CN214938339U

CN214938339U - Short thread end cutting device for sewing machine

Info

Publication number: CN214938339U
Application number: CN202120776431.2U
Authority: CN
Inventors: 涂文平
Original assignee: Zhejiang Fuxin Clothing Co ltd
Current assignee: Lishui Xinboge Technology Co ltd
Priority date: 2021-04-15
Filing date: 2021-04-15
Publication date: 2021-11-30
Anticipated expiration: 2031-04-15

Abstract

The utility model discloses a stub cutting device for sewing machine, include fuselage, presser foot, sewing needle and cut off the subassembly, the bottom fixed mounting of fuselage has the presser foot, the bottom of fuselage is provided with the sewing needle, the table of presser foot is quick fixed mounting has the subassembly of cutting off, it includes install bin, driving motor, transfer line, drive wheel, spacing support, runner, connecting rod, installing support, sword groove, tool bit, latch segment and movable block to cut off the subassembly, the bottom fixed mounting of presser foot has the install bin. The utility model discloses a position and structure to commonly used short thread end cutting device improve, make its end of a thread after can effectively shortening the cutting when using, saved the trouble that follow-up manpower carries out the secondary and prunes, saved the cost, through the cutting assembly who sets up, make it can cut off the end of a thread to automatic when using, saved the trouble of manual operation, and its simple structure, easily realize.

Description

Short thread end cutting device for sewing machine

Technical Field

The utility model relates to a sewing machine cut line technical field specifically is a sewing machine is with stub cutting device.

Background

The sorting methods of sewing machines are many, and it is common to distinguish between stitches and uses. The stitches of a sewing machine can be classified into two types, lock stitches and chain stitches. Lock-stitch stitches are most commonly made up of two stitches that are interwoven like a twine with the point of interweaving in the middle of the material. Two stitches are like two locks locking each other when viewed in cross section of the stitch, and are therefore called lock stitches. The stitch is used for sewing materials such as cotton, wool fabric or leather with small shrinkage rate, and the front and the back of the stitch have the same shape as a dotted line. The stitches are distributed densely, the sewing fastness is generally better than that of manual sewing, the sewing machine can sew fabrics such as cotton, hemp, silk, wool, rayon and the like and products such as leather, plastics, paper and the like, the sewed stitches are neat, beautiful, flat and firm, the sewing speed is high, and the use is simple and convenient. And derives the artistic forms of hand-push embroidery, computer embroidery, etc.

The thread end cutting device of the commonly used sewing machine is far away from the needle head, the thread end is long, the follow-up secondary cutting is required to be carried out manually, the thread end needs to be manually pulled by manpower when the thread end is cut, the thread end is cut off by utilizing the tool bit, and the practicability is not high.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a sewing machine is with stub cutting device to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the short thread end cutting device for the sewing machine comprises a machine body, a presser foot, a sewing needle and a cutting assembly, wherein the presser foot is fixedly installed at the bottom of the machine body, the sewing needle is arranged at the bottom of the machine body, and the cutting assembly is fixedly installed on a surface sensor of the presser foot.

The cutting-off component comprises an installation box, a driving motor, a transmission rod, a transmission wheel, a limiting bracket, a rotating wheel, a connecting rod, an installation bracket, a cutter groove, a cutter head, a locking block and a movable block, the bottom of the presser foot is fixedly provided with an installation box, the interior of the installation box is fixedly provided with a driving motor, a transmission rod is fixedly arranged at the power output end of the driving motor, a driving wheel is fixedly arranged on the surface of the transmission rod, the surface of the mounting box is fixedly provided with a limiting bracket, the surface of the limiting bracket is movably connected with a rotating wheel, the surface of the rotating wheel is movably connected with a connecting rod, the top of the presser foot is fixedly provided with an installation bracket, a cutter groove is fixedly arranged in the mounting bracket, a cutter head is movably connected in the mounting bracket, locking blocks are fixedly mounted at two ends of the cutter groove, and movable blocks are fixedly mounted at two ends of the cutter head.

Preferably, the right side fixed mounting of install bin has the backup pad, and spacing support fixed mounting is on the surface of backup pad.

Preferably, the inside swing joint of spacing support has the pivot, and the inside fixed mounting of spacing support has the bearing with pivot looks adaptation, and the runner passes through pivot and bearing and spacing support swing joint.

Preferably, the transmission wheel is in transmission connection with the rotating wheel through a transmission belt.

Preferably, the mounting bracket is fixedly mounted on the surface of the presser foot through the supporting leg, and the surface of the mounting bracket is provided with a sliding groove.

Preferably, the rotating wheel is movably connected with the movable block through a connecting rod.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the short thread end cutting device for the sewing machine is improved in position and structure through the common short thread end cutting device, so that the cut thread end can be effectively shortened when the short thread end cutting device is used, the trouble of secondary trimming by follow-up manpower is omitted, and the cost is saved.

2. This short thread end cutting device for sewing machine through the cutting assembly who sets up, makes it can cut off the end of a thread to automation when using, has saved the trouble of manual operation, and its simple structure, easily realizes, has wide development space and higher spreading value.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of the point A in FIG. 1 according to the present invention;

fig. 3 is a top view of the mounting bracket of the present invention.

In the figure: 1. a body; 2. a presser foot; 3. a sewing needle; 4. cutting off the assembly; 401. installing a box; 402. a drive motor; 403. a transmission rod; 404. a driving wheel; 405. a limiting bracket; 406. a rotating wheel; 407. a connecting rod; 408. mounting a bracket; 409. a cutter groove; 410. a cutter head; 411. a locking block; 412. a movable block.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides an embodiment: the utility model provides a stub cutting device for sewing machine, including fuselage 1, presser foot 2, sewing needle 3 and cut off subassembly 4, the bottom fixed mounting of fuselage 1 has presser foot 2, the bottom of fuselage 1 is provided with sewing needle 3, the quick fixed mounting of table of presser foot 2 has cut off subassembly 4, stub cutting device for sewing machine, position and structure through the stub cutting device to commonly used improve, make its stub after can effectively shortening the cutting when using, saved the trouble that follow-up manpower carries out the secondary and prunes, the cost is saved.

The cutting assembly 4 comprises an installation box 401, a driving motor 402, a transmission rod 403, a transmission wheel 404, a limiting bracket 405, a rotating wheel 406, a connecting rod 407, an installation bracket 408, a knife groove 409, a knife head 410, a locking block 411 and a movable block 412, the bottom of the presser foot 2 is fixedly provided with the installation box 401, the interior of the installation box 401 is fixedly provided with the driving motor 402, the power output end of the driving motor 402 is fixedly provided with the transmission rod 403, the surface of the transmission rod 403 is fixedly provided with the transmission wheel 404, the surface of the installation box 401 is fixedly provided with the limiting bracket 405, the right side of the installation box 401 is fixedly provided with a supporting plate, the limiting bracket 405 is fixedly arranged on the surface of the supporting plate, the surface of the limiting bracket 405 is movably connected with the rotating wheel 406, the interior of the limiting bracket 405 is movably connected with a rotating shaft, the interior of the limiting bracket 405 is fixedly provided with a bearing matched with the rotating shaft, and the rotating wheel 406 is movably connected with the limiting bracket 405 through the rotating shaft and the bearing, the transmission wheel 404 is in transmission connection with the rotating wheel 406 through a transmission belt, the surface of the rotating wheel 406 is movably connected with a connecting rod 407, the top of the presser foot 2 is fixedly provided with a mounting bracket 408, the mounting bracket 408 is fixedly arranged on the surface of the presser foot 2 through a supporting leg, the surface of the mounting bracket 408 is provided with a sliding groove, the inside of the mounting bracket 408 is fixedly provided with a knife groove 409, the inside of the mounting bracket 408 is movably connected with a knife head 410, two ends of the knife groove 409 are fixedly provided with locking blocks 411, two ends of the knife head 410 are fixedly provided with movable blocks 412, the rotating wheel 406 is movably connected with the movable blocks 412 through a connecting rod 407, the short thread end cutting device for the sewing machine can automatically cut off the thread end when in use through the arranged cutting component 4, thereby saving the trouble of manual operation, and the structure is simple, the realization is easy, and the method has wide development space and higher popularization value.

The working principle is as follows: when the thread end is cut off, the driving motor 402 drives the driving rod 403 to rotate, the driving wheel 404 on the surface of the driving rod 403 drives the rotating wheel 406 to rotate, the rotating wheel 406 rotates and simultaneously drives the cutter head 410 to slide in the mounting bracket 408 through the connecting rod 407, so that the thread end is cut off, and the distance from the cutting component 4 to the sewing needle 3 is short, so that the length of the thread end can be greatly shortened, and the trouble of manually carrying out secondary trimming is avoided.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or scope of the present invention. Accordingly, the embodiments of the present invention are exemplary, and not limiting. The scope of the invention is indicated by the appended claims rather than by the foregoing description, and all changes that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a stub cutting device for sewing machine, includes fuselage (1), presser foot (2), sewing needle (3) and cuts off subassembly (4), its characterized in that: a presser foot (2) is fixedly installed at the bottom of the machine body (1), a sewing needle (3) is arranged at the bottom of the machine body (1), and a cutting component (4) is fixedly installed on the surface sensitivity of the presser foot (2);

the cutting-off assembly (4) comprises an installation box (401), a driving motor (402), a transmission rod (403), a transmission wheel (404), a limiting support (405), a rotating wheel (406), a connecting rod (407), an installation support (408), a knife groove (409), a knife head (410), a locking block (411) and a movable block (412), the bottom of the presser foot (2) is fixedly provided with the installation box (401), the inside of the installation box (401) is fixedly provided with the driving motor (402), the power output end of the driving motor (402) is fixedly provided with the transmission rod (403), the surface of the transmission rod (403) is fixedly provided with the transmission wheel (404), the surface of the installation box (401) is fixedly provided with the limiting support (405), the surface of the limiting support (405) is movably connected with the rotating wheel (406), and the surface of the rotating wheel (406) is movably connected with the connecting rod (407), the clamp is characterized in that a mounting support (408) is fixedly mounted at the top of the pressure foot (2), a knife groove (409) is fixedly mounted inside the mounting support (408), a knife head (410) is movably connected inside the mounting support (408), locking blocks (411) are fixedly mounted at two ends of the knife groove (409), and movable blocks (412) are fixedly mounted at two ends of the knife head (410).

2. The head of thread cutting device for a sewing machine according to claim 1, characterized in that: the right side fixed mounting of install bin (401) has the backup pad, and spacing support (405) fixed mounting is on the surface of backup pad.

3. The head of thread cutting device for a sewing machine according to claim 1, characterized in that: the inside swing joint of spacing support (405) has the pivot, and the inside fixed mounting of spacing support (405) has the bearing with pivot looks adaptation, and runner (406) through pivot and bearing and spacing support (405) swing joint.

4. The head of thread cutting device for a sewing machine according to claim 1, characterized in that: the transmission wheel (404) is in transmission connection with the rotating wheel (406) through a transmission belt.

5. The head of thread cutting device for a sewing machine according to claim 1, characterized in that: the mounting bracket (408) is fixedly mounted on the surface of the presser foot (2) through a support leg, and a sliding groove is formed in the surface of the mounting bracket (408).

6. The head of thread cutting device for a sewing machine according to claim 1, characterized in that: the rotating wheel (406) is movably connected with the movable block (412) through a connecting rod (407).