Sewing assist device of sewing machine

Abstract

The utility model relates to the field of sewing machines, in particular to a sewing assist device of a sewing machine, which comprises a first folder and a second folder, the first folder comprises a top plate, a first arc-shaped plate, a second arc-shaped plate, a guide plate and a bottom plate, one end of the first arc-shaped plate is connected with one end of the bottom plate, and the other end of the first arc-shaped plate is connected with one end of the top plate; one end of the second arc-shaped plate is connected with one end of the top plate, the other end of the second arc-shaped plate is connected with one end of the guide plate, the second pull cylinder comprises a limiting plate and a third arc-shaped plate, one end of the third arc-shaped plate is connected with the guide plate, the other end of the third arc-shaped plate is connected with the limiting plate, and a feeding space is defined by the bottom plate and the guide plate; the top plate and the guide plate define a hemming space, the limiting plate, the third arc-shaped plate and the guide plate define an overturning space, the feeding space, the hemming space and the overturning space are sequentially communicated, and the sewing assist device can improve the hemming flatness.

Description

Technical Field

[0001] The present application relates to the field of sewing machines, and in particular to a sewing aid for sewing machines. Background Art

[0002] A sewing machine is a device that uses one or more sewing threads to form one or more stitches on the sewing material, so that one or more layers of sewing material are interwoven or sewn together. It can sew fabrics such as cotton, linen, wool, and synthetic fibers, and products such as leather, plastic, and paper.

[0003] When producing household items, curling refers to turning the edges of fabrics such as quilts, sheets, and pillowcases inwards and sewing them to form a certain arc or fold, making the edges of the fabrics neat, beautiful, flat and firm. Usually when preparing a quilt, the edges of the quilt need to be processed. Specifically, the edges of the fabric need to be turned inwards to form a curled edge.

[0004] In the related art, when sewing a quilt, a hemming machine is needed to assist in hemming to improve production efficiency; however, the current hemming machine can only fold to form a two-layer hem, that is, the edge of the cloth is hemmed toward one end of the cloth and then sewn, resulting in the edge of the cloth still being able to be observed from the inner surface folded inward after sewing is completed. If the edge of the folded-inward cloth has burrs, the inner surface of the cloth will be more messy, and even longer cloth yarns will gradually loosen from the burrs. Utility Model Content

[0005] In order to improve the flatness of the curled edge, the present application provides a sewing aid for a sewing machine.

[0006] The present application provides a sewing machine sewing aid, which adopts the following technical solution:

[0007] A sewing auxiliary device for a sewing machine, comprising a first pull cylinder and a second pull cylinder, wherein the first pull cylinder comprises a top plate, a first curved plate, a second curved plate, a guide plate and a bottom plate, wherein the top plate, the guide plate and the bottom plate are arranged in sequence from top to bottom, wherein one end of the first curved plate is connected to one end of the bottom plate, the other end of the first curved plate is connected to one end of the top plate, one end of the second curved plate is connected to one end of the top plate away from the first curved plate, the other end of the second curved plate is connected to one end of the guide plate, the bottom plate, the first curved plate, the top plate, the second curved plate and the guide plate are arranged in sequence, and the arc opening direction of the first curved plate is opposite to the arc opening direction of the second curved plate;

[0008] The second pull cylinder includes a limit plate and a third arc plate, one end of the third arc plate is connected to the guide plate, and the other end of the third arc plate is connected to the limit plate, the limit plate is arranged above the guide plate, and the arc opening direction of the third arc plate is opposite to the arc opening direction of the second arc plate;

[0009] The top of the bottom plate and the bottom of the guide plate are arranged to form a feeding space for the cloth to pass through, the bottom of the top plate and the top of the guide plate are arranged to form a curling space for the cloth to pass through, the limiting plate, the third arc plate and the guide plate are arranged to form a turning space for the cloth to pass through, and the feeding space, the curling space and the turning space are connected in sequence.

[0010] By adopting the above technical scheme, the flatness of the curling can be improved, and the cloth can pass through the feeding space and the curling space in sequence, and be embedded in the turning space, so as to achieve the curling effect. After the edge of the cloth is curled, a two-layer cloth structure is formed at the edge, and then the edge of the cloth is turned over and embedded in the middle of the two-layer cloth structure. Specifically, the cloth first enters the curling space through the feeding space, and then is rolled into a certain arc or folds under the action of the first pull cylinder to form a double-layer curled cloth, and then enters the turning space. Under the action of the second pull cylinder, the edge of the cloth is further turned over between the double-layer structure of the curled cloth, so as to achieve the collection of the cloth edge. When the curling is completed, the cloth can be sewn, and the movement trajectory of the cloth and the curling effect can be effectively controlled, thereby improving the edge flatness of the curling, making the curling more neat, beautiful, flat and firm.

[0011] Optionally, the guide plate includes a first guide plate, a fourth curved plate and a second guide plate which are sequentially arranged from top to bottom, one end of the first guide plate is connected to an end of the second curved plate away from the top plate, one end of the fourth curved plate is connected to an end of the first guide plate away from the second curved plate, and the other end of the fourth curved plate is connected to the second guide plate;

[0012] One end of the third arc plate away from the limiting plate is connected to the first guide plate, and the third arc plate, the limiting plate and the first guide plate are surrounded to form the turning space.

[0013] Optionally, the guide plate includes a first guide plate, a fourth curved plate and a second guide plate which are sequentially arranged from top to bottom, one end of the first guide plate is connected to an end of the second curved plate away from the top plate, one end of the fourth curved plate is connected to an end of the first guide plate away from the second curved plate, and the other end of the fourth curved plate is connected to the second guide plate;

[0014] One end of the third arc plate away from the limiting plate is connected to the second guide plate, and the third arc plate, the limiting plate and the second guide plate are surrounded to form the turning space.

[0015] By adopting the above technical scheme, the flipping and curling of the cloth can be realized. The space between the guide plate and the top plate and the bottom plate can guide the cloth to move along the correct path during the curling process, thereby ensuring the curling effect. Specifically, the edge of the cloth passes through the feed space and the discharge space in sequence, and then flips along the limiting plate, so that the edge of the cloth is embedded in the flipping space, that is, the edge of the cloth is curled between the two layers of the curled cloth, which can effectively control the movement trajectory of the cloth and the curling effect, thereby achieving a high-quality curling effect.

[0016] Optionally, the cross-sectional area of ​​the first guide plate is smaller than the cross-sectional area of ​​the second guide plate.

[0017] By adopting the above technical solution, the cross-sectional area of ​​the first guide plate is larger, which can more effectively support the movement of the cloth during curling, prevent the cloth from becoming unstable or uneven during movement, help ensure that the cloth remains stable during curling, and improve the quality and efficiency of the curling process.

[0018] Optionally, the distance between the center of the third arc plate and the center of the second arc plate is smaller than the distance between the center of the third arc plate and the center of the first arc plate.

[0019] By adopting the above technical solution, the edge of the cloth with a smaller area can be rolled between two layers of the rolled cloth, thereby effectively saving the use of cloth.

[0020] Optionally, the guide plate is connected to an extension portion, and one end of the extension portion away from the guide plate is connected to one end of the third arc plate away from the limiting plate.

[0021] By adopting the above technical solution, the extension part can disperse the stress at the connection point between it and the third arc plate, which helps to reduce the load at the connection point and extend the service life of the structure. The extension part can provide good support and connection, making the connection between the guide plate and the third arc plate more secure, which helps to improve the stability of the overall structure and enhance the stability of the curling edge.

[0022] Optionally, the cross-sectional area of ​​the bottom plate is greater than the cross-sectional area of ​​the top plate.

[0023] By adopting the above technical solution, the large area of ​​the base plate can provide a larger supporting area, thereby dispersing the pressure of the sewing aid and reducing the deformation and wear of the sewing aid. At the same time, the large area of ​​the base plate can also provide a larger contact area, thereby improving the stability when using the sewing aid.

[0024] Optionally, a fixing plate is connected to a side of the first arc-shaped plate away from the top plate, and during sewing, the fixing plate is connected to an external sewing machine.

[0025] By adopting the above technical solution, the mechanical structure of the sewing assistant can be made more stable, and the sewing assistant can be conveniently connected to an external sewing machine to achieve stable hemming processing.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. It can improve the flatness of the curling edge, effectively control the movement trajectory of the fabric and the curling effect, thereby improving the flatness of the curling edge, making the curling edge more neat, beautiful, flat and firm;

[0028] 2. The guide plate can guide the fabric to move along the correct path during the hemming process, thereby ensuring the hemming effect;

[0029] 3. The first guide plate has a larger cross-sectional area, which can more effectively support the movement of the cloth during hemming, prevent the cloth from becoming unstable or uneven during movement, help ensure that the cloth remains stable during hemming, and improve the quality and efficiency of the hemming process. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of a sewing aid embodiment 1 of a sewing machine of the present application.

[0031] Figure 2 It is a schematic diagram of the overall structure of a sewing auxiliary device embodiment 1 of a sewing machine of the present application from another angle.

[0032] Figure 3 This is a schematic diagram of the overall structure of Embodiment 1 of a sewing aid for a sewing machine of the present application from another angle.

[0033] Figure 4 It is a schematic diagram of the overall structure of a sewing aid embodiment 2 of a sewing machine of the present application.

[0034] Figure 5 It is a schematic diagram of the overall structure of a sewing auxiliary device embodiment 2 of a sewing machine of the present application from another angle.

[0035] Explanation of the accompanying drawings: 11. Top plate; 12. First curved plate; 131. First guide plate; 132. Fourth curved plate; 133. Second guide plate; 134. Extension portion; 14. Second curved plate; 15. Bottom plate; 21. Limiting plate; 22. Third curved plate; 3. Feeding space; 4. Curling space; 5. Flipping space; 6. Fixed plate. DETAILED DESCRIPTION

[0036] The following is combined with Figure 1-5 This application is described in further detail.

[0037] The embodiment of the present application discloses a sewing aid for a sewing machine.

[0038] Example 1

[0039] Reference Figure 1 , a sewing auxiliary device for a sewing machine, comprising a first pull cylinder, a second pull cylinder and a fixed plate 6, the first pull cylinder comprising a top plate 11, a first curved plate 12, a guide plate, a second curved plate 14 and a bottom plate 15, the guide plate comprising a first guide plate 131, a fourth curved plate 132, a second guide plate 133 and an extension portion 134, the second pull cylinder comprising a limit plate 21 and a third curved plate 22, the top plate 11, the limit plate 21, the first guide plate 131, the second guide plate 133 and the bottom plate 15 are arranged in sequence from the upper surface to the lower surface, one end of the first curved plate 12 is connected to one end of the bottom plate 15, the other end of the first curved plate 12 is connected to one end of the top plate 11, the shape of the cross section of the first curved plate 12 is preferably an arc shape, one end of the second curved plate 14 is connected to one end of the top plate 11 away from the first curved plate 12, the other end of the second curved plate 14 is connected to one end of the first guide plate 131 The second curved plate 14 is preferably connected in a cross-sectional shape of an arc, one end of the first guide plate 131 is connected to an end of the second curved plate 14 away from the top plate 11, one end of the fourth curved plate 132 is connected to an end of the first guide plate 131 away from the second curved plate 14, and the other end of the fourth curved plate 132 is connected to the second guide plate 133. The shape of the fourth curved plate 132 is preferably an arc. Preferably, the bottom plate 15, the first curved plate 12, the top plate 11, the second curved plate 14, the first guide plate 131, the fourth curved plate 132, and the second guide plate 133 are sequentially connected and are all integrally formed. The fixing plate 6 is connected to the side of the first curved plate 12 away from the top plate 11 and the bottom plate 15. When sewing, the end of the fixing plate 6 away from the first curved plate 12 is connected to an external sewing machine. Preferably, the outer edges of the top plate 11 and the bottom plate 15 are both provided with chamfers.

[0040] Furthermore, the extension portion 134 is connected to the second guide plate 133, and the shape of the cross-section of the third arc plate 22 is preferably an arc shape. One end of the third arc plate 22 is connected to the end of the extension portion 134 away from the second guide plate 133, and the other end of the third arc plate 22 is connected to the limiting plate 21, and the limiting plate 21 extends toward the side close to the second arc plate 14. Preferably, the arc opening direction of the third arc plate 22, the arc opening direction of the first arc plate 12 and the arc opening direction of the fourth arc plate 132 are all the same, and are facing away from the fixed plate 6, the arc opening direction of the second arc plate 14 is opposite to the arc opening direction of the third arc plate 22, and the arc opening direction of the second arc plate 14 is facing the direction close to the fixed block.

[0041] Preferably, the top plate 11, the limiting plate 21, the first guide plate 131, the second guide plate 133, and the bottom plate 15 are all arranged parallel to each other, and the limiting plate 21 is arranged above the first guide plate 131. Specifically, the horizontal plane where the lowest point of the limiting plate 21 is located is higher than the horizontal plane where the highest point of the first guide plate 131 is located, and the distance between the horizontal plane where the highest point of the third curved plate 22 is located and the horizontal plane where the lowest point of the third curved plate 22 is located is greater than the distance between the first guide plate 131 and the second guide plate 133.

[0042] Reference Figure 1 and Figure 2 The top of the bottom plate 15 and the bottom of the second guide plate 133 are arranged to form a feeding space 3 for the cloth to pass through, the bottom of the top plate 11 and the top of the first guide plate 131 are arranged to form a curling space 4 for the cloth to pass through, the limiting plate 21, the third arc-shaped plate 22, the extension portion 134 and the second guide plate 133 are arranged to form a turning space 5 for the cloth to pass through, the feeding space 3, the curling space 4 and the turning space 5 are connected in sequence, preferably, the volume of the curling space 4 is larger than the volume of the turning space 5, when curling, the cloth passes through the feeding space 3 and the curling space 4 in sequence, and is embedded in the turning space 5.

[0043] Reference Figure 1 and Figure 3 , the cross-sectional area of ​​the first guide plate 131 is smaller than the cross-sectional area of ​​the second guide plate 133, the cross-sectional area of ​​the bottom plate 15 is larger than the cross-sectional area of ​​the top plate 11, preferably, the cross-sectional area of ​​the limiting plate 21 is smaller than the cross-sectional area of ​​the first guide plate 131 and the cross-sectional area of ​​the second guide plate 133, the distance between the center of the third arc plate 22 and the center of the second arc plate 14 is smaller than the distance between the center of the third arc plate 22 and the center of the first arc plate 12, preferably, the distance between the two side edges of one end surface where the limiting plate 21 is connected to the third arc plate 22 is the width of the limiting plate 21, the distance between the two side edges of one end surface where the top plate 11 is connected to the first arc plate 12 is the width of the top plate 11, and the width of the limiting plate 21 is smaller than the width of the top plate 11.

[0044] The implementation principle of Example 1 is as follows: when manufacturing the sewing aid, the bottom plate 15, the first curved plate 12, the top plate 11, the second curved plate 14, the first guide plate 131, the fourth curved plate 132, and the second guide plate 133 are integrally formed and arranged in sequence, one end of the third curved plate 22 is connected to the end of the extension portion 134 away from the second guide plate 133, the other end of the third curved plate 22 is connected to the limit plate 21, and then the outer edges of the top plate 11 and the bottom plate 15 are chamfered.

[0045] When the sewing auxiliary device is used for hemming, the cloth is passed through the feeding space 3 and the hemming space 4 in sequence and embedded in the turning space 5. After the hemming is completed, the fixing block is connected to the sewing machine and the cloth is sewn.

[0046] Example 2

[0047] Reference Figure 4 and Figure 5 The difference between this embodiment and embodiment 1 is that the extension portion 134 is connected to the first guide plate 131, one end of the third curved plate 22 is connected to the end of the extension portion 134 away from the first guide plate 131, and the other end of the third curved plate 22 is connected to the limiting plate 21. The third curved plate 22, the limiting plate 21, the extension portion 134 and the first guide plate 131 form a turning space 5. Preferably, the distance between the horizontal plane where the highest point of the third curved plate 22 is located and the horizontal plane where the lowest point of the third curved plate 22 is located is smaller than the distance between the horizontal plane where the highest point of the first guide plate 131 is located and the horizontal plane where the lowest point of the top plate 11 is located.

[0048] The implementation principle of Example 2 is different from that of Example 1 in that one end of the third arc plate 22 is connected to one end of the extension portion 134 away from the first guide plate 131 , and the other end of the third arc plate 22 is connected to the limiting plate 21 .

[0049] Other technical features and implementation principles are the same as those in Example 1 and will not be repeated here.

[0050] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A sewing aid for a sewing machine, characterized in that: It comprises a first pull cylinder and a second pull cylinder, wherein the first pull cylinder comprises a top plate (11), a first curved plate (12), a second curved plate (14), a guide plate and a bottom plate (15), wherein the top plate (11), the guide plate and the bottom plate (15) are sequentially arranged from top to bottom, wherein one end of the first curved plate (12) is connected to one end of the bottom plate (15), the other end of the first curved plate (12) is connected to one end of the top plate (11), one end of the second curved plate (14) is connected to one end of the top plate (11) away from the first curved plate (12), the other end of the second curved plate (14) is connected to one end of the guide plate, the bottom plate (15), the first curved plate (12), the top plate (11), the second curved plate (14) and the guide plate are sequentially arranged, and the arc opening direction of the first curved plate (12) is opposite to the arc opening direction of the second curved plate (14); The second pull cylinder comprises a limit plate (21) and a third curved plate (22), one end of the third curved plate (22) is connected to the guide plate, and the other end of the third curved plate (22) is connected to the limit plate (21), the limit plate (21) is arranged above the guide plate, and the arc opening direction of the third curved plate (22) is opposite to the arc opening direction of the second curved plate (14); The top of the bottom plate (15) and the bottom of the guide plate are arranged to form a feeding space (3) for the cloth to pass through, the bottom of the top plate (11) and the top of the guide plate are arranged to form a curling space (4) for the cloth to pass through, the limiting plate (21), the third arc-shaped plate (22) and the guide plate are arranged to form a turning space (5) for the cloth to pass through, and the feeding space (3), the curling space (4) and the turning space (5) are arranged to be connected in sequence.

2. The sewing aid for a sewing machine according to claim 1, characterized in that: The guide plate comprises a first guide plate (131), a fourth curved plate (132) and a second guide plate (133) which are arranged in sequence from top to bottom, one end of the first guide plate (131) is connected to an end of the second curved plate (14) away from the top plate (11), one end of the fourth curved plate (132) is connected to an end of the first guide plate (131) away from the second curved plate (14), and the other end of the fourth curved plate (132) is connected to the second guide plate (133); One end of the third arc plate (22) away from the limiting plate (21) is connected to the first guide plate (131), and the third arc plate (22), the limiting plate (21) and the first guide plate (131) enclose the turning space (5).

3. The sewing aid for a sewing machine according to claim 1, characterized in that: The guide plate comprises a first guide plate (131), a fourth curved plate (132) and a second guide plate (133) which are arranged in sequence from top to bottom, one end of the first guide plate (131) is connected to an end of the second curved plate (14) away from the top plate (11), one end of the fourth curved plate (132) is connected to an end of the first guide plate (131) away from the second curved plate (14), and the other end of the fourth curved plate (132) is connected to the second guide plate (133); One end of the third arc plate (22) away from the limiting plate (21) is connected to the second guide plate (133), and the third arc plate (22), the limiting plate (21) and the second guide plate (133) are surrounded to form the turning space (5).

4. A sewing aid for a sewing machine according to claim 2 or 3, characterized in that: The cross-sectional area of ​​the first guide plate (131) is smaller than the cross-sectional area of ​​the second guide plate (133).

5. The sewing aid for a sewing machine according to claim 2 or 3, characterized in that: The distance between the center of the third arc-shaped plate (22) and the center of the second arc-shaped plate (14) is smaller than the distance between the center of the third arc-shaped plate (22) and the center of the first arc-shaped plate (12).

6. The sewing aid for a sewing machine according to claim 1, characterized in that: The guide plate is connected to an extension portion (134), and one end of the extension portion (134) away from the guide plate is connected to one end of the third arc plate (22) away from the limiting plate (21).

7. The sewing aid for a sewing machine according to claim 1, characterized in that: The cross-sectional area of ​​the bottom plate (15) is greater than the cross-sectional area of ​​the top plate (11).

8. The sewing aid for a sewing machine according to claim 1, characterized in that: A fixing plate (6) is connected to the side of the first arc-shaped plate (12) away from the top plate (11); during sewing, the fixing plate (6) is connected to an external sewing machine.

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