CN214362124U

CN214362124U - Side cutting mechanism of sewing machine

Info

Publication number: CN214362124U
Application number: CN202120037343.0U
Authority: CN
Inventors: 李海挺
Original assignee: Taizhou Snoke Electronic Science And Technology Co ltd
Current assignee: Taizhou Snoke Electronic Science And Technology Co ltd
Priority date: 2021-01-07
Filing date: 2021-01-07
Publication date: 2021-10-08
Anticipated expiration: 2031-01-07

Abstract

The utility model provides a mechanism is cut to sewing machine's side belongs to sewing machine technical field. It is comparatively complicated that it has solved current cutters structure, and structural stability is relatively poor, assembles inconvenient problem. This sewing machine's side cutting mechanism, including sewing machine aircraft nose and bottom plate, be provided with the cutter on the sewing machine aircraft nose, can dismantle on the outer wall of sewing machine aircraft nose and link firmly the motor, articulated on the sewing machine aircraft nose between motor and the cutter have the lever rocking arm, be provided with transmission between the left end of lever rocking arm and the motor and make the lever rocking arm do the swing of upper and lower slope around the swing fulcrum through transmission, still be provided with the drive arrangement that drives the cutter and upwards lift up on the sewing machine aircraft nose. The utility model discloses simple structure, operation stable in structure, convenient assembling.

Description

Side cutting mechanism of sewing machine

Technical Field

The utility model belongs to the technical field of sewing machine, a side cutting mechanism of sewing machine is related to.

Background

A sewing machine is a machine that uses one or more sewing threads to form one or more stitches in a fabric, thereby interweaving or stitching one or more layers of the fabric. In the sewing process of the clothes, after a cutter is needed to cut and trim the cloth edge, a plurality of layers of cloth and edge covering strips are sewn, and the sewing machine is characterized in that a sewing stitch is added on the left side for reinforcement; at present, a multifunctional single-needle bag-cutting integrated flat sewing machine for a garment processing factory sews once, and then sews once by using the single-needle flat sewing machine for stitch reinforcement, so that the use is inconvenient.

In view of the above problems, a sewing machine is available in the market, for example, the chinese patent nos.: the "201510586755.9" authorization notice number is: "CN 105113131B" a side cutter bordures two needle lockstitch sewing machine of borduring, its concrete structure includes sewing machine aircraft nose and bottom plate, is provided with the faller on the bottom plate, still includes cutter motion separating mechanism, back tow boat mechanism, bordures and sews and inhale waste material mechanism, cutter motion separating mechanism and back tow boat mechanism respectively with the upper shaft coupling of sewing machine aircraft nose, bordures and sews and inhale waste material mechanism and set up on the bottom plate.

The specific structure of the cutter movement separating mechanism is as follows: the device comprises an eccentric cam, a swinging bracket, a swinging shaft, a length adjusting connecting rod, a cutter shaft seat, a cutter clutch spring, a clutch crank bracket, a cutter clutch knob and a cutter reset wrench, wherein the eccentric cam is sleeved on an upper shaft of a sewing machine head, the eccentric cam is connected with the swinging shaft through a swinging shaft crank I, the swinging shaft is sleeved with the swinging shaft bracket, a swinging shaft crank II is sleeved on the swinging shaft in the middle part of the swinging shaft bracket, the other end of the swinging shaft crank II is connected with one end of the length adjusting connecting rod, the other end of the length adjusting connecting rod is connected with the cutter clutch crank, the cutter clutch crank is connected with the clutch crank bracket, the clutch crank bracket is fixed on the cutter shaft seat through a screw, the cutter shaft seat is connected with the cutter seat through a cutter seat guide rod and a cutter seat rod, the cutter shaft seat is connected with the cutter clutch bracket through a cutter shaft, and the cutter reset wrench is connected on one side of the cutter shaft seat, the opening end of the cutter clutch crank is in contact with a sliding block sleeved on the cutter clutch support, the cutter frame is connected with the cutter seat through a screw, the cutter is connected onto the cutter frame, and the cutter clutch spring is connected with the screw arranged on the cutter seat.

In the structure, the cutter is fixed on the cutter frame, the cutter frame is connected with the cutter seat, the cutter seat is driven in a transmission linkage manner through an upper shaft of the sewing machine head, and the number of driving structures connected with the upper shaft of the sewing machine head is large, the transmission structure is complex, and the stability of the transmission structure is poor; the cutter of foretell structure passes through the upper shaft drive of sewing machine aircraft nose, and inconvenient cutter structure installs additional on current traditional sewing machine aircraft nose, and it is inconvenient to make production, and the dismantlement maintenance of inconvenient cutter structure, and cost of maintenance is higher, uses inconveniently.

Disclosure of Invention

The utility model aims at the above-mentioned problem that exists among the prior art, provide a transmission structural stability is high, through installing the power take off that the cutter was realized to the motor additional, directly drive the drive by the motor, cutter transmission simple structure, the cloth cutting action of cutter and the normal sewing action of sewing machine's eedle can part relatively, convenient to use's sewing machine's side cut mechanism.

The purpose of the utility model can be realized by the following technical proposal: a side cutting mechanism of a sewing machine comprises a sewing machine head and a base plate, wherein a needle for sewing cloth is arranged on the sewing machine head, and the needle is vertically distributed above the base plate The lower lifting causes the cutter to cut edges of the cloth on the bottom plate, and the sewing machine head is also provided with a driving device which drives the cutter to lift upwards.

The side cutting mechanism of the sewing machine is mainly characterized in that a lever rocker is hinged on a sewing machine head, a cutter is guided to lift up and down on the sewing machine head through the lever principle, and the structure is stable; the driving device is arranged on the head of the sewing machine, the cutter is driven to be lifted upwards through the driving device, when the cutter is not needed to cut cloth, the cutter is lifted, interference on normal sewing of a needle of the sewing machine is avoided, and the use is convenient; the side cutting mechanism of the sewing machine can be additionally installed under the condition of not changing the internal structure of the sewing machine head, and is convenient to assemble and use; in actual use, the rotation speed of the motor is set to be synchronous with the rotation speed of the main shaft of the sewing machine head.

In the side cutting mechanism of the sewing machine, the sewing machine head is provided with the hinge block which is movably arranged and is positioned between the lever rocker arm and the sewing machine head, the hinge block is in upper and lower guide fit with the sewing machine head, and the hinge block is hinged with the lever rocker arm through the pin shaft to form a swinging fulcrum. The purpose of this is: the position of the swing fulcrum formed at the hinge joint of the hinge block and the lever rocker arm can be guided and displaced up and down relative to the sewing machine head, and the structure is stable.

In the above-mentioned side cutting mechanism of a sewing machine, the driving device includes a cylinder, the cylinder is vertically fixed on the sewing machine head, a cylinder rod of the cylinder is detachably and fixedly connected with the hinge block, the hinge block is provided with a guide rod vertically arranged, the sewing machine head is provided with a guide groove, and the guide rod is positioned in the corresponding guide groove and is in guide fit with the guide groove. The hinge block is guided to move up and down in the corresponding guide groove through the guide rod, and the displacement structure is stable; when the cylinder rod of the cylinder retracts on the cylinder body of the cylinder, the left end of the lever rocker hinged with the transmission device of the motor is used as a swinging fulcrum, the right end of the lever rocker hinged with the cutter swings upwards in an inclined mode, and the cutter is lifted upwards.

In foretell sewing machine's side cut mechanism, the sewing machine aircraft nose on have the bar guide rail that is vertical setting, this bar guide rail direction assembly on the sewing machine aircraft nose, the middle part position of bar guide rail set firmly along the length direction of bar guide rail and put the hinge bar, the right-hand member and the hinge bar of lever rocking arm articulated through the round pin axle, the cutter be located the below of bar guide rail, be provided with the knife rest between this cutter and the bar guide rail, the cutter pass through knife rest fixed connection at the lower extreme of bar guide rail and be located the outside of eedle. The guide assembly of the strip-shaped guide rail on the sewing machine head prevents the cutter from shaking when the lever rocker arm swings obliquely to drive the cutter to lift up and down, and the structural stability is high.

In foretell sewing machine's side cut mechanism, the knife rest be flat bar platelike structure, the knife rest on horizontal interval distribution have be vertical setting two guide rails, the horizontal interval distribution of lower extreme of sewing machine aircraft nose have be vertical setting two guide ways, when the knife rest is connected the assembly between cutter, bar guide rail, the two guide rails of this knife rest are located the two guide ways of corresponding sewing machine aircraft nose and are used for the guide of knife rest upper and lower motion. The purpose that sets up like this can further prevent that the cutter from appearing rocking phenomenon when going up and down to go up and down, causes the cutter operation stable.

In foretell side cut mechanism of sewing machine, transmission set up the transmission shaft on the sewing machine aircraft nose including rotating, the parallel interval distribution of main shaft of transmission shaft and motor, pass through the transmission of drive belt between the main shaft of this transmission shaft and motor, the transmission shaft on be provided with the connecting rod that is vertical distribution, the transmission shaft pass through eccentric wheel transmission with the upper end of connecting rod, the lower extreme of connecting rod and the one end of lever rocking arm pass through the round pin axle and articulate. During actual manufacturing, the eccentric wheel is axially assembled on the transmission shaft, the upper end of the connecting rod is rotatably assembled on the eccentric wheel, and when the transmission shaft is driven by a main shaft of the motor to rotate, the connecting rod is moved up and down by the rotation of the eccentric wheel so as to drive the left end of the lever rocker arm to swing up and down; when the motor stops running, the hinged part of the left end of the lever rocker and the lower end of the connecting rod is used as a swinging fulcrum through the limit of the eccentric wheel, and the right end of the lever rocker hinged with the cutter swings upwards in an inclined mode.

In the side cutting mechanism of the sewing machine, the sewing machine head is fixedly provided with the assembly frame, the connecting rod is positioned in an assembly groove formed between the assembly frame and the sewing machine head, the transmission shaft sequentially penetrates through the assembly frame and the sewing machine head, and corresponding bearings are arranged between the transmission shaft and the assembly frame as well as between the transmission shaft and the sewing machine head. The purpose of setting up like this can effectively prevent that the transmission shaft from taking place radial displacement when the rotation, stable in structure.

Compared with the prior art, the side cutting mechanism of the sewing machine has the advantages that: the structure is simple, the operation structure is stable, and a driving device for lifting the cutter upwards is arranged on the head of the sewing machine; when the cutter is not needed to cut the cloth, the cutter is lifted upwards through the driving device, and a needle of the sewing machine can sew normally; when the cutter is needed to cut the cloth, the cutter is lowered to the cloth cutting position through the driving device, one side of a machine needle of the sewing machine is normally sewn, the arranged cutter is normally used for cutting the cloth, and the use is convenient.

Drawings

FIG. 1 is a perspective view of the side cutting mechanism of the sewing machine.

Fig. 2 is a schematic perspective view of the side cutting mechanism of the sewing machine.

In the figure, 1, a sewing machine head; 2. a base plate; 3. a needle; 4. a cutter; 5. a motor; 6. a lever rocker arm; 7. a hinged block; 8. a cylinder; 9. a guide bar; 10. a strip-shaped guide rail; 11. a hinged lever; 12. a tool holder; 13. double guide rails; 14. a drive shaft; 15. a transmission belt; 16. a connecting rod; 17. an eccentric wheel; 18. assembling the frame; 19. and a bearing.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1 and 2, the side cutting mechanism of the sewing machine mainly comprises a sewing machine head 1 and a bottom plate 2, wherein a needle 3 for sewing cloth is arranged on the sewing machine head 1, the needle 3 is vertically distributed above the bottom plate 2, a cutter 4 is arranged on the sewing machine head 1, the cutter 4 and the needle 3 are distributed in parallel at intervals, a motor 5 is detachably and fixedly connected to the outer wall of the sewing machine head 1, a lever rocker arm 6 is hinged to the sewing machine head 1 between the motor 5 and the cutter 4, and the lever rocker arm 6 swings left and right and up and down with a hinge point of the sewing machine head 1 as a swing fulcrum; specifically, the method comprises the following steps: the sewing machine head 1 is provided with a hinge block 7 which is movably arranged, the hinge block 7 is positioned between the lever rocker arm 6 and the sewing machine head 1, the hinge block 7 is in upper and lower guide fit with the sewing machine head 1, and the hinge block 7 is hinged with the lever rocker arm 6 through a pin shaft to form a swinging fulcrum.

During actual manufacturing, a driving device for driving the cutter 4 to lift upwards is arranged on the sewing machine head 1; the specific implementation mode of the driving device is as follows: mainly constitute by cylinder 8, cylinder 8 is vertical setting firmly on sewing machine aircraft nose 1, and 8 poles of cylinder and articulated piece 7 of this cylinder 8 can be dismantled and link firmly, have the guide arm 9 that is vertical setting on articulated piece 7, have the guide way on the sewing machine aircraft nose 1, and guide arm 9 is arranged in the guide way that corresponds and guide way direction cooperation.

During actual manufacturing, the right end of the lever rocker arm 6 is hinged with the cutter 4, and specifically: the sewing machine head 1 is provided with a vertically arranged strip-shaped guide rail 10, the strip-shaped guide rail 10 is assembled on the sewing machine head 1 in a guiding way, a hinged rod 11 is fixedly arranged in the middle of the strip-shaped guide rail 10 along the length direction of the strip-shaped guide rail 10, the right end of a lever rocker arm 6 is hinged with the hinged rod 11 through a pin shaft, a cutter 4 is positioned below the strip-shaped guide rail 10, a cutter rest 12 is arranged between the cutter 4 and the strip-shaped guide rail 10, and the cutter 4 is fixedly connected to the lower end of the strip-shaped guide rail 10 through the cutter rest 12 and positioned on the outer side of a machine needle 3; in the actual design: this knife rest 12 is flat bar platelike structure, and horizontal interval distribution has the two guided way 13 that are vertical setting on knife rest 12, and the horizontal interval distribution of lower extreme of sewing machine aircraft nose 1 has the two guided way that are vertical setting, and when knife rest 12 connects and assembles between cutter 4, bar guide rail 10, the two guided ways 13 of this knife rest 12 are located the two guided ways of corresponding sewing machine aircraft nose 1 and are used for the guide of upper and lower motion of knife rest 12.

During actual manufacturing, a transmission device is arranged between the left end of the lever rocker arm 6 and the motor 5, and the lever rocker arm 6 is enabled to do up-and-down inclined swinging around a swinging fulcrum through the transmission device; specifically speaking: the specific implementation mode of the transmission device is as follows: the sewing machine head mainly comprises a transmission shaft 14 rotatably arranged on a sewing machine head 1, the transmission shaft 14 and a main shaft of a motor 5 are distributed in parallel at intervals, the transmission shaft 14 and the main shaft of the motor 5 are transmitted through a transmission belt 15, a connecting rod 16 which is vertically distributed is arranged on the transmission shaft 14, the transmission shaft 14 and the upper end of the connecting rod 16 are transmitted through an eccentric wheel 17, and the lower end of the connecting rod 16 is hinged with one end of a lever rocker arm 6 through a pin shaft; during actual design, an assembly frame 18 is fixedly arranged on the sewing machine head 1, the connecting rod 16 is positioned in an assembly groove formed between the assembly frame 18 and the sewing machine head 1, the transmission shaft 14 sequentially penetrates through the assembly frame 18 and the sewing machine head 1, and corresponding bearings 19 are arranged between the transmission shaft 14 and the assembly frame 18 as well as between the sewing machine head 1 and the assembly frame 18.

In practical use, when the left end of the lever rocker arm 6 is driven by the motor 5 and drives the upper and lower inclined swings through the transmission device, the cutter 4 is driven to move up and down on the sewing machine head 1, so that the cutter 4 cuts the edge of the cloth on the bottom plate 2.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the sewing machine head 1 is used more herein; a base plate 2; a needle 3; a cutter 4; a motor 5; a lever arm 6; a hinge block 7; a cylinder 8; a guide rod 9; a strip-shaped guide rail 10; a hinge lever 11; a tool holder 12; a double guide rail 13; a drive shaft 14; a transmission belt 15; a connecting rod 16; an eccentric wheel 17; a fitting frame 18; bearings 19, etc., but does not exclude the possibility of using other terms. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. The utility model provides a sewing machine's side cutting mechanism, includes sewing machine aircraft nose (1) and bottom plate (2), sewing machine aircraft nose (1) on be provided with needle (3) that are used for making up the cloth, needle (3) vertical distribution in the top of bottom plate (2), its characterized in that, sewing machine aircraft nose (1) on be provided with cutter (4), this cutter (4) and needle (3) parallel interval distribution, the outer wall of sewing machine aircraft nose (1) on can dismantle and link firmly motor (5), sewing machine aircraft nose (1) between motor (5) and cutter (4) on articulated have lever rocking arm (6), this lever rocking arm (6) with the pin joint with sewing machine aircraft nose (1) as the swing fulcrum horizontal hunting, the left end of lever rocking arm (6) and motor (5) between be provided with transmission and make lever rocking arm (6) around the swing fulcrum and do, The cloth edge cutting device comprises a lower inclined swing arm, wherein the right end of a lever rocker arm (6) is hinged with a cutter (4), when the lever rocker arm (6) swings upwards and downwards, the cutter (4) is driven to ascend and descend upwards in a guiding manner on a sewing machine head (1), so that the cutter (4) cuts edges of cloth on a base plate (2), and a driving device for driving the cutter (4) to lift upwards is further arranged on the sewing machine head (1).

2. The side cutting mechanism of the sewing machine according to claim 1, characterized in that the sewing machine head (1) is provided with a movably arranged hinge block (7), the hinge block (7) is positioned between the lever rocker (6) and the sewing machine head (1), the hinge block (7) is in upper and lower guide fit with the sewing machine head (1), and the hinge block (7) is hinged with the lever rocker (6) through a pin shaft to form a swing fulcrum.

3. The sidecut mechanism of the sewing machine according to claim 2, wherein the driving device comprises a cylinder (8), the cylinder (8) is vertically and fixedly arranged on the sewing machine head (1), a cylinder rod of the cylinder (8) is detachably and fixedly connected with the hinge block (7), a guide rod (9) which is vertically arranged is arranged on the hinge block (7), a guide groove is formed in the sewing machine head (1), and the guide rod (9) is positioned in the corresponding guide groove and is in guide fit with the guide groove.

4. The side cutting mechanism of the sewing machine according to claim 2, characterized in that a vertically arranged strip-shaped guide rail (10) is arranged on the sewing machine head (1), the strip-shaped guide rail (10) is assembled on the sewing machine head (1) in a guiding manner, a hinged rod (11) is fixedly arranged in the middle of the strip-shaped guide rail (10) along the length direction of the strip-shaped guide rail (10), the right end of the lever rocker (6) is hinged with the hinged rod (11) through a pin shaft, the cutter (4) is positioned below the strip-shaped guide rail (10), a cutter rest (12) is arranged between the cutter (4) and the strip-shaped guide rail (10), and the cutter (4) is fixedly connected to the lower end of the strip-shaped guide rail (10) through the cutter rest (12) and positioned outside the machine needle (3).

5. The side cutting mechanism of the sewing machine according to claim 4, characterized in that the knife rest (12) is of a flat strip-shaped plate structure, the knife rest (12) is transversely and alternately provided with vertically arranged double guide rails (13), the lower end of the sewing machine head (1) is transversely and alternately provided with vertically arranged double guide rails, and when the knife rest (12) is connected and assembled between the cutter (4) and the strip-shaped guide rail (10), the double guide rails (13) of the knife rest (12) are positioned on the corresponding double guide rails of the sewing machine head (1) for guiding the upward and downward movement of the knife rest (12).

6. The side cutting mechanism of the sewing machine according to claim 2 or 4, characterized in that the transmission device comprises a transmission shaft (14) rotatably arranged on the sewing machine head (1), the transmission shaft (14) and the main shaft of the motor (5) are distributed in parallel at intervals, the transmission shaft (14) and the main shaft of the motor (5) are transmitted through a transmission belt (15), the transmission shaft (14) is provided with connecting rods (16) which are vertically distributed, the upper ends of the transmission shaft (14) and the connecting rods (16) are transmitted through an eccentric wheel (17), and the lower end of the connecting rod (16) is hinged with one end of the lever rocker (6) through a pin shaft.

7. The sidecut mechanism of the sewing machine according to claim 6, characterized in that the sewing machine head (1) is fixedly provided with an assembly frame (18), the connecting rod (16) is positioned in an assembly groove formed between the assembly frame (18) and the sewing machine head (1), the transmission shaft (14) sequentially penetrates through the assembly frame (18) and the sewing machine head (1), and corresponding bearings (19) are arranged between the transmission shaft (14) and the assembly frame (18) as well as between the sewing machine head (1).