CN202039197U

CN202039197U - Thread releasing device for sewing machine

Info

Publication number: CN202039197U
Application number: CN2011200624365U
Authority: CN
Inventors: 顾飞龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-03-03
Filing date: 2011-03-03
Publication date: 2011-11-16
Anticipated expiration: 2021-03-03

Abstract

Provided is a thread releasing device for a sewing machine. A combining vertical seat is arranged upon the sew machine body; a pressure plate, crossing both sides of the combining vertical seat, is assembled upon the combining vertical seat, making both sides of the pressure plate in pin joint with both sides of the combining vertical seat; a connection sheet is extended from one side of the pressure plate to joint with a linkage for making the linkage and a power supply assembled; an erect shoe plate is formed at one end of the combining vertical seat; a threading rack is assembled upon the sewing machine body and a space is kept between the threading rack and the combining vertical seat; and a plurality of threading holes are arranged in the threading rack. Therefore, the stitches, via the shoe plate, pass through the threading holes in the threading rack, thus to stretch the stitches in a tight state. When the stitches and the sewing objects are required to cut off after the users do not work on the sewing objects, the power supply of the thread releasing device is driven to make the linkage draw the pressure plate to swing downward and to make the pressure plate and the inserting sheet fall into the space formed by the combining vertical seat and the threading rack. The stitches at the space are pressed downward to cooperate with the thread hooking movement of the thread severing device, thus to achieve the effect of synchronously releasing stitches.

Description

The Sewing machines thread-loosening device

Technical field

The utility model is about a kind of Sewing machines thread-loosening device, refers to a kind of features simple structure especially and is easy to make assembling, the Sewing machines thread-loosening device with high productivity effect.

Background technology

Traditional Sewing machines is one and connects a ground and become a string in succession by the suture that does not cut off as yet when the sewing object, wait make finish some after, cutting off of a part of object that will link to each other by the suture bunchiness again with scissors, thus on constructing very time-consuming consumption worker.The dealer constantly improves through Sewing machines, all be equipped with automatic tangent mechanism on the existing sewing machine, when Sewing machines work at the end, can impose a signal and give electromagnetic valve, allow electromagnetic valve do an action that stretches, improve certain height with presser feet with Sewing machines, then, again by another electromagnetic valve action thread cutting device, plastic cutter pushed away extending sewing-machine foot below, pull so that suture is colluded, more subsequently, by electromagnetic valve plastic cutter is colluded the suture of pulling together with plastic cutter and pull back, the cutting knife by thread cutting device cuts off the suture that retracts again.

Yet, when plastic cutter will collude the suture of pulling and pull back,, can cause plastic cutter to be difficult to suture colluded to pull be pulled to the situation that the cutting knife place cuts off and take place if suture does not keep certain looseness.So, there is the dealer to discuss and formulate in Sewing machines installing thread-loosening device, with the action that cooperates plastic cutter to collude line, simultaneously suture is loosened, cut off to cutting knife so that suture is movable, see also TaiWan, China and announce M248796 number " Sewing machines thread-loosening device and position configuration ", this automatic thread-loosening device comprises a wiring group, one power supply device and interlinked mechanism, this wiring group is disposed at Sewing machines top dorsal part, and be provided with tension disk in wiring group, folder for suture is pulled, this tension disk comprises a stator, one rod member, a plurality of holding pieces, one spring and a lid, this stator has a plurality of perforation, pass for rod member, so that stator is connected in the thread tension bracket top, this holding piece and spring then wore this rod member in addition, be fixed in this rod member with lid at last, yarn is by between holding piece, and the elastic force that utilizes spring is sandwiched between the holding piece, when this spring of compression, holding piece gets final product upper and lower displacement, this wiring group is provided with one again and colludes the line device, this colludes the line device and comprises a supporting seat, one slippage bar, a connection piece, a plurality of line portion and a plurality of fixtures of colluding, this supporting seat has a fixed part, this fixed part is fixed in this coil holder with this supporting seat, and two sides of this supporting seat are provided with at least one through hole, this slippage bar passes this through hole, this connector and this collude line portion, for drawing the yarn of pulling, this colludes line portion and utilizes this fixture to make it be fixed in this slippage bar and can slippage or rotation, and this connector is connected this slippage bar with this trace, interlinked mechanism is connected between the slippage bar and power supply device of wiring group, when implementing, be that first holding piece with its tension disk of wiring group loosens, to unclamp clamping to yarn, when continuing by power supply device drive interlinked mechanism, the slippage bar that this pulling simultaneously is connected with group, so that the yarn of pulling colludes in the line portion of colluding that is connected with group with the slippage bar, yarn is spurred a distance, then, the power supply device will collude line portion pushed home again, at this moment, yarn promptly can produce lax shape, uses with in response to the Sewing machines tangent line time.

This above-mentioned TaiWan, China is announced M248796 number " Sewing machines thread-loosening device and position configuration " though can reach the effect of loosening yarn tension, but the wiring group structure element of its thread-loosening device is various, complicated, not only cause the Sewing machines manufacturing cost significantly to improve, and it is tiny and numerous and diverse during assembling owing to element, so very time-consuming inconvenience in the assembling, so that production efficiency is extremely low, lacks industrial competitiveness.

Therefore, the present inventor is because disappearances such as existing Sewing machines thread-loosening device manufacturing cost height, assembling man-hour is long rely on it for many years in the manufacturing of association area and assisting a ruler in governing a country of design experiences and knowledge, and through clever thought in many ways, grinds and create the utility model.

The utility model content

The purpose of this utility model provides a kind of Sewing machines thread-loosening device, its features simple structure and be easy to make assembling, and have high productivity effect.

In order to achieve the above object, Sewing machines thread-loosening device of the present utility model, be provided with the group stand in sewing machine body, group is established across to the pressing plate of organizing stand two sides on the group stand, these pressing plate two sides are articulated with group stand two sides, extend a connecting piece in pressing plate one side, to establish with the connecting rod winding, connection rod set and power source are connected with group, be formed with the gripper shoe of setting in group stand one end, other is provided with the threading frame at group on sewing machine body, makes the threading frame and organizes stand at a distance of an interval, and set up a plurality of perforation in threading.

Further characteristics of the present utility model are as follows:

Further organize on this pressing plate and be provided with inserted sheet, this inserted sheet is corresponding with the perforation of threading frame;

Further be provided with lockhole on this pressing plate, in addition be provided with long slot bore, be provided with locking part again wearing the long slot bore of inserted sheet in inserted sheet, and with the lockhole of pressing plate interlocking mutually;

This inserted sheet bottom further is concaved with the location division;

This pressing plate further convexes with limited post at the long slot bore place of relative inserted sheet; And

This Sewing machines thread-loosening device is further organized on sewing machine body and is provided with line concentration base, and this line concentration seat is located at the in addition side of group stand with respect to the threading frame, is provided with a plurality of open-works that run through in line concentration base, and this open-work is corresponding with the perforation of threading frame.

Useful technique effect of the present utility model is: suture is by on the gripper shoe, pass the perforation of threading frame again, so that suture is tight shape, when using the sewing object, the user comes to an end, in the time of suture and object must being cut off, drive the power source of thread-loosening device, so that connection rod set pulling pressing plate is toward lower swing, pressing plate and inserted sheet are fallen toward the interval that forms between group stand and threading frame, the suture that will be positioned at this interval down presses, moves with the line that colludes that cooperates thread cutting device, and lax synchronously suture, because the utility model is mainly by line concentration base, the group stand, the element of features simple structure such as pressing plate and threading frame is formed, so cheap for manufacturing cost, and in the assembling very facility save time, in view of the above, can significantly promote the production efficiency of sewing machine body, reach the real benefit that improves industrial competitiveness.In addition because pressing plate is provided with inserted sheet, and the long slot bore that on inserted sheet, is shaped, wear with locking part again, with with pressing plate interlocking mutually, like this can be by the long slot bore of inserted sheet, adjust inserted sheet and stretch out the length of pressing plate, and then reach and adjust the degree that pressing plate and inserted sheet press suture, regulate the effect of the elasticity of suture.

Description of drawings

Fig. 1 is a stereogram of the present utility model;

Fig. 2 is a front view of the present utility model;

Fig. 3 is a local amplification view of the present utility model;

Fig. 4 is user mode figure of the present utility model (one);

Fig. 5 is user mode figure of the present utility model (two).

The specific embodiment

Be the effect that makes technological means of the present utility model and can reach, can have more complete and clearly disclose, below be elaborated as follows to preferred embodiment of the present utility model conjunction with figs.:

At first, see also Fig. 1, shown in Figure 2, be Sewing machines thread-loosening device of the present utility model, formed by line concentration base 1, group stand 2, pressing plate 3 and threading frame 4; Wherein:

This line concentration base 1 is mounted on the sewing machine body 5, and is provided with a plurality of open-works that run through 11 in line concentration base 1;

This organizes stand 2, be mounted on the sewing machine body 5, and to be penetrated with an end face of open-work 11 relative with line concentration base 1, articulates on it with supply plate 3, and group stand 2 is being provided with a gripper shoe 21 of erectting at the end in addition relative with line concentration base 1;

This pressing plate 3, see also shown in Figure 3, it is configured as the plate across group stand 2 two sides, pressing plate 3 two sides are articulated with group stand 2 two sides, be provided with several lockholes 31 in pressing plate 3, other is provided with inserted sheet 32, be provided with long slot bore 321 in inserted sheet 32, wear for locking part 33, with the lockhole 31 of pressing plate 3 interlocking mutually, convex with limited post 34 at long slot bore 321 places of pressing plate 3 relative inserted sheets 32 again in addition again, make inserted sheet 32 relative with the open-work 11 of line concentration base 1, and be arranged with arc location division 322 in inserted sheet 32 bottoms, extend a connecting piece 35 in pressing plate 3 one sides;

This threading frame 4, be to be mounted on the sewing machine body 5, and be positioned at group stand 2 end in addition, with relative with line concentration base 1 and establish, and make threading frame 4 and organize stand 2 at a distance of an interval 41, with the placement that supply plate 3 falls, threading frame 4 is provided with a plurality of perforation 42, and this perforation 42 is relative with the inserted sheet 32 of the open-work 11 of line concentration base 1 and pressing plate 3.

In view of the above, see also shown in Figure 4, when assembling is used, the brace 35 of pressing plate 3 is connected with group with connection rod set 6 one ends, connection rod set 6 is held in addition be mounted on the power source, again open-work 11 one ends of suture by line concentration base 1 are passed toward other end, later, cross the interval 41 of

group stand

2 and 4 formation of threading frame again through the gripper shoe 21 of group stand 2 again, penetrate the perforation 42 of threading frame 4 again and go out, being mounted in the suture needle, and make suture be tight state;

When using Sewing machines sewing object, the user comes to an end, suture must be cut off with object and separate, and the power source promotion plastic cutter that drives thread cutting device stretches out, when pulling suture to collude, the power source of thread-loosening device assembling is synchronization action pulling connection rod set 6 also, so that the pressing plate 3 that is connected with group with connection rod set 6 be subjected to connection rod set 6 pulling and toward lower swing, in hereat, pressing plate 3 and the interlocking inserted sheet 32 on it is that the interval 41 toward group stand 2 and 4 formation of threading frame falls, the suture that arc location division 322 correspondences of inserted sheet 32 bottoms will be positioned at these 41 places, interval down presses, and makes suture in

gripper shoe

21,4 on location division 322 and threading frame form the V-arrangement shape;

Then, see also shown in Figure 5, the power source action of thread-loosening device assembling pushes back connection rod set 6, so that pressing plate 3 homings that are connected with group with connection rod set 6, and make the inserted sheet 32 that is mounted on pressing plate 3 away from pressing to suture, at this moment, suture promptly is a lax length in reserve shape, and thus, the plastic cutter of thread cutting device just can successfully collude the suture that is relaxed state to draw back and be pulled to the cutting knife place, so that suture is cut off, reach the smooth and easy effect of cutting apart of the object that makes suture and sewing.

Moreover, when the lax pre-Office Copy of user's desire adjustment suture out of the ordinary, can loosen locking part 33, and utilize the long slot bore 321 of inserted sheet 32, stretch out the length of pressing plate 3 to regulate inserted sheet 32, then again with inserted sheet 32 lockings, so, when inserted sheet 32 is stretched out the contraction in length of pressing plate 3, it is few more that inserted sheet 32 falls the degree that presses on suture, and at this moment, suture is the state that is than length in reserve, otherwise, when the length that makes inserted sheet 32 stretch out pressing plate 3 increased, inserted sheet 32 pressed in the degree of suture big more, and the pre-Office Copy that suture is lax is long more, according to this, to reach the effect of regulating suture length in reserve out of the ordinary.

And from the above, thread-loosening device of the present utility model only is made up of elements such as line concentration base 1, group stand 2, pressing plate 3 and threading framves 4, and the features simple structure of each element is easy to assembling, so manufacturing cost is cheap relatively, and assemble and effectively to shorten man-hour, significantly to promote the efficient of the utility model and sewing machine body 5 Assembling Production, reach the real benefit that improves industrial competitiveness.

By said structure and embodiment as can be known, the utility model is to have following advantage:

1. Sewing machines thread-loosening device of the present utility model mainly is made up of the element of features simple structure such as group stand and pressing plate, so facility saves time in the assembling, can significantly promote the efficient with the sewing machine body Assembling Production, reaches raising industrial competitiveness real benefit.

2. Sewing machines thread-loosening device of the present utility model mainly is made of the element of features simple structure such as group stand and pressing plate, is easy to the manufacturing, with low cost, by this, helps the lifting of industrial competitiveness.

3. Sewing machines thread-loosening device of the present utility model is that the inserted sheet in pressing plate is provided with long slot bore, with with pressing plate interlocking mutually, by this, can be by the long slot bore of inserted sheet, adjust the length that inserted sheet stretches out pressing plate, and then reach and adjust the degree that pressing plate and inserted sheet press suture, to reach the lax pre-Office Copy of adjusting suture out of the ordinary.

In sum, the utility model embodiment really can reach expect effect, its disclosed concrete structure again, not only be not seen in like product, also be not disclosed in application before, really meet the regulation and the requirement of Patent Law fully, the application of the utility model patent is now proposed in accordance with the law, earnestly ask and give examination, and grant quasi patent, then the true feeling moral just.

Claims

1. Sewing machines thread-loosening device, it is characterized in that, be provided with group stand (2) in sewing machine body (5), going up group in group stand (2) establishes across to the pressing plate of organizing stand (2) two sides (3), these pressing plate (3) two sides are articulated with group stand (2) two sides, extend a connecting piece (35) in pressing plate (3) one sides, to connect with connection rod set (6) one ends, connection rod set (6) end in addition is connected with group with power source, on group stand (2), be formed with the gripper shoe (21) of setting again, upward organize in sewing machine body (5) in addition and be provided with threading frame (4), threading frame (4) and group stand (2) are provided with a plurality of perforation (42) at a distance of an interval (41) in threading frame (4).

2. according to the described Sewing machines thread-loosening device of claim 1, it is characterized in that this pressing plate (3) is gone up further to organize and is provided with inserted sheet (32), this inserted sheet (32) is corresponding with the perforation (42) of threading frame (4).

3. according to the described Sewing machines thread-loosening device of claim 2, it is characterized in that, be further to be provided with lockhole (31) on this pressing plate (3), be provided with long slot bore (321) in inserted sheet (32) in addition, be provided with the long slot bore (321) of locking part (33) again to wear inserted sheet (32), and with the lockhole (31) of pressing plate (3) interlocking mutually.

4. according to claim 2 or 3 described Sewing machines thread-loosening devices, it is characterized in that this inserted sheet (32) bottom further is concaved with location division (322).

5. according to the described Sewing machines thread-loosening device of claim 3, it is characterized in that this pressing plate (3) further locates to convex with limited post (34) at the long slot bore (321) of relative inserted sheet (32).

6. according to the described Sewing machines thread-loosening device of claim 1, it is characterized in that, this Sewing machines thread-loosening device is further gone up group in sewing machine body (5) and is provided with line concentration base (1), this line concentration base (1) position is located at the in addition side of group stand (2) with respect to threading frame (4), be provided with a plurality of open-works that run through (11) in line concentration base (1), this open-work (11) is corresponding with the perforation (42) of threading frame (4).