CN215209963U

CN215209963U - Sewing machine with empty needle prevention device

Info

Publication number: CN215209963U
Application number: CN202120746520.2U
Authority: CN
Inventors: 包心美
Original assignee: Huai'an Dean Clothing Co ltd
Current assignee: Huai'an Dean Clothing Co ltd
Priority date: 2021-04-13
Filing date: 2021-04-13
Publication date: 2021-12-17
Anticipated expiration: 2031-04-13

Abstract

The utility model relates to a sewing machine technical field just discloses a sewing machine with air defense needle device, including the workstation. This sewing machine with prevent empty needle device, the fixed first reset spring of inner chamber through the cavity pole, and at the bottom fixed rack of first reset spring, and at the fixed small motor of inner chamber of sewing machine main part, and at the fixed pivot of one side of small motor, and at the fixed half gear in the outside of pivot, make half gear and rack toothing, and at the fixed second reset spring of sewing mechanism's both sides, and at the fixed movable block in the top of second reset spring, and set up the through-hole at the top of movable block, make the suture run-through hole, when starting small motor, make the pivot drive the rotation of half gear, and make the rack descend, make the bottom and the movable block of suture descend this moment, thereby be connected with enough next sewing's suture surplus on the sewing mechanism, thereby reached and prevented to cause the effect of broken string because of empty needle.

Description

Sewing machine with empty needle prevention device

Technical Field

The utility model relates to a sewing machine technical field specifically is a sewing machine with prevent empty needle device.

Background

The sewing machine is a machine which uses one or more sewing threads to form one or more stitches on a sewing material to enable one or more layers of the sewing material to be interwoven or sewn, the sewing machine can be used for sewing fabrics such as cotton, hemp, silk, wool, artificial fiber and the like and products such as leather, plastic, paper and the like, and the sewn stitches are neat, beautiful, flat and firm, the sewing speed is high, and the use is simple and convenient. The derived artistic forms such as hand-push embroidery and computer embroidery are that the working principle of the sewing machine is roughly as follows: the sewing machine is started by stepping down a pedal switch with feet, the reciprocating motion of a cloth moving rack in a cloth moving rack groove is utilized, an operator pushes the sewing machine by hand, meanwhile, a bobbin carrying an upper thread is connected and locked with a bottom thread carried by a bobbin by a machine needle, and the sewing material is pushed in the direction required to be sewn, so that the sewing is completed.

Because the stitch formation of the existing lockstitch sewing machine is carried out in the cloth, and no thread identification and knitting device is arranged on the needle plate of the sewing machine like overedges, flat seams and the like, the thread can be broken immediately after the cloth is separated from a machine needle and a presser foot, and the time is wasted by the operation staff due to thread breakage and threading, thereby influencing the working progress.

SUMMERY OF THE UTILITY MODEL

To the deficiency of the prior art, the utility model provides a sewing machine with prevent empty needle device possesses the advantage that prevents to cause the broken string because of empty needle, has solved the problem that proposes among the above-mentioned background art.

The utility model provides a following technical scheme: a sewing machine with an empty needle prevention device comprises a workbench, wherein a mounting plate is arranged at the top of the workbench, a sewing machine main body is fixedly mounted in the middle of the top of the mounting plate, a thread feeding mechanism is fixedly mounted at the top of the sewing machine main body close to the right side, a sewing mechanism is fixedly mounted at the bottom of the sewing machine main body close to the left side, a hollow rod is fixedly mounted at the top of an inner cavity of the sewing machine main body, a first reset spring is fixedly mounted at the top of the inner cavity of the hollow rod, a rack is fixedly connected to the bottom end of the first reset spring, a small motor is fixedly mounted at one side of the inner cavity of the sewing machine main body, a half gear is fixedly connected to one end of the small motor and meshed with the rack, sliding grooves are respectively formed in two sides of the inner cavity of the sewing machine main body, a second reset spring is fixedly mounted to the inner cavities of the two sliding grooves, and a movable block is fixedly connected to the top end of the second reset spring, the middle of the top of the movable block is provided with a through hole, the left side of the thread feeding mechanism is fixedly connected with a suture, and the bottom end of the suture penetrates through the inside of the through hole.

Preferably, the bottom of the workbench is fixedly provided with supporting legs at positions close to four corners, and the bottom of each supporting leg is fixedly provided with a base.

Preferably, the top fixed mounting of workstation has the hinge, the mounting panel passes through hinge and workstation swing joint.

Preferably, the inner cavity of the sewing machine main body is fixedly provided with two winding posts, and the two winding posts are movably connected with a suture.

Preferably, the bottom end of the rack is positioned right above the movable block, and the length value of the rack is larger than the inner diameter value of the through hole.

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

1. the sewing machine with the empty needle preventing device fixes the hollow rod through the top of the inner cavity of the sewing machine main body, a first return spring is fixed in the inner cavity of the hollow rod, a rack is fixed at the bottom of the first return spring, a small motor is fixed in the inner cavity of the sewing machine main body, a rotating shaft is fixed on one side of the small motor, a half gear is fixed on the outer side of the rotating shaft, so that the half gear is meshed with the rack, second return springs are fixed on two sides of the sewing mechanism, a movable block is fixed at the top of the second return spring, and a through hole is arranged at the top of the movable block, so that the suture passes through the through hole, when the small-sized motor is started, the rotating shaft drives the half gear to rotate, the rack descends, the bottom end of the suture line and the movable block descend, therefore, the sewing mechanism is connected with enough sewing thread allowance for next sewing, thereby achieving the effect of preventing thread breakage caused by empty needles.

2. The sewing machine with the empty needle preventing device is characterized in that a hollow rod is fixed at the top of an inner cavity of a sewing machine main body, a first return spring is fixed in the inner cavity of the hollow rod, a rack is fixed at the bottom of the first return spring, a small motor is fixed in the inner cavity of the sewing machine main body, a rotating shaft is fixed on one side of the small motor, a half gear is fixed on the outer side of the rotating shaft, the half gear is meshed with the rack, a second return spring is fixed on two sides of a sewing mechanism, a movable block is fixed at the top of the second return spring, a through hole is formed in the top of the movable block, a suture penetrates through the through hole, when the small motor is started, the rotating shaft drives the half gear to rotate, when the half gear rotates until teeth are contacted with the rack, the rack descends, the first return spring stretches, when the half gear rotates until the teeth are separated from the rack, the first return spring resets, the rack is lifted, so that the effect of remaining the suture margin at the next time can be performed.

Drawings

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

FIG. 2 is a left side view of the sewing machine main body of the present invention;

FIG. 3 is an enlarged schematic view of the structure at A of FIG. 1 according to the present invention;

FIG. 4 is an enlarged schematic view of the structure of FIG. 1 at B according to the present invention;

fig. 5 is a schematic view of the half gear structure of the present invention.

In the figure: 1. a work table; 2. a sewing mechanism; 3. sewing; 4. a winding post; 5. a wire feeding mechanism; 6. a sewing machine main body; 7. mounting a plate; 8. supporting legs; 9. a base; 10. a rotating shaft; 11. a hollow shaft; 12. a rack; 13. a small-sized motor; 14. a half gear; 15. a first return spring; 16. a movable block; 17. a chute; 18. a through hole; 19. a second return spring.

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. 1-5, a sewing machine with an empty needle prevention device comprises a workbench 1, a mounting plate 7 is arranged at the top of the workbench 1, a sewing machine main body 6 is fixedly arranged in the middle of the top of the mounting plate 7, a thread feeding mechanism 5 is fixedly arranged at the top of the sewing machine main body 6 close to the right side, a sewing mechanism 2 is fixedly arranged at the bottom of the sewing machine main body 6 close to the left side, a hollow rod 11 is fixedly arranged at the top of the inner cavity of the sewing machine main body 6, a first return spring 15 is fixedly arranged at the top of the inner cavity of the hollow rod 11, a rack 12 is fixedly connected to the bottom end of the first return spring 15, a small motor 13 is fixedly arranged at one side of the inner cavity of the sewing machine main body 6, a half gear 14 is fixedly connected to one end of the small motor 13, the half gear 14 is meshed with the rack 12, sliding grooves 17 are arranged at both sides of the inner cavity of the sewing machine 2, and second return springs 19 are fixedly arranged in the inner cavities of the two sliding grooves 17, a movable block 16 is fixedly connected to the top end of the second return spring 19, a through hole 18 is formed in the middle of the top of the movable block 16, a suture 3 is fixedly connected to the left side of the thread feeding mechanism 5, the bottom end of the suture 3 penetrates through the inside of the through hole 18, a hollow rod 11 is fixed to the top of an inner cavity of the sewing machine body 6, a first return spring 15 is fixed to the inner cavity of the hollow rod 11, a rack 12 is fixed to the bottom of the first return spring 15, a small motor 13 is fixed to the inner cavity of the sewing machine body 6, a rotating shaft 10 is fixed to one side of the small motor 13, a half gear 14 is fixed to the outer side of the rotating shaft 10, the half gear 14 is meshed with the rack 12, second return springs 19 are fixed to both sides of the sewing machine 2, the movable block 16 is fixed to the top of the second return spring 19, a through hole 18 is formed in the top of the movable block 16, the suture 3 penetrates through the through hole 18, when the small motor 13 is started, so that the rotating shaft 10 drives the half gear 14 to rotate, the rack 12 descends, and at the same time, the bottom end of the thread 3 and the movable block 16 descend, so that the sewing mechanism 2 is connected with a thread allowance enough for next sewing, thereby achieving the effect of preventing thread breakage caused by an empty needle, fixing the hollow rod 11 at the top of the inner cavity of the sewing machine main body 6, fixing the first return spring 15 in the inner cavity of the hollow rod 11, fixing the rack 12 at the bottom of the first return spring 15, fixing the small motor 13 in the inner cavity of the sewing machine main body 6, fixing the rotating shaft 10 at one side of the small motor 13, fixing the half gear 14 at the outer side of the rotating shaft 10, so that the half gear 14 is meshed with the rack 12, fixing the second return springs 19 at both sides of the sewing mechanism 2, fixing the movable block 16 at the top of the second return spring 19, and forming a through hole 18 at the top of the movable block 16, so that the suture 3 runs through the through hole 18, when the small motor 13 is started, the rotating shaft 10 drives the half gear 14 to rotate, the rack 12 descends, the bottom end of the suture 3 and the movable block 16 descend at the moment, the suture allowance enough for next sewing is connected to the sewing mechanism 2, and the effect of preventing the thread breakage caused by the empty needle is achieved.

Wherein, the bottom of workstation 1 is close to the equal fixed mounting in four corners position and is had supporting legs 8, and the bottom fixed mounting of supporting legs 8 has base 9, plays the effect of support to workstation 1, prevents that 6 during operation of sewing machine main part from producing and rocking.

Wherein, the top of the workbench 1 is fixedly provided with a hinge, the mounting plate 7 is movably connected with the workbench 1 through the hinge, when the sewing machine body 6 is idle, the mounting plate 7 can be rotated to fold the sewing machine body 6, thereby protecting the sewing machine body 6.

Wherein, the inner chamber fixed mounting of sewing machine main part 6 has two wrapping posts 4, and two wrapping posts 4 all with suture 3 swing joint, prevent that the condition of knoing from appearing in suture 3.

Wherein, the bottom of rack 12 is located directly over movable block 16, and the length value of rack 12 is greater than the internal diameter value of through-hole 18 for rack 12 can drive suture 3 and descend.

The working principle is as follows: when the sewing machine with the empty needle prevention device is used, firstly, the sewing machine is started, the thread feeding mechanism 5 is controlled to pull the thread 3, so that the bottom end of the thread 3 passes through the through hole 18 and is positioned below the movable block 16, then the small-sized motor 13 is started to drive the rotating shaft 10 to rotate and drive the half gear 14 to rotate, when the teeth of the half gear 14 are brought into contact with the rack 12, the rack 12 is moved downward, at which time the first return spring 15 is stretched, then, the lower end of the suture thread 3 and the movable block 16 are moved downward, at which time the second return springs 19 at both sides are compressed, when the half gear 14 rotates until the teeth are separated from the rack 12, the second return spring 19 is reset at the moment, the movable block 16 is driven to ascend, meanwhile, the first return spring 15 is reset, the rack 12 is driven to ascend, so that the sewing thread 3 attached to the sewing mechanism 2 leaves a margin enough for the next sewing of the sewing mechanism 2.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A sewing machine with an anti-empty needle device, comprising a worktable (1), characterized in that: the top of workstation (1) is equipped with mounting panel (7), fixed mounting has sewing machine main part (6) in the middle of the top of mounting panel (7), the top of sewing machine main part (6) is close to right side fixed mounting and send line mechanism (5), the bottom of sewing machine main part (6) is close to left side fixed mounting and has sewing mechanism (2), the inner chamber top fixed mounting of sewing machine main part (6) has well hollow rod (11), the inner chamber top fixed mounting of well hollow rod (11) has first reset spring (15), the bottom fixedly connected with rack (12) of first reset spring (15), inner chamber one side fixed mounting of sewing machine main part (6) has small motor (13), the one end fixedly connected with half gear (14) of small motor (13), half gear (14) and rack (12) meshing, spout (17) have all been seted up to the inner chamber both sides of sewing mechanism (2), two the equal fixed mounting in inner chamber of spout (17) has second reset spring (19), the top fixedly connected with movable block (16) of second reset spring (19), through-hole (18) have been seted up in the middle of the top of movable block (16), the left side fixedly connected with suture (3) of sending line mechanism (5), the inside of through-hole (18) is passed to the bottom of suture (3).

2. A sewing machine with an anti-empty needle device according to claim 1, characterized in that: the bottom of the workbench (1) is close to four corners and is fixedly provided with supporting legs (8), and the bottom of the supporting legs (8) is fixedly provided with a base (9).

3. A sewing machine with an anti-empty needle device according to claim 1, characterized in that: the top fixed mounting of workstation (1) has the hinge, mounting panel (7) pass through hinge and workstation (1) swing joint.

4. A sewing machine with an anti-empty needle device according to claim 1, characterized in that: the inner cavity of the sewing machine main body (6) is fixedly provided with two winding posts (4), and the two winding posts (4) are movably connected with the suture (3).

5. A sewing machine with an anti-empty needle device according to claim 1, characterized in that: the bottom end of the rack (12) is positioned right above the movable block (16), and the length value of the rack (12) is larger than the inner diameter value of the through hole (18).