CN210368230U - Upper thread cutting mechanism of lockstitch sewing machine - Google Patents

Abstract

The utility model provides a top thread cutting mechanism of flush joint machine relates to the flush joint machine top thread field of cutting off. This flush joint machine's facial line thread cutting mechanism, including aircraft nose, seam needle mechanism, presser foot board dead lever, telescopic cylinder, connecting block, presser foot board and thread cutting mechanism, the bottom fixed mounting of aircraft nose has seam needle mechanism, and the left side of sewing needle mechanism is provided with the presser foot board dead lever, and the inside fixed mounting of presser foot board dead lever has telescopic cylinder, and telescopic cylinder's bottom fixed mounting has the connecting block. This flush joint machine's facial line thread cutting mechanism through presser foot and faller structural design as an organic whole for this mechanism can descend inside the faller when out of work, can not influence the normal work of flush joint machine, and this elevating system, simple structure simultaneously through the thread cutting mechanism who sets up between presser foot and faller, makes the device can get rid of the end of a thread that processing produced after accomplishing processing, has saved the process of follow-up pruning.

Description

Upper thread cutting mechanism of lockstitch sewing machine

Technical Field

The utility model relates to a flush joint machine facial line cuts off technical field, specifically is a flush joint machine's facial line thread cutting mechanism.

Background

The flat sewing machine is also called a flat car and is generally called a single-needle flat sewing machine, the flat sewing machine mainly uses a sewing thread to form a stitch on a sewing material, and the machine for interweaving or sewing one or more layers of sewing materials is generally divided into two purposes of thin materials and thick materials, the flat sewing machine can sew fabrics such as cotton, hemp, silk, wool, artificial fiber and the like, leather, plastics, paper and other products, the thin materials are generally used for knitting, underwear, shirts, uniforms and the like, the thick materials are generally used for various sports wear, jeans, fashion, overcoat, shoes and hats, leather jeans, bags and the like, the flat sewing machine is the most basic vehicle type in sewing equipment, and the upper thread of the flat sewing machine is the thread end generated after sewing.

The common flat sewing machine is provided with an automatic thread cutting device, but the automatic thread cutting device does not remove redundant thread ends on cloth after cutting off sewing threads, and special personnel are required to perform subsequent treatment on the left thread ends in the subsequent process, so that the production cost is improved, the production efficiency is reduced, and the product quality is also influenced.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The not enough to prior art, the utility model discloses try to overcome above defect, consequently the utility model provides a flush joint machine's facial line thread cutting mechanism to reached and removed follow-up processing from, improved efficiency, reduced at the end manufacturing cost, guaranteed product quality's effect.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides an upper thread cutting mechanism of flush joint machine, includes aircraft nose, seam needle mechanism, presser foot dead lever, telescopic cylinder, connecting block, presser foot and thread cutting mechanism, the bottom fixed mounting of aircraft nose has seam needle mechanism, the left side of sewing needle mechanism is provided with the presser foot dead lever, the inside fixed mounting of presser foot dead lever has telescopic cylinder, telescopic cylinder's bottom fixed mounting has the connecting block, the bottom fixed mounting of connecting block has the presser foot, the bottom of presser foot is provided with thread cutting mechanism.

The thread cutting mechanism comprises a needle plate, a telescopic rod, a fixed plate, a limiting block, a protective cover, a motor, a rotating shaft, an active wheel, a cutter fixing rod, a cutter, a vertical plate, a bearing seat, a driven wheel, a pin, a movable rod, a cutter groove fixing seat and a cutter groove, wherein the bottom of the foot pressing plate is provided with the needle plate, the telescopic rod is fixedly installed inside the needle plate, the fixed plate is fixedly installed at the top of the telescopic rod, the limiting block is fixedly installed at the top of the fixed plate, the protective cover is fixedly installed on the right side of the limiting block, the motor is fixedly installed inside the protective cover, the rotating shaft is fixedly installed at the power output end of the motor, the active wheel is fixedly installed on the surface of the rotating shaft, the cutter fixing rod is fixedly installed at the bottom of the protective, the bearing seat is characterized in that a driven wheel is fixedly mounted on one side opposite to the bearing seat, a pin is fixedly mounted on one side opposite to the driven wheel, a movable rod is movably connected to the surface of the pin, a knife groove fixing seat is fixedly mounted at the bottom of the movable rod, and a knife groove is fixedly mounted at the top of the knife groove fixing seat.

Furthermore, the bottom fixed mounting of connecting block has the pressure sole, presses sole and fixed plate to pass through stopper fixed mounting, and the bottom fixed mounting of fixed plate has the telescopic link, and six structures as an organic whole.

Furthermore, the left side swing joint of pivot has the swivel mount, and pivot and guard shield pass through swivel mount swing joint.

Furthermore, the driving wheel is in transmission connection with the driven wheel through a belt.

Furthermore, the bearing seat is movably connected with the driven wheel through a rolling shaft, a bearing matched with the rolling shaft is fixedly arranged inside the bearing seat, and the bearing seat, the driven wheel and the pin are of an integrated structure.

Furthermore, the inside of movable rod is seted up with the hole of pin looks adaptation, and passes through pin, movable rod and sword groove fixing base swing joint from the driving wheel.

(III) advantageous effects

The utility model provides a pair of flush joint machine's facial line thread cutting mechanism. The method has the following beneficial effects:

1. this flush joint machine's facial line thread cutting mechanism through presser foot and faller structural design as an organic whole for this mechanism can descend inside the faller when out of work, can not influence the normal work of flush joint machine, and this elevating system simultaneously, simple structure easily realizes, and is prior art, and relatively lower to just doing personnel's requirement, has satisfied the needs of modernized production.

2. This flush joint machine's facial line thread cutting mechanism through the thread cutting mechanism that sets up between presser foot board and faller for the device can get rid of the end of a thread that processing produced after accomplishing the processing, has saved the process of follow-up pruning, has fallen the low in production cost, has improved the quality of product simultaneously, avoids the product nest shape line ball to appear, has improved the aesthetic measure of seam material.

Drawings

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

FIG. 2 is a main view of the structure of the present invention;

fig. 3 is a schematic structural diagram of the thread cutting mechanism of the present invention.

In the figure: 1 machine head, 2 sewing needle mechanisms, 3 presser foot fixing rods, 4 telescopic cylinders, 5 connecting blocks, 6 presser foot, 7 thread cutting mechanisms, 701 needle plates, 702 telescopic rods, 703 fixing plates, 704 limiting blocks, 705 shields, 706 motors, 707 rotating shafts, 708 driving wheels, 709 cutter fixing rods, 710 cutters, 711 risers, 712 bearing seats, 713 driven wheels, 714 pins, 715 movable rods, 716 cutter groove fixing seats and 717 cutter grooves.

Detailed Description

According to the first aspect of the present invention, the present invention provides an upper thread cutting mechanism of a flat bed sewing machine, as shown in fig. 1-3, comprising a machine head 1, a sewing needle mechanism 2, a foot pressing plate fixing rod 3, a telescopic cylinder 4, a connecting block 5, a foot pressing plate 6 and a thread cutting mechanism 7, wherein the bottom of the machine head 1 is fixedly provided with the sewing needle mechanism 2, the left side of the sewing needle mechanism 2 is provided with the foot pressing plate fixing rod 3, the telescopic cylinder 4 is fixedly arranged inside the foot pressing plate fixing rod 3, the connecting block 5 is fixedly arranged at the bottom of the telescopic cylinder 4, the foot pressing plate 6 is fixedly arranged at the bottom of the connecting block 5, the bottom of the foot pressing plate 6 is provided with the thread cutting mechanism 7, through the structural design that the foot pressing plate 6 and the needle plate 701 are integrated into a whole, the mechanism can descend into the needle plate 701 when not working, and the normal work of the flat, the method is easy to realize, is the prior art, has lower requirements on personnel, and meets the requirements of modern production.

The thread cutting mechanism 7 comprises a needle plate 701, an expansion link 702, a fixed plate 703, a limit block 704, a shield 705, a motor 706, a rotating shaft 707, a driving wheel 708, a cutter fixing rod 709, a cutter 710, a vertical plate 711, a bearing seat 712, a driven wheel 713, a pin 714, a movable rod 715, a cutter groove fixing seat 716 and a cutter groove 717, the bottom of the presser foot plate 6 is provided with the needle plate 701, the expansion link 702 is fixedly installed inside the needle plate 701, the fixed plate 703 is fixedly installed on the top of the expansion link 702, the limit block 704 is fixedly installed on the top of the fixed plate 703, a connecting block 5 is fixedly installed at the bottom of the telescopic cylinder 4, the presser foot plate 6 is fixedly installed at the bottom of the connecting block 5, the presser foot plate 6 and the fixed plate 703 are fixedly installed through the limit block 704, the expansion link 702 is fixedly installed at the, a rotating shaft 707 is fixedly installed at the power output end of the motor 706, a swivel mount is movably connected to the left side of the rotating shaft 707, the rotating shaft 707 is movably connected to the shield 705 through the swivel mount, a driving wheel 708 is fixedly installed on the surface of the rotating shaft 707, a cutter fixing rod 709 is fixedly installed at the bottom of the shield 705, a cutter 710 is fixedly installed at the bottom of the cutter fixing rod 709, a vertical plate 711 is fixedly installed at the bottom of the shield 705, a bearing seat 712 is fixedly installed at one side opposite to the vertical plate 711, a driven wheel 713 is fixedly installed at one side opposite to the bearing seat 712, the driving wheel 708 is in transmission connection with the driven wheel 713 through a belt, a pin 714 is fixedly installed at one side opposite to the driven wheel 713, the bearing seat 712 is movably connected with the driven wheel 713 through a roller, a bearing matched, pin 714's surface swing joint has movable rod 715, movable rod 715's bottom fixed mounting has sword groove fixing base 716, the top fixed mounting of sword groove fixing base 716 has sword groove 717, the hole with pin 714 looks adaptation is seted up to movable rod 715's inside, and follow driving wheel 713 passes through pin 714, movable rod 715 and sword groove fixing base 716 swing joint, through thread cutting mechanism 7 that sets up between presser foot board 6 and faller 701, make the device can get rid of the end of a thread that processing produced after accomplishing the processing, the process of follow-up pruning has been saved, production cost has fallen at the bottom, the quality of product has been improved simultaneously, avoid the product nest-like clew of thread to appear, the aesthetic measure of sewing material has been improved.

The electrical components presented in the document are all electrically connected with an external master controller and 220V mains, and the master controller can be a conventional known device controlled by a computer or the like.

The working principle is as follows: when the mechanism is used, the telescopic cylinder 4 enables the mechanism to ascend from the interior of the needle plate 701, the driving wheel 708 and the driven wheel 713 rotate simultaneously under the driving of the motor 706, and the movable rod 715 is internally provided with a hole matched with the pin 714, so that the knife groove 717 ascends while rotating the driven wheel 713, cannot rotate along with the driven wheel, and cannot ascend to the cutter 710 to remove a thread end.

In conclusion, the upper thread cutting mechanism of the flat sewing machine is integrated with the needle plate 701 through the foot pressing plate 6, so that the upper thread cutting mechanism can descend into the needle plate 701 when partially working, normal work of the flat sewing machine cannot be influenced, and meanwhile, the lifting mechanism is simple in structure and easy to realize, is the prior art, has low requirements on personnel, and meets the requirements of modern production.

And this flush joint machine's facial line thread cutting mechanism through the thread cutting mechanism 7 that sets up between presser foot 6 and faller 701 for the device can get rid of the end of a thread that processing produced after accomplishing the processing, has saved the process of follow-up pruning, has fallen production cost, has improved the quality of product simultaneously, avoids the nest shape line group to appear in the product, has improved the aesthetic measure of seam material.

Claims (6)

1. The utility model provides a flush joint machine's facial line thread cutting mechanism, includes aircraft nose (1), stitches needle mechanism (2), presses sole dead lever (3), telescopic cylinder (4), connecting block (5), presses sole (6) and thread cutting mechanism (7), its characterized in that: the sewing needle mechanism (2) is fixedly installed at the bottom of the machine head (1), a foot pressing plate fixing rod (3) is arranged on the left side of the sewing needle mechanism (2), a telescopic cylinder (4) is fixedly installed inside the foot pressing plate fixing rod (3), a connecting block (5) is fixedly installed at the bottom of the telescopic cylinder (4), a foot pressing plate (6) is fixedly installed at the bottom of the connecting block (5), and a thread cutting mechanism (7) is arranged at the bottom of the foot pressing plate (6);

the thread cutting mechanism (7) comprises a needle plate (701), an expansion link (702), a fixing plate (703), a limiting block (704), a shield (705), a motor (706), a rotating shaft (707), a driving wheel (708), a cutter fixing rod (709), a cutter (710), a vertical plate (711), a bearing seat (712), a driven wheel (713), a pin (714), a movable rod (715), a cutter groove fixing seat (716) and a cutter groove (717), wherein the bottom of the presser foot plate (6) is provided with the needle plate (701), the expansion link (702) is fixedly installed in the needle plate (701), the fixing plate (703) is fixedly installed at the top of the expansion link (702), the limiting block (704) is fixedly installed at the top of the fixing plate (703), the shield (705) is fixedly installed on the right side of the limiting block (704), and the motor (706), a rotating shaft (707) is fixedly installed at the power output end of the motor (706), a driving wheel (708) is fixedly installed on the surface of the rotating shaft (707), a cutter fixing rod (709) is fixedly arranged at the bottom of the shield (705), a cutter (710) is fixedly arranged at the bottom of the cutter fixing rod (709), a vertical plate (711) is fixedly installed at the bottom of the protective cover (705), bearing seats (712) are fixedly installed on one sides opposite to the vertical plate (711), a driven wheel (713) is fixedly arranged on one side opposite to the bearing seat (712), a pin (714) is fixedly arranged on one side opposite to the driven wheel (713), a movable rod (715) is movably connected to the surface of the pin (714), a knife groove fixing seat (716) is fixedly arranged at the bottom of the movable rod (715), the top of the knife groove fixing seat (716) is fixedly provided with a knife groove (717).

2. The upper thread cutting mechanism of a lockstitch sewing machine according to claim 1, characterized in that: the bottom fixed mounting of connecting block (5) has pressure sole (6), presses sole (6) and fixed plate (703) to pass through stopper (704) fixed mounting, and the bottom fixed mounting of fixed plate (703) has telescopic link (702), and six structures as an organic whole.

3. The upper thread cutting mechanism of a lockstitch sewing machine according to claim 1, characterized in that: the left side of the rotating shaft (707) is movably connected with a rotating seat, and the rotating shaft (707) is movably connected with the shield (705) through the rotating seat.

4. The upper thread cutting mechanism of a lockstitch sewing machine according to claim 1, characterized in that: the driving wheel (708) is in transmission connection with the driven wheel (713) through a belt.

5. The upper thread cutting mechanism of a lockstitch sewing machine according to claim 1, characterized in that: the bearing seat (712) is movably connected with the driven wheel (713) through a rolling shaft, a bearing matched with the rolling shaft is fixedly installed inside the bearing seat (712), and the bearing seat (712), the driven wheel (713) and the pin (714) are of an integrated structure.

6. The upper thread cutting mechanism of a lockstitch sewing machine according to claim 1, characterized in that: the movable rod (715) is internally provided with a hole matched with the pin (714), and the driven wheel (713) is movably connected with the cutter groove fixing seat (716) through the pin (714), the movable rod (715) and the cutter groove fixing seat.

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