Threading mechanism of overedger

Abstract

The utility model belongs to the technical field of sewing equipment, and particularly relates to a threading mechanism of an overedger, which comprises a casing, a needle bending frame, a thread guiding mechanism and a thread guiding mechanism. The curved needle is arranged on the curved needle frame; the threading seat is arranged on the curved needle frame; the auxiliary threading piece is arranged on the threading seat; wherein the auxiliary threading piece can drive the sewing thread to move towards the inner side of the machine shell and enable the sewing thread to be arranged on the threading base in a penetrating mode, compared with the prior art, a hand does not need to stretch into a narrow space in the machine shell to conduct threading operation, threading operation is effectively facilitated through the auxiliary threading piece, and work efficiency is improved.

Description

Technical Field

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

[0002] Overlock machines are also called edge machines, edge-stitching machines, and bone machines, and are generally divided into three-thread, four-thread, and five-thread 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, the patent with application number CN202321650489.8 discloses a thread-threading lighting device for an overlock machine, including a casing, a thread-threading installation chamber is provided on the casing, a connecting assembly is provided on one side of the thread-threading installation chamber, a main cover plate is provided on the connecting assembly, a sub-cover plate is provided on the main cover plate, a magnet is fixedly provided on the sub-cover plate, and a sensor is also fixedly provided on the casing. When the main cover plate and the sub-cover plate close the thread-threading installation chamber, the magnet and the sensor are positioned relative to each other;

[0003] During the use of this existing overlock sewing machine, when the thread passes through the curved needle, the operation is very limited in a narrow space, the actual application operation effect is not ideal, and the work efficiency is greatly reduced, so it is necessary to make improvements. Utility Model Content

[0004] The purpose of the utility model is to provide a threading mechanism for an overlock sewing machine in order to solve the above-mentioned technical problems, so as to facilitate the threading operation of the overlock sewing machine and effectively improve the working efficiency.

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

[0006] A casing, wherein a curved needle holder is arranged on the casing;

[0007] A curved needle, wherein the curved needle is arranged on a curved needle holder;

[0008] Also includes:

[0009] A threading seat, wherein the threading seat is arranged on the curved needle frame;

[0010] An auxiliary threading piece, which is arranged on the threading seat;

[0011] Wherein, the auxiliary threading member can drive the sewing thread to move toward the inside of the housing and thread the sewing thread onto the threading seat.

[0012] In the present technical scheme, during the use of the overlock sewing machine, the sewing thread is passed through the auxiliary threading piece and the curved needle in sequence, and then the sewing thread is driven to move toward the inside of the casing by the auxiliary threading piece and the sewing thread is passed through the threading seat, thereby completing the complete threading operation. Compared with the prior art, the utility model does not need to extend the hand into the narrow space inside the casing to perform the threading operation. The auxiliary threading piece effectively facilitates the threading operation and improves work efficiency.

[0013] In the above technical solution, further, the auxiliary threading member also includes:

[0014] A threading hook, wherein the threading hook is arranged on the threading seat;

[0015] The threading hook can rotate around the axis to drive the sewing thread to move toward the inside of the housing and thread the sewing thread onto the threading seat.

[0016] In the above technical solution, further, the threading hook also includes:

[0017] A lever, which is arranged at the bottom of the threading hook and extends to the right side of the threading hook;

[0018] A hook body, the hook body is arranged on the top of the threading hook, and the hook body has two hook bodies and is spaced apart in an upper and lower direction;

[0019] The hook body can hook the sewing thread on the threading hook and drive the sewing thread to move toward the inside of the casing as the threading hook rotates, and then the sewing thread is threaded on the threading seat.

[0020] In the above technical solution, further, the auxiliary threading member also includes:

[0021] A rotating shaft, the rotating shaft is arranged on the threading seat, and a torsion spring is arranged on the rotating shaft;

[0022] The threading hook is connected to the threading seat via a rotating shaft, and the threading hook can rotate around the rotating shaft to drive the sewing thread to move toward the inside of the housing and thread the sewing thread on the threading seat, and the torsion spring can drive the threading hook to reset.

[0023] In the above technical solution, further, the threading seat also includes:

[0024] A guide rod is arranged on the inner side of the threading seat, and the guide rod is inclined toward the inner side of the casing.

[0025] In the above technical solution, further, the threading seat also includes:

[0026] A limit stopper is arranged at the bottom of the threading seat and below the threading hook, and the limit stopper can limit the range of movement of the threading hook.

[0027] The beneficial effects of the utility model are:

[0028] 1. The setting of auxiliary threading parts effectively facilitates the threading operation and improves work efficiency;

[0029] 2. Through the setting of the threading hook, the sewing thread can be threaded on the threading seat by simply pushing the threading hook into the housing, which effectively improves the work efficiency;

[0030] 3. The setting of the rotating shaft and the torsion spring can facilitate the effective reset of the threading hook after threading, so as to prevent the threading hook from affecting the feeding of the subsequent sewing thread and facilitate the subsequent threading operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] 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.

[0032] Figure 1 It is a schematic structural diagram of a specific implementation method of the utility model.

[0033] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model.

[0034] Figure 3 It is a schematic diagram of the structure of the utility model in a top view.

[0035] Figure 4 It is a front view structural schematic diagram of the utility model.

[0036] Figure 5 It is a schematic diagram of the rear view structure of the utility model.

[0037] The symbols in the figure are:

[0038] 1. Looper holder; 2. Looper; 3. Threading seat; 4. Auxiliary threading piece; 5. Threading hook; 6. Push rod; 7. Hook body; 8. Rotating shaft; 9. Torsion spring; 10. Guide rod. DETAILED DESCRIPTION

[0039] 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.

[0040] 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.

[0041] Embodiment 1:

[0042] The embodiment of the present application provides a threading mechanism for an overlock sewing machine, comprising: a housing, on which a looper frame 1 is arranged; a looper 2, which is arranged on the looper frame 1;

[0043] It also includes: a threading seat 3, which is arranged on the curved needle frame 1; an auxiliary threading member 4, which is arranged on the threading seat 3;

[0044] The auxiliary threading member 4 can drive the sewing thread to move toward the inside of the housing and thread the sewing thread onto the threading seat 3 .

[0045] The curved needle frame 1 is detachably connected to the casing of the overlock sewing machine, the curved needle 2 is provided with a hole for the sewing thread to pass through and a wire groove for guiding the sewing thread, the threading seat 3 is fixedly mounted on the curved needle frame 1 by screws, and the threading seat 3 is provided with two wire grooves distributed up and down.

[0046] In this embodiment, during use of the overlock sewing machine, the sewing thread is passed through the auxiliary threading piece 4 and the curved needle 2 in sequence, and then the auxiliary threading piece 4 drives the sewing thread to move to the inside of the casing and passes the sewing thread on the threading seat 3, thereby completing the complete threading operation. Compared with the prior art, the utility model does not need to extend the hand into the narrow space inside the casing to perform the threading operation. The auxiliary threading piece 4 effectively facilitates the threading operation and improves the work efficiency.

[0047] Embodiment 2:

[0048] This embodiment provides a threading mechanism for an overlock sewing machine, which, in addition to the technical solutions of the above embodiments, also has the following technical features: the auxiliary threading member 4 further includes: a threading hook 5, which is arranged on the threading seat 3;

[0049] The threading hook 5 can rotate around the axis to drive the sewing thread to move toward the inside of the housing and thread the sewing thread onto the threading seat 3 .

[0050] The threading hook 5 further includes: a lever 6, which is arranged at the bottom of the threading hook 5 and extends to the right side of the threading hook 5; a hook body 7, which is arranged at the top of the threading hook 5, and has two hook bodies 7 that are spaced apart from each other.

[0051] The hook body 7 can hook the sewing thread onto the threading hook 5 and drive the sewing thread to move toward the inside of the housing as the threading hook 5 rotates, and thread the sewing thread onto the threading seat 3 .

[0052] The threading hook 5 includes a straight line segment and an arc segment. The hook body 7 is installed at the end of the arc segment. The arc segment is consistent with the path of the threading hook 5 rotating around the axis.

[0053] In this embodiment, during use of the overlock sewing machine, the sewing thread is passed through the hook body 7 and the curved needle 2 on the threading hook 5 in sequence, and then the lever 6 is toggled, and the lever 6 drives the threading hook 5 to rotate around the axis so that the sewing thread moves toward the inside of the casing and passes the sewing thread on the threading seat 3, thereby completing the complete threading operation. Compared with the prior art, the utility model does not need to extend the hand into the narrow space inside the casing to perform the threading operation. The auxiliary threading member 4 effectively facilitates the threading operation, improves the work efficiency, and the operation method is simple, which further improves the threading efficiency.

[0054] Embodiment 3:

[0055] This embodiment provides a threading mechanism for an overlock sewing machine, which, in addition to the technical solutions of the above embodiments, also has the following technical features: the auxiliary threading member 4 further includes: a rotating shaft 8, which is arranged on the threading seat 3, and a torsion spring 9 is arranged on the rotating shaft 8;

[0056] The threading hook 5 is connected to the threading seat 3 through the rotating shaft 8. The threading hook 5 can rotate around the rotating shaft 8 to drive the sewing thread to move to the inside of the casing and thread the sewing thread on the threading seat 3. The torsion spring 9 can drive the threading hook 5 to reset.

[0057] Moreover, the rotating shaft 8 and the threading hook 5 are fixed in the axial direction of the rotating shaft 8, and a hole that cooperates with the torsion spring 9 is opened on the threading seat 3. One end of the torsion spring 9 can be inserted into the above hole to be fixed, and the torsion spring 9 and the threading hook 5 are matched in a conventional manner.

[0058] In this embodiment, when the lever 6 is moved to rotate the threading hook 5, the torsion spring 9 is stressed and thus twisted to generate elastic force. After the threading hook 5 moves the sewing thread to the inside of the casing and threads the sewing thread on the threading seat 3, the lever 6 is released, and the torsion spring 9 is reset under the action of the elastic force and drives the threading hook 5 to reset, thereby preventing the threading hook 5 from affecting the subsequent feeding of the sewing thread and facilitating the subsequent threading operation.

[0059] Embodiment 4:

[0060] This embodiment provides a threading mechanism for an overlock sewing machine, which, in addition to the technical solutions of the above embodiments, also has the following technical features: the threading seat 3 further includes: a guide rod 10, which is arranged on the inner side of the threading seat 3 and is inclined toward the inner side of the casing;

[0061] The threading hook 5 is provided with an arc-shaped notch corresponding to the position of the guide rod 10 .

[0062] In this embodiment, during the use of the overlock sewing machine, the sewing thread is passed through the hook body 7 and the curved needle 2 on the threading hook 5 in sequence, and then the lever 6 is toggled, and the lever 6 drives the threading hook 5 to rotate around the axis so that the sewing thread moves toward the inside of the casing. When the sewing thread moves to the position of the guide rod 10, as the threading hook 5 continues to move toward the inside of the casing, the sewing thread is blocked by the guide rod 10 and moves along the inclined guide rod 10 toward the end of the guide rod 10. Finally, the sewing thread passes over the guide rod 10 and falls on the threading seat 3 to complete the threading operation. Compared with the prior art, the utility model does not need to put hands into the narrow space inside the casing to perform threading operations. The auxiliary threading member 4 effectively facilitates the threading operation, improves work efficiency, and the operation method is simple, which further improves the threading efficiency.

[0063] 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 guidance 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 threading mechanism for an overlock sewing machine, comprising: A casing, wherein a curved needle holder (1) is arranged on the casing; A curved needle (2), wherein the curved needle (2) is arranged on a curved needle frame (1); It is characterized by further comprising: A threading seat (3), wherein the threading seat (3) is arranged on the curved needle frame (1); An auxiliary threading member (4), wherein the auxiliary threading member (4) is arranged on the threading seat (3); The auxiliary threading member (4) can drive the sewing thread to move toward the inside of the housing and thread the sewing thread onto the threading seat (3).

2. The threading mechanism of an overlock sewing machine according to claim 1, characterized in that: The auxiliary threading member (4) further comprises: A threading hook (5), wherein the threading hook (5) is arranged on the threading seat (3); The threading hook (5) can rotate around an axis to drive the sewing thread to move toward the inside of the housing and thread the sewing thread onto the threading seat (3).

3. The threading mechanism of an overlock sewing machine according to claim 2, characterized in that: The threading hook (5) further comprises: A lever (6), wherein the lever (6) is arranged at the bottom of the threading hook (5) and extends to the right side of the threading hook (5); A hook body (7), the hook body (7) being arranged on the top of the threading hook (5), the hook body (7) having two hook bodies (7) being spaced apart in an upper and lower direction; The hook body (7) can hook the sewing thread onto the threading hook (5) and drive the sewing thread to move toward the inside of the casing as the threading hook (5) rotates, and the sewing thread is threaded onto the threading seat (3).

4. The threading mechanism of an overlock sewing machine according to claim 2, characterized in that: The auxiliary threading member (4) further comprises: A rotating shaft (8), wherein the rotating shaft (8) is arranged on the threading seat (3), and a torsion spring (9) is arranged on the rotating shaft (8); The threading hook (5) is connected to the threading seat (3) via a rotating shaft (8); the threading hook (5) can rotate around the rotating shaft (8) to drive the sewing thread to move toward the inside of the housing and thread the sewing thread onto the threading seat (3); and the torsion spring (9) can drive the threading hook (5) to reset.

5. The threading mechanism of an overlock sewing machine according to claim 4, characterized in that: The threading seat (3) also includes: A guide rod (10), wherein the guide rod (10) is arranged on the inner side of the threading seat (3), and the guide rod (10) is arranged to be inclined toward the inner side of the housing; Wherein, the threading hook (5) is provided with an arc-shaped notch corresponding to the position of the guide rod (10).

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