2 is squeezed between the elastic anti-roll plate and the feeding plane 1 before entering the sewing area, eliminating the deformation gap of the sheet material 2 and ensuring the flatness of the sheet material 2.

[0033] like Figure 2 As shown, the elastic anti-roll plate 4 includes a base plate 41, an anti-roll pressure plate 42 rotatably connected to the base plate 41, the anti-roll pressure plate 42 includes an adhesive plate 43, the adhesive plate 43 abuts against the sheet material 2 to be assembled; a restoring component is provided between the anti-roll pressure plate 42 and the base plate 41; an mounting plate 45 is connected to the base plate 41, a pushing component 46 is connected to the mounting plate 45, and the pushing component 46 abuts against the anti-roll pressure plate 42.

[0034] The rotational connection between the base plate 41 and the anti-roll plate 42 increases the flexibility of the elastic anti-roll plate 4. When placing the sheet material 2 to be assembled, the elastic anti-roll plate 4 can be rotated for easy placement. The restoring component is set between the anti-roll plate and the base plate 41 so that the anti-roll plate 42 can be restored to its original position after rotation. In this embodiment, the restoring component is a torsion spring. When placing the sheet material 2 to be assembled, the pushing component 46 pushes the anti-roll plate 42 to move. The anti-roll plate 42 rotates around the pivot on the base plate 41 and separates from the conveying plane. After the sheet material 2 to be assembled is placed on it, the pushing component 46 retracts, and the anti-roll plate 42 presses down on the sheet material 2 under the action of the resetting component.

[0035] like Figure 2 As shown, the anti-rolling pressure plate 42 includes a bonding plate 43, and a baffle 411 is provided on the side of the base plate 41 near the bonding plate 43; a relief groove 412 is provided on the base plate 41, and the baffle 411 is provided on both sides of the relief groove 412 and is integrally formed with the base plate 41.

[0036] During the sewing process, the sewing machine is generally an overlock sewing machine, which performs quantitative cutting on the edges of the sheet material 2 to be sewn. The baffle 411 limits the movement of the edges of the sheet material 2 during operation. An adjustment hole is provided on the base plate 41, which controls the lateral distance between the base plate 41 and the sewing head, thereby keeping the cutting size of the overlock sewing machine within the expected range and preventing excessive cutting. Simultaneously, a correction mechanism is provided on the side of the baffle 411 away from the sewing machine to control the edge of the sheet material in real time, preventing the edge of the sheet material from constantly moving towards the baffle 411, which would lead to excessive cutting. The baffle 411 works in conjunction with the correction mechanism to provide secondary protection. A clearance groove 412 is provided on the base plate 41 so that the anti-rolling pressing sheet 42 will not be interfered with by the base plate 41 during rotation. The clearance groove 412 is generated by cutting during the manufacturing process of the base plate 41, and the baffle 411 is formed on both sides of the clearance groove 412 by stamping deformation, which reduces the processing cost. The baffle 411 on both sides of the clearance groove 412 can shield and protect the two sides of the sheet material 2 to be assembled pressed on the bonding plate 43, so as to avoid excessive offset of the sheet material 2 to be assembled, which would cause jamming between the sheet material 2 and the sewing machine during the sewing process.

[0037] The assembly and operation process of the anti-roll-up device of the automatic sewing machine in this embodiment is as follows: In this embodiment, the sheet material 2 to be sewn includes an upper sheet material 21 and a lower sheet material 22. First, the upper sheet material 21 and the lower sheet material 22 are stacked under the presser foot of the sewing machine. At this time, the pusher 46 pushes the anti-roll-up pressure plate 42 downward, so that the anti-roll-up pressure plate 42 is lifted upward, and the sheet material 2 to be sewn is placed under the anti-roll-up pressure plate 42. The pusher 46 retracts, and the anti-roll-up pressure plate 42 returns to its original position under the action of the torsion spring, pressing down the sheet material 2 to be sewn. Then, the sheet material 2 to be sewn begins to be conveyed under the action of the feeding plane 1. The sheet material 2 to be sewn can be conveyed when passing through the anti-roll-up pressure plate 42. The baffle 411 flattens and removes wrinkles while also providing some tension to the sheet material 2 to prevent surface deformation due to stitching during sewing. During the movement of the sheet material 2, the baffle 411 continuously protects its edges to prevent excessive offset. Simultaneously, a correction device performs real-time correction of the sheet material 2 during movement, preventing excessive edge offset from accumulating on the baffle 411. The anti-rolling pressure plate 42 and the baffle 411 ensure the surface flatness of the sheet material 2 and protect and control the edge offset, thus improving sewing quality.

[0038] Example 2:

[0039] like Figure 3As shown, unlike Embodiment 1, the bonding plate 43 in this embodiment has a flattening bevel 431 on the side away from the sewing machine head 3. During the movement of the sheet material 2 to be assembled, the folds generated on the sheet material 2 will be squeezed and overlapped when they enter between the bonding plate 43 and the feeding plane 1. After being pressed by the bonding plate 43, the folds will be firmly fixed and not easy to spring back, which has a significant impact on the flatness of the subsequent product. The setting direction of the flattening bevel is neither perpendicular to nor coincident with the movement direction of the sheet material 2 to be assembled. When the folds move to the flattening bevel 431, they can be gradually flattened. The flattening bevel 431 is set on the side close to the edge of the sheet material 2 to be assembled that needs to be sewn, ensuring the flatness of the sewing path.

[0040] Example 3:

[0041] like Figure 4 As shown, unlike Embodiment 1, in this embodiment, the elastic anti-roll plate 4 is provided with a separation plate 5 on the side away from the sewing machine head 3. The sheet material 2 to be assembled includes an upper sheet 21 and a lower sheet 22, and the separation plate 5 is located between the upper sheet 21 and the lower sheet 22. The separation plate 5 is located on the side of the elastic anti-roll plate 4 away from the sewing machine head 3. During the sewing process, the sheet material 2 to be assembled is generally set as two pieces, divided into an upper sheet 21 and a lower sheet 22. Before entering the elastic anti-roll plate 4, the upper sheet 21 and the lower sheet 22 are temporarily separated by the separation plate 5. The two ends of the sheet material 2 to be assembled are provided with fixing devices to fix and transport the entire sheet material 2. Therefore, the separation plate 5 will cause the upper sheet 21 and the lower sheet 22 to be separated. The upward and downward protrusions are generated. Before the sheet material 2 is conveyed to the separation plate 5, the wrinkles between the two sheets will affect each other and overlap. When it reaches the edge of the separation plate 5, the upper sheet material 21 shifts upward and the lower sheet material 22 shifts downward. The edge of the separation plate 5 will first smooth out the wrinkles and curled edges. The edge of the separation plate 5 near the elastic anti-roll plate 4 will smooth out the sheet material 2 in the second step, so as to maximize the flatness of the sheet material 2 entering the bonding plate 43.

[0042] The separating plate 5 is provided with a damping surface, and both the upper sheet 21 and the lower sheet 22 abut against the damping surface. The damping surface on the surface of the separating plate 5 increases the adsorption and pulling force of the separating plate 5 on the sheet 2 to be joined, so that the tension between the separating plate 5 and the sewing machine head 3 is better, which helps to reduce the formation of wrinkles.

[0043] Example 4:

[0044] like Figure 5As shown, unlike Embodiment 3, the separation plate 5 in this embodiment is provided with a reversing upper roller 61 and a reversing lower roller 62. The reversing upper roller 61 contacts the upper sheet 21 and the reversing lower roller 62 contacts the lower sheet 22. The reversing upper roller 61 and the reversing lower roller 62 rotate in opposite directions. The reversing upper roller 61 is located between the upper sheet 21 and the separation plate 5, and the reversing lower roller 62 is located between the lower sheet 22 and the separation plate 5. By rotating in opposite directions between the upper and lower reversing rollers 61 and 62, a pulling force opposite to the direction of movement can be applied to the sheet material 2 when it enters the separating plate 5. At the same time, the upper and lower reversing rollers 61 and 62 support the sheet material 2 along the vertical direction of the separating plate 5, making the support amplitude of the sheet material 2 larger and the tension of the sheet material 2 better. Meanwhile, the rolling upper and lower reversing rollers 61 and 62 have a certain ability to remove wrinkles. Preferably, flattening threads are provided on the roller surface to make the flattening and wrinkle removal effect better. When setting the upper and lower reversing rollers 61 and 62, the sheet material 2 to be assembled needs to be able to contact the two ends of the separating plate 5 and the upper and lower reversing rollers 61 and 62 at the same time to ensure the wrinkle removal and anti-rolling effect of the separating plate 5.

[0045] Example 5:

[0046] like Figure 6 As shown, unlike Example 4, in this example, the sheet material 2 to be assembled is placed between the upper reversing roller 61, the lower reversing roller 62, and the separating plate 5. The sheet material 2 to be assembled is in contact with both the surface of the separating plate 5 and the upper reversing roller 61 or the lower reversing roller 62. Both sides of the sheet material 2 to be assembled are flattened and wrinkle-removed, resulting in a larger wrinkle-removed area. The surface flatness of the sheet material 2 to be assembled is better when it is conveyed to the anti-rolling pressing plate 42. At the same time, since the sheet material 2 to be assembled is placed between the two, it can achieve a clamping and stabilizing effect. Therefore, the contact degree between the sheet material 2 to be assembled and the separating plate 5, the upper reversing roller 61, and the lower reversing roller 62 is higher, the wrinkle removal effect is better, and the conveying is more stable.

[0047] In addition to the above embodiments, within the scope disclosed in the claims and specification of this invention, the technical features of this invention can be reselected and combined to form new embodiments. These can be achieved by those skilled in the art without creative effort. Therefore, these embodiments not described in detail in this invention should also be regarded as specific embodiments of this invention and within the protection scope of this invention.

Claims

1. An anti-rolling device for an automatic sewing machine, characterized in that, The device includes a feeding plane on which sheets to be assembled are fed. A sewing machine head is located on the side of the feeding plane. An elastic anti-roll plate is located near the sewing machine head on the feeding plane. The elastic anti-roll plate can withstand the sheets to be assembled and presses the sheets to be assembled onto the feeding plane. A separation plate is located on the side of the elastic anti-roll plate away from the sewing machine head. The sheets to be assembled include an upper sheet and a lower sheet. The separation plate is located between the upper sheet and the lower sheet. A reversing upper roller and a reversing lower roller are located on the separation plate. The reversing upper roller contacts the upper sheet, and the reversing lower roller contacts the lower sheet. The reversing upper roller and the reversing lower roller rotate in opposite directions.

2. The anti-rolling device for an automatic seam sewing machine according to claim 1, characterized in that, The elastic anti-roll plate includes a base plate, on which an anti-roll pressure plate is rotatably connected. The anti-roll pressure plate includes an adhesive plate, which abuts against the sheet material to be assembled.

3. The anti-rolling device for an automatic seam sewing machine according to claim 2, characterized in that, A recovery element is provided between the anti-rolling pressure plate and the base plate.

4. The anti-rolling device for an automatic seam sewing machine according to claim 2, characterized in that, A mounting plate is connected to the base plate, and a pushing member is connected to the mounting plate. The pushing member abuts against the anti-rolling pressure plate.

5. The anti-rolling device for an automatic seam sewing machine according to claim 2, characterized in that, The bonding plate has a flattened bevel on the side away from the sewing machine head.

6. The anti-rolling device for an automatic seam sewing machine according to claim 2, characterized in that, The anti-rolling pressure plate includes a bonding plate, and a baffle is provided on the side of the base plate near the bonding plate.

7. The anti-rolling device for an automatic seam sewing machine according to claim 6, characterized in that, The base plate is provided with a clearance groove, and the baffle is provided on both sides of the clearance groove and is integrally formed with the base plate.

8. The anti-rolling device for an automatic seam sewing machine according to claim 1, characterized in that, The separation plate is provided with a damping surface, and both the upper sheet and the lower sheet abut against the damping surface.

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