CN208649606U - Sewing machine cloth-dragging wheel construction - Google Patents

Abstract

The utility model proposes a kind of sewing machine cloth-dragging wheel constructions, including bracket, main shaft on bracket, it is connected at the driven wheel of main shaft one end, set on the main shaft other end and the connecting rod that is fixedly connected with its top with main shaft, the connector sleeve being rotatably connected with the bottom end of connecting rod, unilateral bearing on connector sleeve and the idler wheel being supported on unilateral bearing, the top of connecting rod is connect with spindle eccentricity, driven wheel is connect by driving member with the driving wheel on sewing machine, a crossbeam is rotationally also equipped with by an axis body above main shaft on the bracket, a cam is equipped with above the crossbeam, the cam is rotatably arranged on bracket, the cam is connected with a motor that can be rotated with moving cam, the crossbeam corresponds to the end above idler wheel equipped with a pull lever, the bottom end of the pull lever is fixed with connector sleeve.The sewing machine cloth-dragging wheel construction can apply tractive force backward to processing cloth on sewing machine, laborious from what is manually pulled.

Description

Sewing machine cloth-dragging wheel construction

Technical field

The utility model relates to a kind of sewing device, in particular to a kind of sewing machine cloth-dragging wheel construction.

Background technique

In weaving, clothes production enterprise, sewing machine is commonly used cloth process equipment.Sewing machine be with one or More sewing threads, form one or more stitchings on sewing, the machine for making one or more layers sewing interweave or unite by a seam.Seam The machine of threading can sew the products such as the fabrics such as cotton, fiber crops, silk, hair, staple fibre and leather, plastics, paper, and the stitching stitched out is neatly beautiful It sees, is smooth secured, sewing velocity is fast, uses simplicity.In order to make cloth not be stuck in sewing, sewing personnel need to pass through hand It is continuous to draw material, it operates relatively elaborate.

Utility model content

The utility model proposes a kind of sewing machine cloth-dragging wheel construction, solves and expected arduously by manually drawing in the prior art Problem.

The technical solution of the utility model is achieved in that

A kind of sewing machine cloth-dragging wheel construction including bracket, the main shaft on the bracket, is connected at the main shaft one end Driven wheel, set on the main shaft other end and be fixedly connected with its top with main shaft connecting rod, rotatably connect with the bottom end of the connecting rod Connector sleeve, the unilateral bearing on the connector sleeve and the idler wheel being supported on the unilateral bearing connect, the top of the connecting rod with Spindle eccentricity connection, the driven wheel are connect by driving member with the driving wheel on sewing machine, on the bracket above main shaft also It is rotationally equipped with a crossbeam by an axis body, a cam is equipped with above the crossbeam, which is rotatably arranged on bracket, The cam is connected with a motor that can be rotated with moving cam, which corresponds to the end above idler wheel equipped with a pull lever, the drawing The bottom end of lever is fixed with connector sleeve.

Preferred embodiment is, which is placed on the side far from idler wheel and is equipped with a pull rod, the both ends of the pull rod respectively with bracket And the central axis of unilateral bearing is rotatably connected, and a clamping screw is also worn and be screwed on the bracket, the clamping screw is in branch It is arranged with spring on the body of rod below frame, the bottom end of the clamping screw presses on pull rod.

Preferred embodiment is that the connecting rod is connect by a speed-ratio regulation component with spindle eccentricity, the speed-ratio regulation component packet Include the dial positioned at outside and control panel that is being stacked on the inside of the dial and being set on main shaft, the center of the dial Equipped with a perforation, the inner surface of the dial forms an eccentric groove extended along the periphery of perforation in centrifugal direction, the control panel It is equipped with a strip groove, slideably contains a sliding block in the strip groove, the surface of the sliding block has protruded outward one slidably Convex block in eccentric groove, the speed-ratio regulation component further include making its end across the top of connecting rod and the perforation of dial Screw togather the screw being fixed on sliding block.

Preferred embodiment is that the speed-ratio regulation component further includes being located at control panel far from dial side and being inserted in bracket On bolt, be additionally provided with multiple hole bodies worn for bolt in the control panel.

Preferred embodiment is the hole body setting that the lock bolt bar is arranged on bracket and its end is made to correspond to control panel, The bolt in being also arranged with spring on the pin rod of its plunger side, mutually fix with plunger and bracket respectively by the both ends of the spring.

Preferred embodiment is that the idler wheel is silica gel wheel.

Preferred embodiment is that the outer surface of the silica gel wheel forms rough surface.

Preferred embodiment is that a wheel is additionally provided with below the idler wheel, which is metal wheel.

The utility model has the following beneficial effects:

The sewing machine cloth-dragging wheel construction of the utility model can apply tractive force backward to processing cloth on sewing machine, from What is manually pulled is laborious.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor Under, it is also possible to obtain other drawings based on these drawings.

Fig. 1 is the structural schematic diagram of the utility model sewing machine cloth-dragging wheel construction；

Fig. 2 is the structural schematic diagram of another angle of Fig. 1；

Fig. 3 is the enlarged drawing of speed-ratio regulation components in Fig. 1；

Fig. 4 is the structural schematic diagram of dial inner surface in Fig. 3；

Fig. 5 is the structural schematic diagram that disc portion is controlled in Fig. 3.

In figure:

10, bracket；20, main shaft；30, driven wheel；40, connecting rod；50, connector sleeve；60, unilateral bearing；70, idler wheel；80, fast Than adjusting component；81, dial；82, control panel；83, bolt；810, it perforates；811, eccentric groove；820, strip groove；821, sliding Block；822, convex block；823, hole body；85, screw；86, spring；90, pull rod；11, clamping screw；90, crossbeam；91, motor；92, Cam；93, pull lever.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

As shown in Figures 1 and 2, which includes bracket 10, the main shaft 20 on the bracket 10, connects The driven wheel 30 for being arranged in 20 one end of main shaft, company main shaft 20 other end set on this and be fixedly connected with its top with main shaft 20 Connector sleeve 50, the unilateral bearing 60 on the connector sleeve 50 and the support that the bottom end of bar 40 and the connecting rod 40 is rotatably connected The top of idler wheel 70 on the unilateral bearing 60, the connecting rod 40 is connect with 20 bias of main shaft.In on main shaft 20 on the bracket 10 Side is also rotationally equipped with a crossbeam 90 by an axis body, and a cam 92 is equipped with above the crossbeam 90, which can be rotated Ground is set on bracket 10, which is connected with a motor 91, is rotated with band moving cam 92, corresponding 70 top of idler wheel of the crossbeam 90 End be equipped with a pull lever 93, the bottom end of the pull lever 93 and connector sleeve 50 are fixed.

The connector sleeve 50 is equipped with a pull rod 90 in the side far from idler wheel, the both ends of the pull rod 90 respectively with bracket 10 and single It is rotatably connected to the central axis of bearing 60, a clamping screw 11, the clamping screw 11 is also worn and be screwed on the bracket 10 In being arranged with spring on the body of rod of 10 lower section of bracket, the bottom end of the clamping screw 11 is pressed on pull rod 90, passes through clamping screw Height of the 11 pressure adjustment pull rod 90 relative to bracket 10, reconciles idler wheel 70 to the pressure of cloth to reach, spring is set Set the restoring force of adjustment clamping screw 11.

The driven wheel 30 is connect by driving members such as belt or chains with the driving wheel on sewing machine.In use, this is actively Wheel rotation drives driven wheel 30 to rotate, and drives main shaft 20 to rotate by driven wheel 30, to make the top of connecting rod 40 around main shaft 20 Rotation, and then make the bottom end of connecting rod 40 that 50 swing of connector sleeve be driven to make 50 band of connector sleeve due to the setting of unilateral bearing 60 Dynamic idler wheel 70 discontinuously rotates in one direction always, and the direction is the side for promoting the cloth of sewing machine to be formed to rear side dilatory force To.Setting by the sewing machine cloth-dragging wheel construction is to the tractive force of cloth application backward is processed on sewing machine, from manually What is pulled is laborious.The idler wheel 70 can realize that its lift is put with the rotation of moving cam 92 by operation motor 91, can specifically pass through motor 91 band moving cams 92 rotate, and make to be resisted against below on crossbeam 90, connect crossbeam 90 and lift on the end of pull lever 93, make to pull Bar 93 pulls connector sleeve 50 to be lifted up together with idler wheel 70, so that the upper lift of idler wheel 70 is realized, to facilitate putting for lower section cloth It sets；It is on the contrary then realize putting down for idler wheel 70.

The idler wheel 70 is silica gel wheel, and outer surface forms rough surface.When it is implemented, can be also equipped with outside the idler wheel 70 multiple Outwardly projecting anti-skidding salient point prevents from skidding to enhance frictional force when idler wheel 70 is outer and cloth contacts.

In the present embodiment, which is connect by a speed-ratio regulation component 80 with 20 bias of main shaft.Please refer to figure 3, the speed-ratio regulation component 80 include positioned at outside dial 81, be stacked at 81 inside of the dial and be set on main shaft 20 Control panel 82 and positioned at the bolt 83 control panel 82 inside and be inserted on bracket 10.The dial 81 is circular discs, wherein The heart is equipped with a circular perforation 810.The outer surface of the dial 81 be equipped with scale, please refer to Fig. 4, the dial 81 it is interior Surface forms an eccentric groove 811 extended along the periphery of perforation 810 in centrifugal direction.Please refer to Fig. 5, which is With an equal amount of disk of dial 81, a strip groove 820 which is provided with, it is sliding that one is slideably contained in the strip groove 820 Block 821, the surface of the sliding block 821 have protruded outward a convex block 822.After the dial 81 is covered in control panel 82, convex block 822 It is contained in eccentric groove 811 and can be slided along eccentric groove 811, and by a screw 85 successively across the top of connecting rod 40 and scale The perforation 810 of disk 81 and so that its end is screwed togather the middle part for being fixed on the sliding block of control panel 82, the head of screw 85 is resisted against perforation On the connecting rod 40 in 810 outsides.Multiple hole bodies 823 worn for bolt 83 are additionally provided in the control panel 82.The pin rod of the bolt 83 Be arranged on bracket 10 and make its end correspond to control panel 82 hole body setting, the bolt 83 on the pin rod of its plunger side also It is arranged with spring 86, the both ends of the spring 86 can be fixed with plunger and 10 phase of bracket respectively.

When using the speed-ratio regulation component 80, the screw in first 81 outside of rotary dial loosens it suitably, can be by inserting Pin 83 is arranged in the hole body 823 of control panel 82 and positions control panel 82, is rotated further by the centrifugation that dial 81 passes through its inner surface Slot 811 drives convex block 822 and moves with movable slider 821 along strip groove 820, to keep the screw being arranged on sliding block 821 separate Or close to the center of main shaft 20, and then the center for the separate or close main shaft 20 in top for reaching connecting rod 40, that is, realize connecting rod 40 The eccentric distance on top and main shaft 20, the revolving speed for thus controlling idler wheel improve its versatility to be adapted to different machines.

When it is implemented, the lower section of the idler wheel 70 can also be equipped with another wheel, which is metal wheel, cloth clamp when use Between the idler wheel 70 and another wheel.When practical application, the side of another wheel and idler wheel 70 can also be connected with a tooth Mechanism is taken turns, to drive another wheel to rotate when idler wheel 70 rotates.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model Protection scope within.

Claims (8)

1. a kind of sewing machine cloth-dragging wheel construction, it is characterised in that: including bracket, the main shaft on the bracket, be connected at this The driven wheel of main shaft one end, set on the main shaft other end and be fixedly connected with its top with main shaft connecting rod, with the bottom of the connecting rod Hold connector sleeve, the unilateral bearing on the connector sleeve and the idler wheel being supported on the unilateral bearing being rotatably connected, the company The top of bar is connect with spindle eccentricity, and the driven wheel is connect by driving member with the driving wheel on sewing machine, on the bracket in A crossbeam is rotationally also equipped with by an axis body above main shaft, a cam is equipped with above the crossbeam, the cam is rotationally On bracket, which is connected with a motor that can be rotated with moving cam, which corresponds to the end above idler wheel equipped with one Pull lever, bottom end and the connector sleeve of the pull lever are fixed.

2. sewing machine cloth-dragging wheel construction as described in claim 1, it is characterised in that: the connection is placed on the side far from idler wheel Equipped with a pull rod, central axis of the both ends of the pull rod respectively with bracket and unilateral bearing is rotatably connected, and also wears on the bracket And it is screwed with a clamping screw, which is arranged with spring on the body of rod below the bracket, and the bottom end of the clamping screw is supported It is pressed on pull rod.

3. sewing machine cloth-dragging wheel construction as described in claim 1, it is characterised in that: the connecting rod passes through a speed-ratio regulation component Connect with spindle eccentricity, the speed-ratio regulation component include positioned at outside dial and be stacked on the inside of the dial and be set to Control panel on main shaft, the center of the dial are equipped with a perforation, and the inner surface of the dial forms one along the periphery of perforation In the eccentric groove that centrifugal direction extends, which is equipped with a strip groove, slideably contains a sliding block in the strip groove, The surface of the sliding block protrudes outward a convex block being slidably set in eccentric groove, which further includes across connecting rod Top and dial perforation and so that its end is screwed togather the screw being fixed on sliding block.

4. sewing machine cloth-dragging wheel construction as claimed in claim 3, it is characterised in that: the speed-ratio regulation component further includes being located at Control panel is far from dial side and is inserted in the bolt on bracket, and multiple holes worn for bolt are additionally provided in the control panel Body.

5. sewing machine cloth-dragging wheel construction as claimed in claim 4, it is characterised in that: the lock bolt bar is arranged on bracket And its end is made to correspond to the hole body setting of control panel, the bolt is in being also arranged with spring on the pin rod of its plunger side, the spring Both ends mutually fixed with plunger and bracket respectively.

6. sewing machine cloth-dragging wheel construction according to any one of claims 1 to 5, it is characterised in that: the idler wheel is silica gel Wheel.

7. sewing machine cloth-dragging wheel construction as claimed in claim 6, it is characterised in that: the outer surface of the silica gel wheel forms coarse Face.

8. sewing machine cloth-dragging wheel construction as described in claim 1, it is characterised in that: be additionally provided with a wheel below the idler wheel Son, the wheel are metal wheel.