CN201292453Y

CN201292453Y - Electric-drive transmission mechanism for lower thread cutting device of sewing machine

Info

Publication number: CN201292453Y
Application number: CNU2008201397598U
Authority: CN
Inventors: 林培嘉
Original assignee: GAOLIN CO Ltd
Current assignee: GAOLIN CO Ltd; Kaulin Manufacturing Co Ltd
Priority date: 2008-10-24
Filing date: 2008-10-24
Publication date: 2009-08-19
Anticipated expiration: 2018-10-24

Abstract

The utility model discloses an electrically driven operating mechanism used for a lower line cutting device of a sewing machine, which comprises an electromagnetic driver, a connection component, a mounted plate, a rack truck, an interlock rod and a restoring elastic body. The electromagnetic driver is fixed at one side of a machine body of the sewing machine and comprises a coil assembly and a driving axle, the connection component is connected with the lower line cutting device and the driving axle, the mounted plate is fixed on the electromagnetic driver and is provided with a punch hole, the rack truck is fixedly connected with the driving axle and is provided with an axle hole which corresponds to the punch hole, the interlock rod penetrates through the punch hole and is fixed in the axle hole, the restoring elastic body is sleeved outside the interlock rod and clamped between the mounted plate and the end part of the interlock rod so as to control the restoration of the working driving axle, thereby the electrically driven operating mechanism can enhance the stability of the operation and lower the noise.

Description

Be used for that the electricity of thread cutting device drives the formula transmission mechanism under the Sewing machines

Technical field

The utility model relates to a kind of transmission mechanism, relates in particular to a kind ofly to be used for that the electricity of thread cutting device drives the formula transmission mechanism under the Sewing machines.

Background technology

The existing transmission mechanism that is used for thread cutting device under the Sewing machines, the main assemblies such as an air impeller, a plurality of tracheae, a plurality of joints that are communicated with driver and tracheae and electromagnetic valve that are equipped with at a Sewing machines body back side, end by air impeller is connected with the swing arm of following thread cutting device, and electromagnetic valve moves back and forth as linearity and drives down thread cutting device opposite joint line and shear in order to the control air impeller.

Yet, the existing transmission mechanism that is used for thread cutting device under the Sewing machines, make shear action though have the following thread cutting device of driving, but on using, reality still has the following problems point, because general small-sized or medium-sized clothing is made factory, major part all is not equipped with gas compressor, must additionally purchase gas compressor and other relevant attached outfit again in order to use aforementioned transmission mechanism, whole use cost is significantly increased, and problems such as people's noise and start instability also disturbed generation by these gas compressors and attached when being provided in start; Really remain to be improved.

Summary of the invention

A purpose of the present utility model is to provide a kind of and is used for that the electricity of thread cutting device drives the formula transmission mechanism under the Sewing machines, and it can improve the stability of start and reduce noise.

To achieve the above object, the utility model provides a kind of and is used for that the electricity of thread cutting device drives the formula transmission mechanism under the Sewing machines, this Sewing machines has a body and is installed on the thread cutting device of this body, this electricity drives the formula transmission mechanism and comprises an electromagnetic driver, a coupling assembling, a fixed head, a movable stand, a trace and a Flexible Reset body, this electromagnetic driver is fixed in a side of described body, and it comprises a coil groups and ordered about by this coil groups and make a linearly moving driving shaft; This coupling assembling is connected to an end of described thread cutting device down and this driving shaft; This fixed head is fixed on this electromagnetic driver, and it offers a perforation; This movable stand is fixed in the other end of this driving shaft, and it forms the axis hole corresponding to this perforation; This trace passes this perforation and is fixed in this axis hole; This Flexible Reset body is socketed on the outside of this trace and is located between this fixed head and this trace end, to control the involution after this driving shaft start.

Another purpose of the present utility model, be to provide a kind of and be used for that the electricity of thread cutting device drives the formula transmission mechanism under the Sewing machines, it with the extreme position that the control driving shaft moves, shears usefulness and make down the cutting knife accurate positioning of thread cutting device and promote by the fine tuning structure setting.

Another purpose of the present utility model, be to provide a kind of and be used for that the electricity of thread cutting device drives the formula transmission mechanism under the Sewing machines, it is by the setting of position sensor, to detect the involution location point of driving shaft accurately, can prevent effectively that eedle and following thread cutting device from clashing into mutually, and increase operation and the security of using.

A purpose more of the present utility model is to provide a kind of and is used for that the electricity of thread cutting device drives the formula transmission mechanism under the Sewing machines, and it can simplify the installing of forming assembly and other attached outfit, and saves the use cost of material cost and attached outfit.

Beneficial functional of the present utility model is: the electricity of thread cutting device that is used under the Sewing machines that adopts that the utility model provides drives the formula transmission mechanism and can improve the stability of start and reduce noise.

Below in conjunction with the drawings and specific embodiments the utility model is described in detail, but not as to qualification of the present utility model.

Description of drawings

Fig. 1 drives formula transmission mechanism three-dimensional exploded view for the utility model electricity;

Fig. 2 drives formula transmission mechanism combination schematic diagram for the utility model electricity;

Fig. 3 drives the electromagnetic driver cut-away view of formula transmission mechanism for the utility model electricity;

Fig. 4 is applied to thread cutting device user mode figure () under the Sewing machines for the utility model electricity drives the formula transmission mechanism;

Fig. 5 is applied to thread cutting device user mode figure (two) under the Sewing machines for the utility model electricity drives the formula transmission mechanism.

Wherein, Reference numeral

1 electricity drives the formula transmission mechanism

10 electromagnetic drivers, 11 boards

12 cover bodies, 13 coil groups

14 driving shafts, 141 locating holes

15 latches

20 coupling assemblings

Double-screw bolt in 21 sleeves 22

23 linking arms

30 fixed heads

31 perforation

40 movable stands

41 coupling holes, 42 axis holes

50 traces

The solid assembly of 51 screws, 52 spiral shells

60 elastomers

70 fine tuning structures

701 bolts, 702,703 stop tab

75 position sensors

751 Magnetic Induction switches set, 752 magnet assemblies

80 thread-loosening device actuating arms

9 Sewing machiness

93 thread-loosening devices

The specific embodiment

Relevant detailed description of the present utility model and technology contents cooperate graphic being described as follows, yet appended graphic reference and the explanation usefulness of only providing not is to be used for the utility model is limited.

See also Fig. 1, Fig. 2 and shown in Figure 3, be respectively the utility model electricity and drive formula transmission mechanism three-dimensional exploded view, combination schematic diagram and electromagnetic driver cut-away view, the utility model provides a kind of and is used for that the electricity of thread cutting device drives the formula transmission mechanism under the Sewing machines, and the direct drive-type transmission mechanism 1 of this electromagnetism mainly comprises an electromagnetic driver 10, a coupling assembling 20, a fixed head 30, a movable stand 40, a trace 50 and a Flexible Reset body 60.

Electromagnetic driver 10 comprises a board 11, one cover body 12, one coil groups 13 and a driving shaft 14 (as shown in Figure 3), wherein board 11 roughly is a L font, cover body 12 connects perpendicular to the long-armed of board 11,13 of coil groups are ccontaining and be fixed in cover body 12 inside, the cylindrical shape iron core sleeve that the driving shaft 14 of present embodiment is fixed in the axostylus axostyle stage casing by an axostylus axostyle and socket is constituted, offer a locating hole 141 in its leading portion, this driving shaft 14 is arranged in the center of coil groups 13, and the electric power that is provided by power supply unit (figure do not show), so that coil groups 13 and driving shaft 14 produce mutual excitatory effect, do linear moving back and forth and order about driving shaft 14.

Coupling assembling 20 has a sleeve 21, and form double-screw bolt 22 in a side of sleeve 21, in addition be extended with a linking arm 23 at the end away from sleeve 21, this sleeve 21 is socketed on aforementioned driving shaft 14 and has the part of locating hole 141, and penetrates locating hole 141 and fix with a latch 15.

Fixed head 30 roughly is " people " font, is fixed in the end of electromagnetic driver 10 away from aforementioned board 11 by screw, and Local Convex exposes the outer peripheral edge of cover body 12, and offers a perforation 31 on fixed head 30.

Movable stand 40 is the triangular shape block, forms a coupling hole 41 and an axis hole 42 respectively in its two corner, and this coupling hole 41 is socketed on the back segment place of aforementioned driving shaft 14, and axis hole 42 then disposes corresponding to the perforation 31 of aforementioned fixation plate 30.

One end of trace 50 is provided with a screw 51, and it is fixing to be spirally connected for the solid assembly 52 of a spiral shell, after this trace 50 passes the perforation 31 of fixed head 30, and is fixed in by screw in the axis hole 42 of movable stand 40.

The Flexible Reset body 60 of present embodiment is a spiral compression spring, and it is socketed in trace 50 outsides and is pulled between fixed head 30 and trace 50 ends by the elasticity folder, in order to the involution after 14 starts of control driving shaft.

In addition, the utility model electricity drives formula transmission mechanism 1 and also comprises a fine tuning structure 70, this fine tuning structure 70 mainly is made of in 702,703 of two stop tab of bolt 701 bolt 701 and fixed interval, this bolt 701 is bolted in aforementioned interior double-screw bolt 22, and two stop tab 702,703 folder is pulled in aforementioned latch 15, move and can control the shift position of driving shaft 14 by the front and back adjustment of bolt 701.

Preferableization, the utility model electricity drives formula transmission mechanism 1 and also comprises a position sensor 75, this position sensor 75 is made up of a Magnetic Induction switches set 751 and a magnet assembly 752, Magnetic Induction switches set 751 is fixed on the fixed head 30 by bearing arm, magnet assembly 752 then is fixed on the movable stand 40 by board, drive movable stand 40 by driving shaft 14 and make linear displacement, and come sensing magnet assembly 752 through signals with Magnetic Induction switches set 751, and can detect driving shaft 14 actual stop positions.

Preferableization, the utility model electricity drives formula transmission mechanism 1 and also comprises a thread-loosening device actuating arm 80, and this thread-loosening device actuating arm 80 is fixed on the movable stand 40.

See also Fig. 4 and shown in Figure 5, being respectively the utility model electricity drives the formula transmission mechanism and is applied to thread cutting device user mode figure () and (two) under the Sewing machines, the utility model electricity drives formula transmission mechanism 1 and can be installed on the Sewing machines 9, this Sewing machines 9 has a body 91, once thread cutting device 92, one thread-loosening device 93 and other associated mechanisms or device, following thread cutting device 92 and thread-loosening device 93 are installed on respectively on the operating platform below and body 91 fronts of body 91, be arranged in the board 11 of electromagnetic driver 10 during combination with screw, be directly fixed on body 91 back sides and electricity is driven formula transmission mechanism 1, be connected to down the swing arm and the aforementioned linking arm 23 of thread cutting device 92 again with screw; In like manner, the actuating arm and the aforementioned thread-loosening device actuating arm 80 that can also screw be connected to thread-loosening device 93; So, electricity be can reach and formula transmission mechanism 1 and following thread cutting device 92 and thread-loosening device 93 combinations driven.

After the sewing of 9 pairs of sewn objects of Sewing machines comes to an end, can a signal be transferred to electromagnetic driver 10 by control device (figure does not show), by the iron core sleeve mutual excitatory effect of coil groups 13 with driving shaft 14, move and make driving shaft 14 produce axial linear, and be connected with following thread cutting device 92 and thread-loosening device 93 respectively by coupling assembling 20 and thread-loosening device actuating arm 80, make suture shear action and thread-loosening device 93 and unclasp action and can drive down thread cutting device 92 as suture.In addition can do the position adjustment with respect to interior double-screw bolt 22 and move, and then can control the extreme position that driving shaft 14 moves, and make down the cutting knife accurate positioning of thread cutting device 92 and promote shearing usefulness by the bolt 701 of fine tuning structure 70.Again, setting by position sensor 75, at driving shaft 14 when involution is not to the location point that sets, can come sensing magnet assembly 752 through whether signal by Magnetic Induction switches set 751, and this signal is transferred to the control device of Sewing machines 9, do sewing action next time and end Sewing machines 9, clash into mutually, more increase operation and the security of using to prevent car pin and cutting knife effectively.

Certainly; the utility model also can have other various embodiments; under the situation that does not deviate from the utility model spirit and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the utility model, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the utility model.

Claims

1. one kind is used for that the electricity of thread cutting device drives the formula transmission mechanism under the Sewing machines, and this Sewing machines has a body and is installed on the thread cutting device of this body, it is characterized in that, this electricity drives the formula transmission mechanism and comprises:

One electromagnetic driver is fixed in a side of described body, and this electromagnetic driver comprises a coil groups and ordered about by this coil groups and make a linearly moving driving shaft;

One coupling assembling is connected to an end of described down thread cutting device and this driving shaft;

One fixed head is fixed on this electromagnetic driver, and this fixed head offers a perforation;

One movable stand is fixed in the other end of this driving shaft, and this movable stand forms the axis hole corresponding to this perforation;

One trace passes this perforation and is fixed in this axis hole; And

One Flexible Reset body is socketed on the outside of this trace and is located between this fixed head and this trace end, to control the involution after this driving shaft start.

2. according to claim 1ly be used for that the electricity of thread cutting device drives the formula transmission mechanism under the Sewing machines, it is characterized in that, this electromagnetic driver also comprises a board that is connected in described body and a cover body that is connected in this board, sheathed this coil groups outside that is coated on of this cover body, this driving shaft then protrudes out the outside of this cover body.

3. according to claim 1ly be used for that the electricity of thread cutting device drives the formula transmission mechanism under the Sewing machines, it is characterized in that, the linking arm that this coupling assembling has a sleeve and extends from this sleeve, this jacket casing is connected to this driving shaft, and this linking arm then is connected in described thread cutting device down.

4. according to claim 3ly be used for that the electricity of thread cutting device drives the formula transmission mechanism under the Sewing machines, it is characterized in that, also comprise a fine tuning structure, this fine tuning structure comprises a bolt and fixed interval in two stop tab of this bolt, this driving shaft offers the locating hole for a latch cross-under, this coupling assembling also comprises an interior double-screw bolt that takes shape in this sleeve one side, this bolt is bolted in double-screw bolt in this, this two stop tab is then pressed from both sides and is pulled in this latch, is moved by the adjustment of this bolt and controls the shift position of this driving shaft.

5. according to claim 1ly be used for that the electricity of thread cutting device drives the formula transmission mechanism under the Sewing machines, it is characterized in that this movable stand also offers a coupling hole, this coupling hole is socketed on this driving shaft.

6. according to claim 1ly be used for that the electricity of thread cutting device drives the formula transmission mechanism under the Sewing machines, it is characterized in that, one end of this trace is provided with a screw that is spirally connected for the solid assembly of a spiral shell, pulls in this fixed head and the solid inter-module of this spiral shell in the two ends of this Flexible Reset body elasticity folder respectively.

7. according to claim 6ly be used for that the electricity of thread cutting device drives the formula transmission mechanism under the Sewing machines, it is characterized in that this Flexible Reset body is a spiral compression spring.

8. according to claim 1ly be used for that the electricity of thread cutting device drives the formula transmission mechanism under the Sewing machines, it is characterized in that, also comprise a position sensor, this position sensor comprises a Magnetic Induction switches set and a magnet assembly, this Magnetic Induction switches set is fixed on this fixed head, this magnet assembly then is fixed on this movable stand, by the Magnetic Induction of this Magnetic Induction switches set and this magnet assembly, and detects this driving shaft stop position.

9. according to claim 1ly be used for that the electricity of thread cutting device drives the formula transmission mechanism under the Sewing machines, it is characterized in that, this Sewing machines also comprises a thread-loosening device that is installed on this body, this electricity drives the formula transmission mechanism and also comprises a thread-loosening device actuating arm that is fixed in this movable stand, connects and control the start of described thread-loosening device.