CN205368708U - Sewing machine's take -up device - Google Patents

Abstract

The utility model discloses a sewing machine's take -up device, its characterized in that thread take -up tension lever end is equipped with the through wires hole, the thread take -up tension lever middle section is equipped with a shaft hole, be equipped with a rotation axis in the shaft hole, the outside radial three swing arm of extending of rotation axis end fixedly connected with, upper swing arm outer end is connected with the stopper, the next swing arm outer end is connected with down the stopper, it is connected with the permanent magnet to go up the stopper, the stopper is connected with upper permanent magnet down, on, the stopper lies in the upper and lower both sides of thread take -up tension lever end respectively down, rotation axis rotate clockwise goes up the stopper and can collide the upside of thread take -up tension lever end and inhale the upside in the thread take -up tension lever end, the stopper can collide the downside of thread take -up tension lever end and inhale the downside in the thread take -up tension lever end under the rotation axis anticlockwise rotation, be equipped with the dog with the swing arm outer end collision that resets on the aircraft nose, this dog stops the swing arm outer end that restores to the throne at the thread take -up tension lever to the stroke down in -process, the downside of thread take -up tension lever end is thrown off to the stopper under making, and convenient for operation, the structure is brief, is easy to carry out.

Description

The wire picking device of sewing machine

Technical field

The present invention relates to a kind of sewing machine component, the particularly wire picking device of a kind of sewing machine.

Background technology

Sewing machine is to make the requisite instrument of clothes, its efficiency is high, workmanship quality is good, it is typically all head, support and drive mechanism and adnexa form, thread take-up tension lever is one of them parts, suture upwards can be strained when car, ensure the quality of sewing clothes, but still have weak point during the work of existing thread take-up tension lever mechanism, after initial eedle penetrates lead-in wire, first stroke of thread take-up tension lever is easy to the line pull-out pin hole that will penetrate, must threading again, waste time and energy, although sometimes, operator can deliberately elongate lead-in wire to solve this problem, but so can increase the workload of follow-up pruning the end of a thread, this still awaits technological innovation and solves.

Summary of the invention

In order to solve the problems referred to above, the invention provides the wire picking device of a kind of sewing machine.

nullThe technical solution used in the present invention is: the wire picking device of a kind of sewing machine，Including head、Support and drive mechanism，Drive mechanism is connected to thread take-up tension lever，It is characterized in that thread take-up tension lever termination is provided with through wires hole，Thread take-up tension lever stage casing is provided with an axis hole，A rotating shaft it is provided with in axis hole，Rotating shaft termination is fixedly connected with three swing arms extended radially outward，Three swing arms respectively reset swing arm、Upper swing arm and the next swing arm，Upper swing arm outer end is connected to upper limit position block，The next swing arm outer end is connected to lower position block，Upper limit position block is connected to permanent magnet，Lower position block is connected to lower permanent magnet，On、Lower position block lays respectively at the both sides up and down of thread take-up tension lever termination，Rotating shaft rotates clockwise upper limit position block and can collide the upside of thread take-up tension lever termination and inhale the upside in thread take-up tension lever termination，Rotating shaft rotates counterclockwise lower position block and can collide the downside of thread take-up tension lever termination and inhale the downside in thread take-up tension lever termination，Head is provided with and the block of the swing arm outer end collision that resets，This block stops reset swing arm outer end in thread take-up tension lever downward stroke process，Lower position block is made to disengage the downside of thread take-up tension lever termination.

The present invention could also say that the wire picking device of a kind of sewing machine, described upper swing arm and the next swing arm angle are 30 degree to 150 degree.

The present invention could also say that the swing arm wire picking device of a kind of sewing machine, and described reset swing arm outer end is connected to roller.

Further, described thread take-up tension lever is provided with support arm, and upper limit position block is inhaled when the upside of thread take-up tension lever termination, and lower position block is inhaled on support arm.

Further, described reset swing arm outer end is connected to location permanent magnet, and thread take-up tension lever is provided with oblique arm, and upper limit position block is inhaled when the upside of thread take-up tension lever termination, and location permanent magnet is inhaled on oblique arm.

Further, described lower position block and contact site, thread take-up tension lever termination are provided with rubber cushion.

Further, described head is provided with end slipway, and block is connected in slideway can up-down adjustment position.

Further, described reset swing arm is elasticity arm.

nullThe present invention arranges rotatable three swing arms in the stage casing of thread take-up tension lever，Thread take-up tension lever is adjusted a high position by the handwheel rotating sewing machine during use，Arbitrary swing arm will be moved after threading，Make lower position block and thread take-up tension lever termination lower contacts and be pull-in on bottom, thread take-up tension lever termination，While moving, suture is clipped between bottom, thread take-up tension lever termination and lower position block，Suture is pushed down by magnetic force retaining clip holding force，Suture is pulled out downwards when thread take-up tension lever is descending，Loop line surplus is reserved for upward stroke，Avoid upward stroke that line is pulled out pin hole，After thread take-up tension lever comes downwards to certain position, reset swing arm contacts with block，Three swing arms are driven to rotate，Lower position block separates with bottom, thread take-up tension lever termination，Thread take-up tension lever continues to come downwards to stroke latter end，Upper limit position block is close with top, thread take-up tension lever termination gradually，Inhale on top, thread take-up tension lever termination by inertia and permanent magnet suction upper limit position block，Swing arm outer end departs from block，Later stroke swing arm is relatively motionless by suction position，Thereafter reciprocating stroke lower limit position block is in released state does not affect take-up，What so design made that the end of a thread of the first pin can reserve is brief，Reduce the later stage to prune，And,Make initial several pins that sewing machine works，Particularly the first pin and the second pin all compare closely，The shortcoming that in the past initial several pins are more open can be overcome.

Accompanying drawing explanation

Fig. 1 is embodiment of the present invention overall structure schematic diagram and partial enlarged drawing.

Fig. 2 is embodiment of the present invention decomposition texture schematic diagram and partial enlarged drawing.

Number in the figure title: 1 head；2 thread take-up tension levers；3 through wires holes；4 axis holes；5 rotating shafts；6 reset swing arms；7 upper swing arms；8 the next swing arms；9 upper limit position blocks；10 lower position blocks；Permanent magnet on 11；12 times permanent magnets；13 driving levers；14 blocks.

Detailed description of the invention

nullThe embodiment of the present invention is just like Fig. 1、Shown in 2，The wire picking device of this sewing machine includes head 1、Support and drive mechanism，Head is the major part of sewing machine,Each mechanism kinematic closes and coordinates periodic duty，Sewing can be united by a seam，Head is connected on support，Support can be used for work platforms，Drive mechanism ensures the co-operating of each mechanism，Drive mechanism is connected to thread take-up tension lever 2，Thread take-up tension lever termination is provided with through wires hole 3，Thread take-up tension lever stage casing is provided with an axis hole 4，A rotating shaft 5 it is provided with in axis hole，Rotating shaft termination is fixedly connected with three swing arms extended radially outward，Three swing arm respectively reset swing arms 6、Upper swing arm 7 and the next swing arm 8，Upper swing arm outer end is connected to upper limit position block 9，The next swing arm outer end is connected to lower position block 10，Upper limit position block is connected to permanent magnet 11，Lower position block is connected to lower permanent magnet 12，On、Lower position block lays respectively at the both sides up and down of thread take-up tension lever termination，Rotating shaft rotates clockwise upper limit position block and can collide the upside of thread take-up tension lever termination and inhale the upside in thread take-up tension lever termination，Rotating shaft rotates counterclockwise lower position block and can collide the downside of thread take-up tension lever termination and inhale the downside in thread take-up tension lever termination，Reset swing arm outer end is connected to a driving lever 13，Head is provided with and the block 14 of the swing arm outer end driving lever collision that resets，This block stops reset swing arm outer end in thread take-up tension lever downward stroke process，Lower position block is made to disengage the downside of thread take-up tension lever termination.

nullThe present invention arranges rotatable three swing arms in the stage casing of thread take-up tension lever，Thread take-up tension lever is adjusted a high position by the handwheel rotating sewing machine during use，Arbitrary swing arm will be moved after threading，Make lower position block and thread take-up tension lever termination lower contacts and be pull-in on bottom, thread take-up tension lever termination，While moving, suture is clipped between bottom, thread take-up tension lever termination and lower position block，Suture is pushed down by magnetic force retaining clip holding force，Suture is pulled out downwards when thread take-up tension lever is descending，Loop line surplus is reserved for upward stroke，Avoid upward stroke that line is pulled out pin hole，After thread take-up tension lever comes downwards to certain position, reset swing arm contacts with block，Three swing arms are driven to rotate，Lower position block separates with bottom, thread take-up tension lever termination，Thread take-up tension lever continues to come downwards to stroke latter end，Upper limit position block is close with top, thread take-up tension lever termination gradually，Inhale on top, thread take-up tension lever termination by inertia and permanent magnet suction upper limit position block，Swing arm outer end departs from block，Later stroke swing arm is relatively motionless by suction position，Thereafter reciprocating stroke lower limit position block is in released state does not affect take-up，What so design made that the end of a thread of the first pin can reserve is brief，Reduce the later stage to prune，And,Make initial several pins that sewing machine works，Particularly the first pin and the second pin all compare closely，The shortcoming that in the past initial several pins are more open can be overcome.

During enforcement, encountering the stroke length after block according to swing arm outer end, adjust angle formed by upper swing arm and the next swing arm so that it is can overturn smoothly, the upper swing arm of above-described embodiment and the next swing arm angle are 90 degree, control to be advisable at 30 degree to 150 degree；Roller can be connected in reset swing arm outer end during enforcement, or roller is set on driving lever, the more smooth fluent support arm that also can extend a branch on thread take-up tension lever during collision block, inhale when the upside of thread take-up tension lever termination at upper limit position block, lower position block is inhaled on support arm, three swing arms are made to connect more firm in the reciprocating stroke in later stage, more firmly also location permanent magnet can be connected in reset swing arm outer end in order to connect, thread take-up tension lever stretches out an oblique arm again, upper limit position block is inhaled when the upside of thread take-up tension lever termination, location permanent magnet is inhaled on oblique arm, prevent from skidding in order to clamp increases frictional force, lower position block and contact site, thread take-up tension lever termination can be provided with rubber cushion；Also can be provided with end slipway on head, block be connected in slideway can up-down adjustment position, thus arranging travel position when releasing clamp；Reset swing arm also can be set to elasticity arm, has elastic force deformation characteristic, impact during buffering collision, forms bigger inertia.

It is only the specific embodiment of the invention in sum, but it is not limited to embodiment, also can reconfiguring more implementation by each technical characteristic, all when without departing from present inventive concept, the equivalence done according to the application is modified and prior art interpolation is accordingly to be regarded as the technology of the present invention category.

Claims (1)

1. null1. the wire picking device of a sewing machine，Including head、Support and drive mechanism，Drive mechanism is connected to thread take-up tension lever，It is characterized in that thread take-up tension lever termination is provided with through wires hole，Thread take-up tension lever stage casing is provided with an axis hole，A rotating shaft it is provided with in axis hole，Rotating shaft termination is fixedly connected with three swing arms extended radially outward，Three swing arms respectively reset swing arm、Upper swing arm and the next swing arm，Upper swing arm outer end is connected to upper limit position block，The next swing arm outer end is connected to lower position block，Upper limit position block is connected to permanent magnet，Lower position block is connected to lower permanent magnet，On、Lower position block lays respectively at the both sides up and down of thread take-up tension lever termination，Rotating shaft rotates clockwise upper limit position block and can collide the upside of thread take-up tension lever termination and inhale the upside in thread take-up tension lever termination，Rotating shaft rotates counterclockwise lower position block and can collide the downside of thread take-up tension lever termination and inhale the downside in thread take-up tension lever termination，Head is provided with and the block of the swing arm outer end collision that resets，This block stops reset swing arm outer end in thread take-up tension lever downward stroke process，Lower position block is made to disengage the downside of thread take-up tension lever termination，Described upper swing arm and the next swing arm angle are 30 degree.