Material pressing structure and overedger

Abstract

According to the material pressing structure and the overlock machine, the material pressing structure comprises a five-thread presser foot and a material pressing assembly, the five-thread presser foot comprises a small presser foot bottom plate and a front presser foot bottom plate, the front presser foot bottom plate is independently arranged relative to the small presser foot bottom plate, and the front presser foot bottom plate is in transmission connection with the small presser foot bottom plate; the material pressing assembly is in transmission connection with the five-line presser foot, the material pressing assembly can press the five-line presser foot for F, and the pressure F can directly act on the front presser foot bottom plate. When the material pressing structure is applied to the overedger and works, the front presser foot bottom plate has larger force for material pressing and auxiliary feeding, and the material pressing structure is suitable for material pressing and feeding of thick fabric, so that the problems that a presser foot of an existing overedger is difficult to feed materials, sewing becomes dense, the presser foot pushes cloth and the like can be effectively solved.

Description

Technical Field

[0001] The utility model belongs to the technical field related to the presser foot of an overlock sewing machine, and particularly relates to a presser structure and an overlock sewing machine. Background Art

[0002] An overlock sewing machine is mainly used for overlocking and sewing textiles and has a wide application in the sewing field. During the sewing process, the presser foot of the overlock sewing machine mainly presses the fabric to cooperate with the teeth to realize the function of feeding the fabric.

[0003] At present, in the existing overlock sewing machine, the small presser foot bottom plate and the front presser foot bottom plate of the five-wire presser foot have a special separate structure. Moreover, the pressure F of the presser bar spring mainly acts on the small presser foot bottom plate fixed to the presser foot arm, and only the torsion spring on the presser foot presses the front large presser foot bottom plate onto the fabric. In this way, it is very difficult for the overlock sewing machine to sew thicker fabrics. Problems such as the fabric not being able to be inserted, the presser foot not being able to push the fabric when feeding thick materials, resulting in denser starting seams, and the presser foot pushing the fabric are likely to occur. Summary of the Utility Model

[0004] In view of this, it is necessary to provide a presser structure and an overlock sewing machine for solving the above technical problems.

[0005] A presser structure, the presser structure includes:

[0006] A five-wire presser foot, including a small presser foot bottom plate and a front presser foot bottom plate, the front presser foot bottom plate is independently arranged relative to the small presser foot bottom plate, and the front presser foot bottom plate is in transmission connection with the small presser foot bottom plate;

[0007] A presser component, in transmission connection with the five-wire presser foot, and the presser component can generate a pressure F on the five-wire presser foot, and the pressure F directly acts on the front presser foot bottom plate.

[0008] It can be understood that by directly acting the pressure F generated by the presser component on the front presser foot bottom plate, when the presser structure is applied to an overlock sewing machine and works, the front presser foot bottom plate has a greater force for pressing the fabric and assisting in feeding the fabric, and is suitable for pressing and feeding thicker fabrics. In this way, the problems existing in the existing overlock sewing machine, such as difficult presser foot feeding, denser starting seams, and presser foot pushing the fabric, can be effectively solved.

[0009] In one embodiment, the five-wire presser foot further includes a connecting body and a connecting plate, one end of the connecting body is sleeved on the connecting plate and is rotatably connected to the connecting plate, and the other end of the connecting body is in transmission connection with the presser component;

[0010] Wherein, the small presser foot bottom plate and the front presser foot bottom plate are in transmission connection through the connecting plate.

[0011] In one embodiment, the connecting body and the connecting plate are rotatably connected via a connecting shaft;

[0012] Wherein, the pressure direction of the pressure F generated by the pressing assembly is arranged close to the connecting shaft.

[0013] It can be understood that the pressure direction of the pressure F generated by the pressing assembly is arranged closer to the connecting shaft, so as to ensure that the pressure F generated by the pressing assembly can directly act on the front presser foot bottom plate.

[0014] In one embodiment, the five-thread presser foot further includes a torsion spring, and the torsion spring is installed on the connecting body;

[0015] Wherein, the first elastic arm of the torsion spring abuts against the connecting body, and the second elastic arm of the torsion spring abuts against the bottom plate of the small presser foot.

[0016] It can be understood that by utilizing the structural characteristics of the torsion spring, when the pressure F generated by the pressing assembly directly acts on the front presser foot base, the five-line presser foot can also exert force on the small presser foot base through the torsion spring, thereby meeting the requirements of pressing and auxiliary feeding of the small presser foot base.

[0017] In one of the embodiments, one end of the connecting plate is disposed in the small presser foot sole plate and is rotatably connected to the small presser foot sole plate, and the other end of the connecting plate is disposed in the front presser foot sole plate and is rotatably connected to the front presser foot sole plate.

[0018] In one embodiment, the press assembly comprises an elastic member, a press rod and a presser foot arm which are sequentially connected in transmission, and the elastic member can generate a pressure F to the presser foot arm through the press rod;

[0019] Wherein, the presser foot arm is transmission connected with the five-thread presser foot.

[0020] In one embodiment, a transmission shaft is provided on the presser foot arm, and the presser foot arm can be transmission-connected to the five-thread presser foot through the transmission shaft;

[0021] Wherein, along the extension direction of the pressing rod, the projection portion of the pressing rod toward the presser foot arm covers the transmission shaft.

[0022] It can be understood that, through the structural setting of the above-mentioned presser foot arm, it can be ensured that the pressure F generated by the presser assembly can directly act on the front presser foot bottom plate.

[0023] In one embodiment, the pressing assembly further comprises a guide rod, wherein the guide rod is partially inserted into the pressing rod and connected to the pressing rod;

[0024] Wherein, the elastic member is sleeved on the guiding rod and abuts against the pressing rod.

[0025] It can be understood that the guiding rod is used to guide the elastic member, so as to ensure the consistency of the pressure direction when the elastic member applies a pressure F to the pressing rod.

[0026] In one embodiment, the elastic member is configured as a spring.

[0027] This application also claims to protect an overlock sewing machine, including the pressing structure described above.

[0028] Due to the application of the above technical solution, the present utility model has the following advantages compared with the prior art:

[0029] The pressing structure and the overlock sewing machine claimed by this application directly act the pressure F generated by the pressing component on the front presser foot bottom plate. When the pressing structure is applied to the overlock sewing machine and works, the front presser foot bottom plate has a greater force for pressing the material and assisting in feeding the material, and is suitable for pressing and feeding thicker fabrics. In this way, it can effectively solve the problems existing in the prior overlock sewing machine, such as difficult feeding of the presser foot, denser starting stitches, and pushing the fabric by the presser foot. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of this application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0031] Figure 1 It is a schematic structural diagram of the pressing structure provided by an embodiment of this application.

[0032] Figure 2 It is a partial structural diagram of the pressing structure provided by an embodiment of this application.

[0033] Reference numerals: 100, pressing structure; 10, five-thread presser foot; 101, connecting shaft; 102, rotating shaft; 11, small presser foot bottom plate; 12, front presser foot bottom plate; 13, connecting body; 131, shaft position screw; 132, bolt; 14, connecting plate; 15, torsion spring; 151, first elastic arm; 152, second elastic arm; 20, pressing component; 21, elastic member; 211, spring; 22, pressing rod; 23, presser foot arm; 231, transmission shaft; 24, guiding rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0035] It should be noted that when an element is referred to as being "provided on" another element, it can be directly provided on the other element or there may also be an intermediate element. When an element is considered to be "provided on" another element, it can be directly provided on the other element or there may be an intermediate element at the same time. When an element is considered to be "fixed to" another element, it can be directly fixed to the other element or there may be an intermediate element at the same time.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the description of the present utility model are only for the purpose of describing specific embodiments, and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0037] As Figure 1 shown, the pressing structure 100 provided by an embodiment of the present application includes a five-wire presser foot 10 and a pressing component 20. The five-wire presser foot 10 includes a small presser foot bottom plate 11 and a front presser foot bottom plate 12. The front presser foot bottom plate 12 is independently arranged relative to the small presser foot bottom plate 11, and moreover, the front presser foot bottom plate 12 is in transmission connection with the small presser foot bottom plate 11; the pressing component 20 is in transmission connection with the five-wire presser foot 10. The pressing component 20 can generate a pressure F on the five-wire presser foot 10, and moreover, the pressure F can directly act on the front presser foot bottom plate 12. When the pressing structure 100 is applied to an overlock sewing machine (not shown in the figure) and works, the front presser foot bottom plate 12 has a greater force for pressing the material and assisting in feeding the material, and is suitable for pressing and feeding thicker fabrics. In this way, the problems of difficult material feeding of the presser foot, denser starting seams, and pushing the fabric by the presser foot existing in the existing overlock sewing machine can be effectively solved. It should be noted that when the pressing structure 100 is applied to an overlock sewing machine and works, the principle of how the pressing component 20 generates the pressure F on the five-wire presser foot 10 can adopt the conventional method of the existing overlock sewing machine, and will not be elaborated herein.

[0038] As Figure 1 、 Figure 2As shown, the five-wire presser foot 10 further includes a connecting body 13 and a connecting plate 14. One end of the connecting body 13 is sleeved on the connecting plate 14 and rotatably connected to the connecting plate 14. The other end of the connecting body 13 is drivingly connected to the presser component 20. Among them, the small presser foot bottom plate 11 and the front presser foot bottom plate 12 are drivingly connected through the connecting plate 14.

[0039] Preferably, as Figure 2 shown, the connecting body 13 and the connecting plate 14 can be rotatably connected through a connecting shaft 101. Among them, the pressure direction of the pressure F generated by the presser component 20 is arranged close to the connecting shaft 101. This can ensure that the pressure F generated by the presser component 20 can directly act on the front presser foot bottom plate 12. Here, the center line of the connecting shaft 101 can be specifically arranged in the pressure direction of the pressure F.

[0040] As Figure 2 shown, one end of the connecting plate 14 is arranged in the small presser foot bottom plate 11 and rotatably connected to the small presser foot bottom plate 11. The other end of the connecting plate 14 is arranged in the front presser foot bottom plate 12 and rotatably connected to the front presser foot bottom plate 12. This specifically realizes the driving connection between the small presser foot bottom plate 11 and the front presser foot bottom plate 12. Here, the connecting plate 14 and the small presser foot bottom plate 11 and the front presser foot bottom plate 12 can be rotatably connected by a rotating shaft 102 respectively.

[0041] As Figure 1 、 Figure 2 shown, the five-wire presser foot 10 further includes a torsion spring 15. The torsion spring 15 is installed on the connecting body 13. Among them, the first spring arm 151 of the torsion spring 15 abuts against the connecting body 13, and the second spring arm 152 of the torsion spring 15 abuts against the small presser foot bottom plate 11. So that the pressure F generated by the presser component 20 can also realize the acting force on the small presser foot bottom plate 11 through the torsion spring 15. This can meet the use requirements of the small presser foot bottom plate 11 for pressing materials and assisting in feeding materials. Here, the torsion spring 15 can be assembled to the connecting body 13 through an axially positioned screw 131.

[0042] As Figure 1 、 Figure 2 shown, the presser component 20 includes an elastic member 21, a pressure rod 22 and a presser foot arm 23 that are sequentially drivingly connected. The elastic member 21 can generate a pressure F on the presser foot arm 23 through the pressure rod 22. Among them, the presser foot arm 23 is drivingly connected to the five-wire presser foot 10. So that the pressure F generated by the elastic member 21 can be applied to the five-wire presser foot 10 under the transmission of the pressure rod 22 and the presser foot arm 23. It should be noted that when the presser component 20 is applied to an overlock sewing machine, the principle of how to generate the pressure F on the elastic member 21 can adopt the conventional method of the existing overlock sewing machine, and will not be elaborated here.

[0043] As Figure 1 、 Figure 2As shown in the figure, a transmission shaft 231 is provided on the presser foot arm 23, and the presser foot arm 23 can be drivingly connected to the five-wire presser foot 10 through the transmission shaft 231. Here, the transmission shaft 231 passes through the connection body 13 of the five-wire presser foot 10, and then a bolt 132 screwed onto the connection body 13 is used to lock the connection body 13 to the transmission shaft 231.

[0044] Preferably, as Figure 1 , Figure 2 shown in the figure, along the extending direction of the pressure bar 22, the projected part of the pressure bar 22 towards the presser foot arm 23 covers the transmission shaft 231, so that the pressure direction of the pressure F generated by the pressure bar 22 on the presser foot arm 23 is closer to the front presser foot bottom plate 12, and it is ensured that the pressure F generated by the presser component 20 can directly act on the front presser foot bottom plate 12.

[0045] As Figure 1 shown in the figure, the presser component 20 further includes a guide rod 24, and a part of the guide rod 24 is inserted into the pressure bar 22 and connected to the pressure bar 22; wherein, an elastic member 21 is sleeved on the guide rod 24 and abuts against the pressure bar 22. That is to say, the guide rod 24 can guide the elastic member 21, so as to ensure the consistency of the pressure direction when the elastic member 21 applies the pressure F to the pressure bar 22. Here, the elastic member 21 is configured as a spring 211. Of course, in other embodiments, the elastic member 21 can also be configured as a highly elastic rubber sleeve, or other highly elastic fittings, etc.

[0046] In addition, the present application also provides an overlock sewing machine, including the above-mentioned presser structure 100.

[0047] The technical features of the above embodiments can be combined arbitrarily. For the sake of brief description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0048] Those of ordinary skill in the art of this technology should recognize that the above embodiments are only used to illustrate the present invention, rather than to limit the present invention. As long as appropriate changes and variations are made to the above embodiments within the spirit of the present invention, they fall within the scope of protection required by the present invention.

Claims

1. A material pressing structure, characterized in that: The material pressing structure (100) comprises: A five-thread presser foot (10) comprises a small presser foot sole plate (11) and a front presser foot sole plate (12), wherein the front presser foot sole plate (12) is independently arranged relative to the small presser foot sole plate (11), and the front presser foot sole plate (12) is transmission-connected to the small presser foot sole plate (11); The material pressing assembly (20) is in transmission connection with the five-thread presser foot (10); the material pressing assembly (20) can generate pressure F on the five-thread presser foot (10), and the pressure F directly acts on the front presser foot bottom plate (12).

2. The material pressing structure according to claim 1, characterized in that: The five-thread presser foot (10) further comprises a connecting body (13) and a connecting plate (14), one end of the connecting body (13) is sleeved onto the connecting plate (14) and is rotatably connected to the connecting plate (14), and the other end of the connecting body (13) is transmission-connected to the pressing assembly (20); The small presser foot sole plate (11) and the front presser foot sole plate (12) are transmission-connected via the connecting plate (14).

3. The material pressing structure according to claim 2, characterized in that: The connecting body (13) and the connecting plate (14) are rotatably connected via a connecting shaft (101); Wherein, the pressure direction of the pressure F generated by the pressing component (20) is arranged close to the connecting shaft (101).

4. The material pressing structure according to claim 2, characterized in that: The five-thread presser foot (10) further comprises a torsion spring (15), wherein the torsion spring (15) is mounted on the connecting body (13); The first elastic arm (151) of the torsion spring (15) abuts against the connecting body (13), and the second elastic arm (152) of the torsion spring (15) abuts against the small presser foot bottom plate (11).

5. The material pressing structure according to claim 2, characterized in that: One end of the connecting plate (14) is arranged in the small presser foot sole plate (11) and is rotatably connected to the small presser foot sole plate (11), and the other end of the connecting plate (14) is arranged in the front presser foot sole plate (12) and is rotatably connected to the front presser foot sole plate (12).

6. The material pressing structure according to claim 1, characterized in that: The material pressing assembly (20) comprises an elastic member (21), a pressing rod (22) and a pressing foot arm (23) which are sequentially connected in a transmission manner, and the elastic member (21) can generate a pressure F on the pressing foot arm (23) through the pressing rod (22); Wherein, the presser foot arm (23) is transmission-connected with the five-thread presser foot (10).

7. The material pressing structure according to claim 6, characterized in that: The presser foot arm (23) is provided with a transmission shaft (231), and the presser foot arm (23) can be transmission-connected to the five-thread presser foot (10) via the transmission shaft (231); Wherein, along the extension direction of the pressing rod (22), the projection portion of the pressing rod (22) toward the pressing foot arm (23) covers the transmission shaft (231).

8. The material pressing structure according to claim 6, characterized in that: The pressing assembly (20) further comprises a guide rod (24), wherein a portion of the guide rod (24) is inserted into the pressing rod (22) and connected to the pressing rod (22); Wherein, the elastic member (21) is sleeved onto the guide rod (24) and abuts against the pressure rod (22).

9. The material pressing structure according to claim 6, characterized in that: The elastic member (21) is configured as a spring (211).

10. An overlock sewing machine, characterized in that: The present invention comprises the pressing structure (100) according to any one of claims 1 to 9.

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