CN217809970U - Trimming cutter device of sewing machine - Google Patents

Abstract

The utility model provides a trimming cutter device of a sewing machine, which belongs to the technical field of sewing devices and aims to solve the problems that the prior trimming cutter device cuts off sewing threads and takes out sewing materials when a presser foot is opened, and the taking out of the sewing materials is complicated, and comprises a workbench, a sewing main body, a presser foot connecting rod, a cutter sliding cover, a presser foot rotating shaft, a presser foot pressing foot, a sewing thread cutting mechanism and a thread cutting protection mechanism; the sewing main body is fixedly connected to the upper end face of the workbench; the presser foot connecting rod is connected to the lower end face of the sewing main body in a sliding manner; the cutter sliding cover is fixedly connected to the lower end face of the sewing main body; the presser foot rotating shaft is rotatably connected to the lower side of the presser foot connecting rod; the pressing foot is fixedly connected to the pressing foot rotating shaft; the sewing thread cutting mechanism is arranged inside the cutter sliding cover; the tangent line protection mechanism is arranged inside the material pressing foot. Through adopting sewing thread cutting mechanism, realize having reduced staff's step, through adopting tangent line protection machanism, realize that the staff puts the protection piece at the sewing thread lower extreme.

Description

Trimming cutter device of sewing machine

Technical Field

The utility model belongs to the technical field of sewing device, more specifically say, in particular to trimming cutter device of sewing machine.

Background

The sewing machine is a machine for forming stitches on a sewing material with a sewing thread to interweave or sew one or more layers of the sewing material, and when the sewing material is sewed, a worker needs to operate a trimming cutter device arranged at the rear side of a presser foot of the sewing machine to cut off the sewing thread and take out the sewing material from the sewing machine to finish sewing of the sewing material.

Based on the aforesaid, current repair shear knife device cuts off the sewing thread through the cutter structure, and the staff has sewed up the seam material after, need operate the cutter earlier and cut off the sewing thread and take out the seam material opening the presser foot, takes out the seam material comparatively loaded down with trivial details, simultaneously because the height of seam material differs, the cutter needs to cut off the height of sewing thread also different down, and the cutter causes the damage to the seam material easily, influences the quality of seam material.

Accordingly, in view of the above, the present invention is to provide a trimming cutter device for a sewing machine, which is improved in view of the existing structure and defects, so as to achieve the purpose of higher practical value.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a trimming cutter device of sewing machine to solve current trimming cutter device and cut off the sewing thread through the cutter structure, the staff has sewed up the sewing material after, need the elder generation operation cutter to cut off the sewing thread and take out the sewing material opening the presser foot, it is comparatively loaded down with trivial details to take out the sewing material, simultaneously because the height of sewing material differs, the cutter needs the height of cutting down the sewing thread also inequality, the cutter leads to the fact the damage to the sewing material easily, influence the problem of the quality of sewing material.

The utility model relates to a trimming cutter device of sewing machine's purpose and efficiency are reached by following concrete technical means:

a trimming cutter device of a sewing machine comprises a workbench, a sewing main body, a sewing needle, a presser foot connecting rod, a cutter sliding cover, a presser foot rotating shaft, a presser foot, a sewing thread cutting mechanism and a thread cutting protection mechanism; the sewing main body is fixedly connected to the middle position of the upper end face of the workbench; the sewing needle is connected to the left side of the lower end face of the sewing main body in a sliding mode; the presser foot connecting rod is connected to the left side of the lower end face of the sewing main body in a sliding manner; the cutter sliding cover is fixedly connected to the left side of the lower end face of the sewing main body; the presser foot rotating shaft is rotatably connected to the lower side of the presser foot connecting rod; the pressing foot is fixedly connected to the pressing foot rotating shaft; the sewing thread cutting mechanism is arranged inside the cutter sliding cover; the tangent line protection mechanism is arranged inside the material pressing foot.

Further, the sewing thread cutting mechanism comprises: the power transmission device comprises a power transmission disc A, a power rotating shaft, a power transmission disc B and a power transmission belt; the power transmission disc A is coaxially and fixedly connected to the right side of the presser foot rotating shaft; the power rotating shaft is rotatably connected to the front side inside the cutter sliding cover; the power transmission disc B is coaxially and fixedly connected to the right side of the power rotating shaft; and the power transmission belt is connected to the power transmission disc A and the power transmission disc B in a transmission manner.

Further, the sewing thread cutting mechanism further comprises: the cutting line gear, the cutting line sliding block and the cutting line rack are arranged on the frame; the tangent gear is coaxially and fixedly connected to the left side of the power rotating shaft; the tangent rack is connected inside the cutter sliding cover in a sliding manner; the tangent rack is fixedly connected to the middle position of the front end face of the tangent sliding block, and the tangent gear and the tangent rack are meshed to form a gear rack transmission mechanism together.

Further, the sewing thread cutting mechanism further comprises: a buffer spring and a wire cutter; the four groups of buffer springs are respectively and uniformly distributed and fixedly connected to the lower end face of the tangent slide block; the thread cutter is elastically connected to the lower sides of the four groups of buffer springs.

Further, tangent line protection machanism is including: a protective rotation block; the protection rotating block is rotatably connected to the right side inside the material pressing foot.

Further, tangent line protection machanism still includes: a retraction spring and a guard block; the contraction spring is fixedly connected to the left end face of the protective rotating block; the protection block is elastically connected to the left end face of the contraction spring.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model is characterized in that when in use, the material pressing foot is broken off and rotated to drive the presser foot rotating shaft to rotate, the presser foot rotating shaft is rotated to drive the power transmission disc A to rotate, the power transmission disc A is rotated to drive the power transmission belt to transmit, the power transmission belt transmits to drive the power transmission disc B to rotate, the power transmission disc B rotates to drive the power rotating shaft to rotate, the power rotating shaft rotates to drive the tangent gear to rotate, the tangent gear rotates to drive the meshed tangent rack to slide, the tangent rack slides to drive the tangent slider to slide, the tangent slider slides to drive the buffer spring to slide, the buffer spring slides to drive the tangent knife to slide, thereby realizing cutting the sewing thread when taking out the sewing piece,

the utility model discloses in use presses the material foot to rotate because the protection piece blocks to drive the rotatory piece of protection and is pressing the inside rotation of material foot, and the pulling protection piece drives the shrink spring and stretches out and draws back, protects the sewing piece when realizing the tangent line sword tangent line.

The utility model discloses an adopt sewing thread cutting mechanism, realize taking out sewing piece from pressing the material foot, it drives the thread cutter decline to rotate to press the material foot, cut the sewing thread down, need cut the problem of sewing thread earlier before avoiding the staff to take out sewing piece, staff's step has been reduced, staff's efficiency has been improved, through adopting four buffer spring groups, it is the space that has the buffering to realize the thread cutter to thread the line, make the thread cutter cut the line have the dynamics of cutting down all the time, through adopting tangent line protection mechanism, realize pressing when the material foot rotates because the protection piece blocks to drive the rotatory piece of protection and rotates and drive the protection piece at the material cutting foot and be in the normal position, it is tensile that the pulling protection piece drives the shrink spring, make things convenient for the staff to put the protection piece at the sewing thread lower extreme, avoid the thread cutter to thread the problem that the sewing piece was cut to sewing piece, the emergence of the unexpected condition of sewing thread has been reduced to cut off.

Drawings

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

Fig. 2 is a schematic structural view of the sewing main body of the present invention.

Fig. 3 is a schematic structural view of the trimming and cutting device of the present invention.

Fig. 4 is a schematic structural view of the sewing thread cutting mechanism of the present invention.

Fig. 5 is a schematic structural diagram of the tangent line protection mechanism of the present invention.

In the drawings, the corresponding relationship between the component names and the reference numbers is as follows:

1. a work table; 2. a sewing body; 3. a sewing needle; 4. a presser foot connecting rod; 5. a cutter sliding cover; 6. a presser foot spindle; 601. a power transmission disc A; 7. pressing a material foot; 8. a power rotating shaft; 801. a power transmission disc B; 802. a tangent gear; 9. a power transmission belt; 10. a line cutting slide block; 1001. a tangent rack; 11. a buffer spring; 12. a wire cutter; 13. a protective rotation block; 14. a retraction spring; 15. and a protection block.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

The embodiment is as follows:

as shown in figures 1 to 5:

the utility model provides a trimming cutter device of a sewing machine, which comprises a workbench 1, a sewing main body 2, a sewing needle 3, a presser foot connecting rod 4, a cutter sliding cover 5, a presser foot rotating shaft 6, a pressing foot 7, a sewing thread cutting mechanism and a thread cutting protection mechanism; the sewing main body 2 is fixedly connected to the middle position of the upper end surface of the workbench 1; the sewing needle 3 is connected to the left side of the lower end face of the sewing main body 2 in a sliding mode; the presser foot connecting rod 4 is connected to the left side of the lower end face of the sewing main body 2 in a sliding manner; the cutter sliding cover 5 is fixedly connected to the left side of the lower end face of the sewing main body 2; the presser foot rotating shaft 6 is rotatably connected to the lower side of the presser foot connecting rod 4; the pressing foot 7 is fixedly connected on the pressing foot rotating shaft 6; the sewing thread cutting mechanism is arranged inside the cutter sliding cover 5; the tangent line protection mechanism is arranged inside the swaging foot 7.

Wherein, sewing thread cutting mechanism is including: the power transmission device comprises a power transmission disc A601, a power rotating shaft 8, a power transmission disc B801 and a power transmission belt 9; the power transmission disc A601 is coaxially and fixedly connected to the right side of the presser foot rotating shaft 6; the power rotating shaft 8 is rotatably connected to the front side inside the cutter sliding cover 5; the power transmission disc B801 is coaxially and fixedly connected to the right side of the power rotating shaft 8; the power transmission belt 9 is connected to the power transmission disc A601 and the power transmission disc B801 in a transmission mode, in the using process, the material pressing foot 7 is pulled off and rotated to drive the pressing foot rotating shaft 6 to rotate, the pressing foot rotating shaft 6 rotates to drive the power transmission disc A601 to rotate, the power transmission disc A601 rotates to drive the power transmission belt 9 to transmit, the power transmission belt 9 transmits to drive the power transmission disc B801 to rotate, and the power transmission disc B801 rotates to drive the power transmission shaft 8 to rotate.

Wherein, sewing thread cutting mechanism is still including: a tangent gear 802, a tangent slider 10 and a tangent rack 1001; the tangent gear 802 is coaxially and fixedly connected to the left side of the power rotating shaft 8; the tangent rack 1001 is connected inside the cutter sliding cover 5 in a sliding manner; tangent line rack 1001 fixed connection is in tangent line slider 10 front end face intermediate position, and tangent line gear 802 and the meshing of tangent line rack 1001 constitute rack and pinion drive mechanism jointly, and in the use, power pivot 8 rotates and drives tangent line gear 802 and rotate, and tangent line gear 802 rotates and drives the tangent line rack 1001 slip of meshing, and tangent line rack 1001 slides and drives tangent line slider 10 and slide.

Wherein, sewing thread cutting mechanism is still including: a buffer spring 11 and a wire cutter 12; the four groups of buffer springs 11 are arranged, and the four groups of buffer springs 11 are respectively and uniformly distributed and fixedly connected to the lower end face of the tangent slide block 10; the wire cutting knife 12 is elastically connected to the lower sides of the four groups of buffer springs 11, and in the using process, the wire cutting slide block 10 slides to drive the buffer springs 11 to slide, and the buffer springs 11 slide to drive the wire cutting knife 12 to slide.

Wherein, tangent line protection machanism is including: a protective rotation block 13; the protection rotating block 13 is rotatably connected to the right side inside the material pressing foot 7, and in the using process, the protection rotating block 13 rotates inside the material pressing foot 7.

Wherein, tangent line protection machanism is still including: retraction spring 14 and guard block 15; the contraction spring 14 is fixedly connected to the left end face of the protective rotating block 13; the protection piece 15 elastic connection is at shrink spring 14 left end face, and in the use, pulling protection piece 15 drives shrink spring 14 flexible.

The specific use mode and function of the embodiment are as follows:

in the use, break off with the fingers and thumb and press material foot 7 to rotate and drive presser foot pivot 6 and rotate, presser foot pivot 6 rotates and drives power transmission dish A601 and rotate, power transmission dish A601 rotates and drives power transmission belt 9 transmission, power transmission belt 9 transmission drives power transmission dish B801 and rotates, power transmission dish B801 rotates and drives power transmission shaft 8 and rotates, power transmission shaft 8 rotates and drives tangent line gear 802 and rotates, tangent line gear 802 rotates and drives the tangent line rack 1001 slip of meshing, tangent line rack 1001 slides and drives tangent line slider 10 and slides, tangent line slider 10 slides and drives buffer spring 11 and slides, buffer spring 11 slides and drives tangent line sword 12 and slides, rotatory piece 13 of protection is being pressed the inside rotation of material foot 7, pulling protection piece 15 drives contraction spring 14 and stretches out and draws back, the tangent line when realizing taking out the sewing piece.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims (6)

1. The utility model provides a trimming cutter device of sewing machine which characterized in that: comprises a workbench (1), a sewing main body (2), a sewing needle (3), a presser foot connecting rod (4), a cutter sliding cover (5), a presser foot rotating shaft (6), a presser foot (7), a sewing thread cutting mechanism and a thread cutting protection mechanism; the sewing main body (2) is fixedly connected to the middle position of the upper end face of the workbench (1); the sewing needle (3) is connected to the left side of the lower end face of the sewing main body (2) in a sliding manner; the presser foot connecting rod (4) is connected to the left side of the lower end face of the sewing main body (2) in a sliding manner; the cutter sliding cover (5) is fixedly connected to the left side of the lower end face of the sewing main body (2); the presser foot rotating shaft (6) is rotatably connected to the lower side of the presser foot connecting rod (4); the pressing foot (7) is fixedly connected to the pressing foot rotating shaft (6); the sewing thread cutting mechanism is arranged inside the cutter sliding cover (5); the tangent line protection mechanism is arranged inside the material pressing foot (7).

2. A trimming cutter device of a sewing machine according to claim 1, wherein: the sewing thread cutting mechanism comprises: the power transmission device comprises a power transmission disc A (601), a power rotating shaft (8), a power transmission disc B (801) and a power transmission belt (9); the power transmission disc A (601) is coaxially and fixedly connected to the right side of the presser foot rotating shaft (6); the power rotating shaft (8) is rotatably connected to the front side inside the cutter sliding cover (5); the power transmission disc B (801) is coaxially and fixedly connected to the right side of the power rotating shaft (8); and the power transmission belt (9) is in transmission connection with the power transmission disc A (601) and the power transmission disc B (801).

3. A trimming cutter device of a sewing machine according to claim 2, wherein: the sewing thread cutting mechanism further comprises: a tangent gear (802), a tangent slider (10) and a tangent rack (1001); the tangent gear (802) is coaxially and fixedly connected to the left side of the power rotating shaft (8); the tangent rack (1001) is connected inside the cutter sliding cover (5) in a sliding manner; the tangent rack (1001) is fixedly connected to the middle position of the front end face of the tangent sliding block (10), and the tangent gear (802) and the tangent rack (1001) are meshed to form a gear rack transmission mechanism together.

4. A trimming cutter device of a sewing machine according to claim 3, wherein: the sewing thread cutting mechanism further comprises: a buffer spring (11) and a wire cutter (12); the four groups of buffer springs (11) are arranged, and the four groups of buffer springs (11) are respectively and uniformly distributed and fixedly connected to the lower end face of the tangent slide block (10); the thread cutter (12) is elastically connected to the lower sides of the four groups of buffer springs (11).

5. A trimming cutter device of a sewing machine according to claim 1, wherein: tangent line protection machanism including: a protective rotation block (13); the protective rotating block (13) is rotatably connected to the right side inside the material pressing foot (7).

6. The trimming cutter device of a sewing machine according to claim 5, wherein: tangent line protection machanism is still including: a retraction spring (14) and a guard block (15); the contraction spring (14) is fixedly connected to the left end face of the protective rotating block (13); the protection block (15) is elastically connected to the left end face of the contraction spring (14).

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