Cloth cutting adjusting mechanism of overedger

Abstract

The utility model belongs to the technical field of sewing equipment, and particularly relates to a cloth cutting adjusting mechanism of an overedger, which comprises a machine shell, a cloth cutting adjusting mechanism and a cloth cutting adjusting mechanism, the knife rest is arranged in the machine shell and is positioned below the needle plate; the fixed cutter body is arranged at the top end of the cutter rest; the cutter body driving piece is arranged on the cutter rest; the movable cutter body is arranged on the cutter body driving piece; wherein the cutter body driving piece can drive the movable cutter body to move up and down in a reciprocating mode, the movable cutter body and the fixed cutter body can be matched with each other to cut materials, and compared with the prior art, the working efficiency and the cutting effect are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewing equipment, in particular to a cloth cutting adjustment mechanism for an overlock sewing machine. Background Art

[0002] Overlock machines are also called edge machines, edge machines, and bone machines, and are generally divided into three-line, four-line, and five-line machines. The main function is generally to prevent the seams of clothing from pilling. Overlock machines can not only be used for edge binding, but also for sewing T-shirts, sportswear, underwear, knitwear and other fabrics. Overlock machines can cut and sew at the same time, and the stitches are like mesh, and are also suitable for elastic fabrics. For example, a overlock machine disclosed in the patent with application number CN201811637139.1 includes a housing, a needle plate, a lower knife and a lower knife mounting mechanism arranged on the housing; an organic needle hole and a notch are provided on the needle plate, and the blade of the lower knife is arranged in the notch, and the lower knife mounting mechanism can adjust the position of the blade of the lower knife in the notch; the overlock machine also includes a baffle plate for resisting the side edge to be cut on the fabric; wherein the baffle plate can be adjusted in position along a feeding direction perpendicular to the fabric on the needle plate;

[0003] During use of this existing overlock sewing machine, the material is generally cut by the cooperation of an upper knife located above the feeding mechanism and a lower knife located below the feeding mechanism. The position of the upper knife at the top is easy to affect the feeding process, reducing work efficiency. At the same time, when the overlock sewing machine's cutter is in use, when different stitches require different widths of fabric, due to the different materials of the fabric, the fabric cutting width cannot reach the required state when the overlock sewing machine's cutter is in use, and the actual application effect is not ideal, which reduces the practicability of the overlock sewing machine and the cutting effect of the material, so it is necessary to make improvements. Utility Model Content

[0004] The purpose of the utility model is to provide a cloth cutting adjustment mechanism for an overlock sewing machine in order to improve the working efficiency, practicality and material cutting effect of the overlock sewing machine in view of the above-mentioned existing technical problems.

[0005] In view of this, the utility model provides a cloth cutting adjustment mechanism for an overlock sewing machine, comprising:

[0006] A casing, wherein a needle plate is provided on the casing;

[0007] Also includes:

[0008] A knife holder, which is arranged in the housing and below the needle plate;

[0009] A fixed knife body, wherein the fixed knife body is arranged on the top of the knife holder;

[0010] A knife body driving member, wherein the knife body driving member is arranged on the knife holder;

[0011] A movable knife body, wherein the movable knife body is arranged on a knife body driving member;

[0012] The knife body driving member can drive the movable knife body to move up and down reciprocatingly, and the movable knife body and the fixed knife body can cooperate with each other to cut the material.

[0013] In the present technical solution, during the operation of the overlock sewing machine, the material moves along the needle plate on the casing and passes through the fixed knife body. The operation of the knife body driving member drives the movable knife body to move up and down. During the movement of the movable knife body, it cooperates with the fixed knife body to cut the passing material. By arranging the knife holder below the needle plate and driving the movable knife body to move through the knife body driving member, the movable knife body and the fixed knife body are installed together on the lower side of the needle plate, thereby preventing the material from being affected during the feeding process and improving the work efficiency.

[0014] In the above technical solution, further, the blade driving member also includes:

[0015] A rocker arm, wherein the rocker arm is movably arranged in the casing via a fixed shaft;

[0016] A fixed shell, wherein the fixed shell is arranged on the tool holder;

[0017] A reciprocating rod, the reciprocating rod being movably arranged on the fixed shell;

[0018] A knife seat, the knife seat is arranged at the top end of the reciprocating rod;

[0019] Among them, the fixed shaft is located in the middle of the rocker arm, the bottom end of the reciprocating rod is movably connected to one end of the rocker arm, the reciprocating rod can reciprocate up and down under the drive of the rocker arm, and the movable knife body is arranged on the knife seat.

[0020] In the above technical solution, further, the tool holder also includes:

[0021] A connecting shaft, the connecting shaft is movably arranged in the housing, and a first spring is sleeved on the connecting shaft;

[0022] An adjusting bolt, wherein the adjusting bolt is arranged on the tool holder;

[0023] The inner end of the adjusting bolt is movably connected to the housing in the circumferential direction of the adjusting bolt and fixedly connected in the axial direction, and the adjusting bolt is threadedly connected to the tool holder.

[0024] In the above technical solution, further, the tool holder also includes:

[0025] A rotating shaft, the rotating shaft is arranged on the knife seat, and a compression spring is arranged on the rotating shaft;

[0026] Wherein, the movable knife body is connected to the knife seat through a rotating shaft, and a pull button is arranged at the outer end of the rotating shaft.

[0027] In the above technical solution, further, the movable cutter body is provided with two cutter heads, and the two cutter heads are symmetrically distributed.

[0028] The beneficial effects of the utility model are:

[0029] 1. By arranging the knife holder under the needle plate and driving the movable knife body through the knife body driving member, the movable knife body and the fixed knife body are installed together on the lower side of the needle plate to prevent the material from being affected during the feeding process, thereby improving the work efficiency;

[0030] 2. The knife holder can be moved as a whole by adjusting the bolts, thereby adjusting the position of the moving knife body and the fixed knife body, and adjusting the cutting width, so that the cutting width of the material reaches the required state, improving the practicality of the overlock sewing machine and the cutting effect of the material;

[0031] 3. The movable knife body can be effectively folded up by the setting of the rotating shaft and the pull button, so as to protect the movable knife body when cutting is not needed, and at the same time prevent the movable knife body from affecting the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0033] Figure 1 It is a schematic structural diagram of a specific implementation method of the utility model.

[0034] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model.

[0035] Figure 3 It is a front view structural schematic diagram of the utility model.

[0036] Figure 4 It is a schematic diagram of the rear view structure of the utility model.

[0037] Figure 5 It is a schematic diagram of the structure of the utility model in a top view.

[0038] The symbols in the figure are:

[0039] 1. Tool holder; 2. Fixed tool body; 3. Tool body driving part; 30. Rocker arm; 31. Fixed shaft; 32. Fixed shell; 33. Reciprocating rod; 34. Tool holder; 4. Moving tool body; 5. Connecting shaft; 6. First spring; 7. Adjusting bolt; 8. Rotating shaft; 9. Compression spring; 10. Tool head; 11. Pull button. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0041] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0042] Embodiment 1:

[0043] The embodiment of the present application provides a cloth cutting adjustment mechanism for an overlock sewing machine, comprising: a casing, on which a needle plate is arranged;

[0044] The machine also includes: a knife holder 1, which is arranged in the housing and below the needle plate; a fixed knife body 2, which is arranged at the top of the knife holder 1; a knife body driving member 3, which is arranged on the knife holder 1; and a movable knife body 4, which is arranged on the knife body driving member 3.

[0045] Among them, the knife body driving member 3 can drive the movable knife body 4 to move up and down, and the movable knife body 4 and the fixed knife body 2 can cooperate with each other to cut the material.

[0046] A conventional overlock sewing machine driving mechanism is arranged in the casing, and the knife body driving member 3 is drivingly connected with the driving mechanism so as to drive the movable knife body 4 to move up and down reciprocatingly.

[0047] In this embodiment, during the operation of the overlock sewing machine, the material moves along the needle plate on the casing and passes through the fixed knife body 2. The knife body driving member 3 drives the movable knife body 4 to move up and down. During the movement of the movable knife body 4, it cooperates with the fixed knife body 2 to cut the passing material. By arranging the knife holder 1 below the needle plate and driving the movable knife body 4 to move through the knife body driving member 3, the movable knife body 4 and the fixed knife body 2 are installed together on the lower side of the needle plate, thereby preventing the material from being affected during the feeding process and improving the working efficiency.

[0048] Embodiment 2:

[0049] The present embodiment provides a cloth cutting adjustment mechanism for an overlock sewing machine, which, in addition to the technical solutions of the above embodiments, also has the following technical features: the knife body driving member 3 also includes: a rocker arm 30, which is movably arranged in the machine housing through a fixed shaft 31; a fixed shell 32, which is arranged on the knife holder 1; a reciprocating rod 33, which is movably arranged on the fixed shell 32; a knife seat 34, which is arranged on the top of the reciprocating rod 33;

[0050] Among them, the fixed shaft 31 is located in the middle of the rocker arm 30, the bottom end of the reciprocating rod 33 is movably connected to one end of the rocker arm 30, the reciprocating rod 33 can reciprocate up and down driven by the rocker arm 30, and the movable knife body 4 is set on the knife seat 34.

[0051] The fixed shaft 31 is installed in the casing, a connecting hole is provided in the middle of the rocker arm 30, the outer end of the fixed shaft 31 passes through the connecting hole, an annular groove is provided at the outer end of the fixed shaft 31, a notched annular clamping plate is clamped on the annular groove, a limiting ring section is also provided on the fixed shaft 31, the middle part of the rocker arm 30 is located between the limiting ring section and the notched annular clamping plate, the rocker arm 30 can reciprocate with the fixed shaft 31 as the rotating shaft, one end of the rocker arm 30 is connected to the driving mechanism of the overlock sewing machine, the other end of the rocker arm 30 is installed with a transmission shaft, and a strip-shaped connecting hole is provided at the bottom end of the reciprocating rod 33 The outer end of the transmission shaft passes through the strip connecting hole and can move in the strip connecting hole. The outer end of the transmission shaft is also provided with an annular groove, and a notched annular clamping plate is provided on the annular groove, so that the transmission shaft and the reciprocating rod 33 are fixed in the axial direction. The fixed shell 32 is fixedly installed on the tool holder 1 by bolts. The fixed shell 32 has a cavity for the reciprocating rod 33 to pass through. The reciprocating rod 33 can also be provided with a strip guide hole. A guide screw that cooperates with the strip guide hole is installed on the fixed shell 32. The guide screw passes through the fixed shell 32 and the strip guide hole and is connected to the tool holder 1.

[0052] In this embodiment, during the operation of the overlock sewing machine, the rocker arm 30 swings back and forth, thereby driving the reciprocating rod 33 to move back and forth up and down, and the movable knife body 4 located on the knife seat 34 moves with the up and down reciprocating movement of the reciprocating rod 33, thereby cooperating with the fixed knife body 2 to cut the passing material. By arranging the knife holder 1 below the needle plate and driving the movable knife body 4 to move through the knife body driving member 3, the movable knife body 4 and the fixed knife body 2 are installed together on the lower side of the needle plate, thereby preventing the material from being affected during the feeding process, thereby improving the working efficiency.

[0053] Embodiment 3:

[0054] This embodiment provides a cloth cutting adjustment mechanism for an overlock sewing machine, which, in addition to the technical solutions of the above embodiments, also has the following technical features: a tool holder 1 further comprises: a connecting shaft 5, which is movably arranged in the housing, and a first spring 6 is sleeved on the connecting shaft 5; an adjusting bolt 7, which is arranged on the tool holder 1;

[0055] The inner end of the adjusting bolt 7 is movably connected to the housing in the circumferential direction of the adjusting bolt 7 and is fixedly connected in the axial direction. The adjusting bolt 7 is threadedly connected to the tool holder 1 .

[0056] The transmission shaft is movably connected to one end of the rocker arm 30 in the axial direction of the transmission shaft. A spring is sleeved on the transmission shaft, and the spring is located between the reciprocating rod 33 and the rocker arm 30. The connecting shaft 5 is connected to the casing in a conventional manner. An annular groove is also provided on the connecting shaft 5, and a notched annular clamping plate is clamped on the annular groove. The first spring 6 is located on the side of the notched annular clamping plate close to the tool holder 1, and the two ends of the first spring 6 are respectively abutted against the notched annular clamping plate and the casing.

[0057] In this embodiment, when the cutting width needs to be adjusted, the adjusting bolt 7 is rotated, and the adjusting bolt 7 rotates to drive the tool holder 1 threadedly connected thereto to move as a whole, and the movable knife body 4 and the fixed knife body 2 installed on the tool holder 1 move accordingly, thereby adjusting the positions of the movable knife body 4 and the fixed knife body 2, and adjusting the cutting width, so that the cutting width of the material reaches the required state, thereby improving the practicability of the overlock sewing machine and the cutting effect of the material.

[0058] Embodiment 4:

[0059] This embodiment provides a cloth cutting adjustment mechanism for an overlock sewing machine, which, in addition to the technical solutions of the above embodiments, also has the following technical features: the knife seat 34 further includes: a rotating shaft 8, the rotating shaft 8 is arranged on the knife seat 34, and a compression spring 9 is arranged on the rotating shaft 8;

[0060] The movable knife body 4 is connected to the knife seat 34 via a rotating shaft 8 , and a pull button 11 is provided at the outer end of the rotating shaft 8 .

[0061] The movable blade body 4 is provided with two blade heads 10, which are symmetrically distributed.

[0062] A hole is provided on the knife seat 34 for the rotating shaft 8 to pass through. The outer end of the rotating shaft 8 passes through the knife seat 34 and the movable knife body 4. The pull button 11 is fixedly installed on the outer end of the rotating shaft 8. The pull button 11 has a knife pressing portion on the side close to the movable knife body 4. The knife pressing portion fixes the movable knife body 4 on the knife seat 34 through the elastic force of the compression spring 9. An annular groove is also provided at the inner end of the rotating shaft 8. A notched annular clamping plate is clamped on the annular groove. One end of the compression spring 9 abuts against the above-mentioned notched annular plate, and the other end abuts against the top end of the reciprocating rod 33.

[0063] In this embodiment, when there is no need to cut the material, the pull button 11 is pulled outward, and the movable knife body 4 is moved out of the knife seat 34 as the pull button 11 is pulled, and then the pull button 11 is turned to retract the movable knife body 4, thereby protecting the movable knife body 4 when cutting is not needed and preventing the movable knife body 4 from affecting the material.

[0064] Since two cutter heads 10 are arranged on the movable cutter body 4, the cutter heads 10 can be switched when necessary in the above-mentioned manner, thereby effectively meeting different cutting requirements and improving the practicability of the overlock sewing machine.

[0065] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the inspiration of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A cloth cutting adjustment mechanism for an overlock sewing machine, comprising: A casing, wherein a needle plate is provided on the casing; It is characterized by further comprising: A knife holder (1), the knife holder (1) being arranged in the housing and located below the needle plate; A fixed knife body (2), wherein the fixed knife body (2) is arranged on the top end of the knife holder (1); A knife body driving component (3), wherein the knife body driving component (3) is arranged on the knife holder (1); A movable knife body (4), wherein the movable knife body (4) is arranged on the knife body driving component (3); The knife body driving member (3) is capable of driving the movable knife body (4) to move reciprocatingly up and down, and the movable knife body (4) and the fixed knife body (2) are capable of cooperating with each other to cut the material.

2. The cloth cutting adjustment mechanism of an overlock sewing machine according to claim 1, characterized in that: The blade driving member (3) further comprises: A rocker arm (30), wherein the rocker arm (30) is movably arranged in the housing via a fixed shaft (31); A fixed shell (32), wherein the fixed shell (32) is arranged on the tool holder (1); a reciprocating rod (33), the reciprocating rod (33) being movably disposed on the fixed shell (32); A knife seat (34), wherein the knife seat (34) is arranged at the top end of the reciprocating rod (33); The fixed shaft (31) is located in the middle of the rocker arm (30), the bottom end of the reciprocating rod (33) is movably connected to one end of the rocker arm (30), the reciprocating rod (33) can reciprocate up and down under the drive of the rocker arm (30), and the movable knife body (4) is arranged on the knife seat (34).

3. The cloth cutting adjustment mechanism of an overlock sewing machine according to claim 2, characterized in that: The tool holder (1) further comprises: A connecting shaft (5), the connecting shaft (5) being movably arranged in the housing, and a first spring (6) being sleeved on the connecting shaft (5); An adjusting bolt (7), wherein the adjusting bolt (7) is arranged on the tool holder (1); The inner end of the adjusting bolt (7) is movably connected to the housing in the circumferential direction of the adjusting bolt (7) and fixedly connected in the axial direction, and the adjusting bolt (7) is threadedly connected to the tool holder (1).

4. The cloth cutting adjustment mechanism of an overlock sewing machine according to claim 3, characterized in that: The knife seat (34) also includes: A rotating shaft (8), the rotating shaft (8) being arranged on the knife seat (34), and a compression spring (9) being arranged on the rotating shaft (8); The movable knife body (4) is connected to the knife seat (34) via a rotating shaft (8), and a pull button (11) is provided at the outer end of the rotating shaft (8).

5. The cloth cutting adjustment mechanism of an overlock sewing machine according to claim 4, characterized in that: The movable blade body (4) is provided with two blade heads (10), and the two blade heads (10) are symmetrically distributed.

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