CN213739989U

CN213739989U - Sewing machine that broken string shut down

Info

Publication number: CN213739989U
Application number: CN202022652299.2U
Authority: CN
Inventors: 王天亮
Original assignee: Changxing Miaomiao Clothing Co ltd
Current assignee: Changxing Miaomiao Clothing Co ltd
Priority date: 2020-11-16
Filing date: 2020-11-16
Publication date: 2021-07-20
Anticipated expiration: 2030-11-16

Abstract

The utility model provides a sewing machine for stopping when thread breakage occurs, which comprises a sewing machine body, a working circuit for driving the sewing machine to work, and a thread breakage stopping mechanism for controlling the working circuit to open and close; the broken string shutdown mechanism includes: the device comprises a shell, a mounting rack and a vertical rod; the opposite side surfaces of the shell are provided with wire passing holes; the vertical rod is provided with an opening; a rotating wheel is rotatably arranged in the open hole; the mounting rack is arranged in the shell, and a left contact piece and a right contact piece are arranged on the end surface of the mounting rack at intervals; one end of the vertical rod penetrates through the mounting frame and is provided with a conducting strip which is in contact with the left contact piece and the right contact piece; when the vertical rod moves, the conductive sheet can be driven to move together and be separated from the left contact sheet and the right contact sheet, so that a control working circuit is disconnected; the utility model discloses produce the traction to the montant by the suture and realize controlling the conducting strip, through adopting the contact response broken string, realized the control to sewing machine body operation or outage, detect the high and simple structure of precision, be convenient for control.

Description

Sewing machine that broken string shut down

Technical Field

The utility model relates to a sewing machine machinery technical field specifically is a sewing machine that broken string shut down.

Background

The sewing machine is essential equipment in the clothing manufacturing process, can take place the broken string in the sewing machine use, can take place the empty needle at the broken string or the in-process that the operator took place the broken string, because the empty needle can lead to the sewing material to be pierced by the needle machine, leaves the pinhole, nevertheless because down coat, leather it does not allow the empty needle to appear at the sewing in-process, consequently need be equipped with on the sewing machine and can in time monitor the broken string and order about the device of shut down.

The existing sewing machine thread breakage detection device is mainly divided into two types: one is mechanical structure detection, whether the thread is broken or not is detected by measuring the tension of the thread, and most of the existing mechanical structure type detection devices have the defect of complicated structure; the other type is that an optical sensor is adopted to directly detect the suture, but the optical sensor is easily affected by oil stains and fluff, and the detection mode often has a false alarm phenomenon. Accordingly, there is a need for a device that has a simple structure and can effectively detect a thread breakage of a sewing machine.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a sewing machine that broken string shut down has solved the big and complicated technical problem of structure of its broken string monitoring error of detection device who exists among the background art.

In order to achieve the above object, the utility model provides a following technical scheme: a sewing machine for stopping when a thread is broken comprises a sewing machine body, a working circuit for driving the sewing machine to work and a thread breaking stopping mechanism for controlling the opening and closing of the working circuit; the broken string shutdown mechanism includes: the device comprises a shell, a mounting rack and a vertical rod; thread passing holes are formed in the opposite side faces of the shell, and the suture passes through the thread passing holes; the vertical rod is provided with an opening; the rotary wheel is rotatably arranged in the opening and is used for assisting the suture to pass through the vertical rod; the mounting rack is arranged in the shell, and a left contact piece and a right contact piece are arranged on the end surface of the mounting rack at intervals; one end of the vertical rod penetrates through the mounting frame and is provided with a conducting strip which is in contact with the left contact piece and the right contact piece; when the vertical rod moves, the conductive piece can be driven to move together and be separated from the left contact piece and the right contact piece, so that a control working circuit is disconnected.

By adopting the technical scheme, firstly, a thread is required to penetrate through the vertical rod, the thread generates the attraction force on the vertical rod, when the thread is not broken, the conducting strip arranged on the vertical rod is contacted with the left and right contact pieces, and the sewing machine body is communicated with the working circuit so as to realize the normal operation of the sewing machine; after the suture fracture, the montant loses the traction of suture, and the conducting strip separates with left and right contact to disconnection working circuit, sewing machine body bring to rest, the utility model discloses can realize having a power failure immediately after the broken string for sewing machine body bring to rest, the condition of having avoided the empty needle takes place, and simple structure is convenient for operate.

Further, be fixed with the spring holder in shells inner wall's bottom, be equipped with the spring in the spring holder, the montant is connected with the spring and compression spring for conducting strip and left contact, the laminating of right contact homogeneous phase, and have the clearance between conducting strip, mounting bracket and the shells inner wall, avoid contacting between the left and right contact on conducting strip and the mounting bracket, can't realize the outage operation.

As a preferred scheme of the utility model is, left contact and right contact set up on the terminal surface of mounting bracket towards the casing bottom, produce ascending pulling force to the montant by the suture that passes the rotation wheel for left and right contact on conducting strip and the mounting bracket contacts, and is equipped with the clearance between conducting strip, mounting bracket all and shells inner wall's the bottom.

Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model discloses by the traction effect that the suture produced the montant, contact or separate between control conducting strip and sewing machine body, the working circuit, through adopting the technical scheme of above-mentioned contact response broken string, realized the control to sewing machine body operation or outage, detect the precision height and simple structure, be convenient for control.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic diagram of a circuit diagram reference structure of the present invention;

fig. 3 is a schematic structural diagram of a first embodiment of the present invention;

fig. 4 is a schematic structural diagram of a second embodiment of the present invention;

fig. 5 is a schematic structural view of the vertical rod of the present invention;

in the figure: 1. an operation table; 2. a sewing machine body; 3. mounting a plate; 4. a wire break shutdown mechanism; 41. a housing; 411. a wire passing hole; 412. an auxiliary wheel; 413. a through hole; 42. a conductive sheet; 43. a left contact blade; 44. a right contact blade; 45. a mounting frame; 46. a rotating wheel; 47. a vertical rod; 471. opening a hole; 48. a spring seat; 481. a spring; 5. a bobbin; 6. sewing; 7. and an operating circuit.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

As shown in fig. 1-5, a sewing machine for stopping a thread breakage comprises a sewing machine body 2, a working circuit 7 for driving the sewing machine to work (wherein the working circuit 7 is formed by an external 220v power supply and a power supply connecting line), and a thread breakage stopping mechanism 4 for controlling the opening and closing of the working circuit 7; specifically, the wire breakage shutdown mechanism 4 includes: a housing 41, a mounting bracket 45 and a vertical rod 47; the left side and the right side of the shell 41 are symmetrically provided with thread through holes 411, so that the thread 6 can directly pass through the shell 41; the vertical rod 47 is provided with an opening 471; the opening 471 is rotatably provided with a rotating wheel 46, the rotating wheel 46 and the thread passing hole 411 are positioned at the same horizontal extension position, so that the suture 6 can conveniently pass through the rotating wheel 46 from the thread passing hole 411 at one side and pass through the thread passing hole 411 at the other side, and the rotating wheel 46 can protect the suture 6; mounting bracket 45 sets up inside casing 41, and the lateral wall of mounting bracket 45 is to closing on casing 41 inner wall, spaced on the terminal surface of mounting bracket 45 inlays and is equipped with left contact 43 and right contact 44 (as shown in fig. 2, the both ends disconnection of working circuit 7, left contact 43 is connected to one end, right contact 44 is connected to the other end), the through-hole 413 has been seted up in the mounting bracket 45, the one end of montant 47 runs through-hole 413 and installs conducting strip 42, conducting strip 42 can with left contact 43, right contact 44 contacts, when montant 47 keeps away from mounting bracket 45 in through-hole 413 and removes, can drive conducting strip 42 and remove in the lump, conducting strip 42 and left contact 43, right contact 44 separation, thereby disconnection control working circuit 7.

Example 1: as shown in fig. 3, a spring seat 48 is fixed at the bottom of the inner wall of the housing 41, a spring 481 is arranged in the spring seat 48, the vertical rod 47 is connected with the spring 481 and compresses the spring 481, the spring 481 generates vertical upward elastic force on the vertical rod 47, and a gap exists between the conductive sheet 42, the mounting rack 45 and the inner wall of the housing 41, because the setting height of the rotating wheel 46 is higher than the height of the thread 6 passing through the rotating wheel 46, when the thread 6 passes through the rotating wheel 46, the vertical rod 47 can be pressed down, then the spring 481 is compressed, the conductive sheet 42 is contacted with the left contact sheet 43 and the right contact sheet 44, and the sewing machine body 2 is communicated with the working circuit 7; when the thread 6 is broken, the spring 481 is reset, the vertical rod 47 is pushed to ascend, the conducting strip 42 is driven to displace and is separated from the left contact piece 43 and the right contact piece 44, and the working circuit 7 is disconnected.

Example 2: different from the embodiment 1, the embodiment does not need to provide the spring 481, the working circuit 7 can be disconnected by gravity, specifically, the left contact piece 43 and the right contact piece 44 are arranged on the end surface of the mounting frame 45 facing the bottom of the inner wall of the shell 41, the conducting piece 42 is arranged between the bottom of the shell 41 and the mounting frame 45, and gaps are arranged between the conducting piece 42 and the mounting frame 45 and the bottom of the inner wall of the shell 41, because the height of the rotating wheel 46 is lower than the height of the thread 6 passing through the rotating wheel 46, when the thread 6 passes through the rotating wheel 46, the vertical rod 47 is pulled upwards, and then the conducting piece 42 is contacted with the left contact piece 43 and the right contact piece 44, so that the sewing machine body 2 is communicated with the working circuit 7; when the thread 6 is broken, the vertical rod 47 falls down to drive the conducting strip 42 to displace and separate from the left contact piece 43 and the right contact piece 44, and the working circuit 7 is disconnected.

As shown in fig. 3 and 4, an auxiliary wheel 412 is rotatably provided inside the thread passing hole 411 to reduce abrasion of the thread 6.

As shown in fig. 1, in order to facilitate the clear understanding of the installation position of the device, an operation table 1 is arranged below a sewing machine body 2; the top of sewing machine body 2 is fixed with bobbin 5, installs mounting panel 3 between sewing machine body 2 and bobbin 5, and broken string stop gear 4 sets up on mounting panel 3, and the stitch 6 on the bobbin 5 of being convenient for inserts on sewing machine body 2 after passing broken string stop gear 4.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims

1. A sewing machine for stopping a broken thread comprises a sewing machine body (2) and a working circuit (7) for driving the sewing machine to work, and is characterized by further comprising a broken thread stopping mechanism (4) for controlling the working circuit (7) to open and close; the wire break shutdown mechanism (4) comprises: the device comprises a shell (41), a mounting rack (45) and a vertical rod (47); a wire passing hole (411) is formed in the opposite side face of the shell (41); the vertical rod (47) is provided with an opening (471); a rotating wheel (46) is rotatably arranged in the opening hole (471); the mounting rack (45) is arranged inside the shell (41), and a left contact piece (43) and a right contact piece (44) are arranged on the end face of the mounting rack (45) at intervals; one end of the vertical rod (47) penetrates through the mounting frame (45) and is provided with a conducting strip (42), and the conducting strip (42) is in contact with the left contact piece (43) and the right contact piece (44); when the vertical rod (47) moves, the energy-driven conductive sheet (42) moves together and is separated from the left contact piece (43) and the right contact piece (44), thereby disconnecting the control operating circuit (7).

2. The sewing machine for thread breakage and stop according to claim 1, characterized in that a spring seat (48) is fixed at the bottom of the inner wall of the housing (41), a spring (481) is arranged in the spring seat (48), the vertical rod (47) is connected with the spring (481) and compresses the spring (481), and gaps exist among the conductive sheet (42), the mounting rack (45) and the inner wall of the housing (41).

3. The sewing machine of claim 1, wherein the left contact piece (43) and the right contact piece (44) are disposed on an end surface of the mounting frame (45) facing the bottom of the housing (41), and a gap is formed between the conductive piece (42) and the mounting frame (45) and the bottom of the inner wall of the housing (41).

4. A thread break stop sewing machine according to claim 2 or 3, wherein an auxiliary wheel (412) is rotatably provided inside the thread passing hole (411).

5. A thread break stop sewing machine according to claim 4, characterized in that an operating table (1) is provided below the sewing machine body (2); the top of sewing machine body (2) is fixed with bobbin (5) install mounting panel (3) between sewing machine body (2) and bobbin (5), broken string shutdown mechanism (4) set up in on mounting panel (3).