CN2450235Y

CN2450235Y - Feed dog swing driving controlling device for industrial sewing machine

Info

Publication number: CN2450235Y
Application number: CN 00246439
Authority: CN
Inventors: 陈瑞文
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-08-15
Filing date: 2000-08-15
Publication date: 2001-09-26
Anticipated expiration: 2010-08-15

Abstract

The utility model relates to a swing driving and controlling device for cloth feeding teeth of an industrial sewing machine. The sewing machine is rotated by a transmission shaft, and a tooth holder assembly, a first eccentric wheel group and a second eccentric wheel group are sheathed on the transmission shaft which is fixedly connected with a machine body through a cam. The first and second eccentric wheel groups are driven by the transmission shaft to respectively interlock a drive rod and a connecting rod to generate synclastic reciprocating twist, and simultaneously, a first and a second cloth feeding teeth drive the shaft to twist; simultaneously, a connecting seat is pushed by the horizontal deflection of a positioning base and the radial deflection of a C-shaped block to guide the cloth feeding teeth to generate arc amplitude deflection and make sewed pieces have better effects of clamping and feeding materials. The utility model has the advantages of easy assembly and remote possibility of damage.

Description

The amplitude of oscillation driving-controlling device of industrial sewing machine work feed tooth

The utility model relates to a kind of amplitude of oscillation driving-controlling device of industrial sewing machine work feed tooth, refers to that especially a kind of work feed tooth that makes produces arc width of cloth beat, and the pull driving-controlling device of feeding of the preferable folder of tool.

By the Sewing machines work feed tooth of commonly using, mainly drive the work feed tooth and produce parallel passing and sinking by a balance staff, and provide the propelling movement of materials and parts, with regard to this structure, this work feed tooth only will sink after the materials and parts passing when pin send sewing immediately, because adopt intermittent level to push, cloth or the leather more thick and heavy for materials and parts can take place to cause its feeding poor effect because of the tractional force quantity not sufficient of work feed tooth, and when causing sewing materials and parts produce wrinkle Zhe or need application of force post-tensioning just be accomplished sewing.

Being with, the inventor in view of this, is to be determined to be improved, and through constantly development test, finishes the utility model eventually.

The purpose of this utility model is to provide a kind of amplitude of oscillation driving-controlling device of industrial sewing machine work feed tooth, can overcome above-mentioned shortcoming, makes the preferable folder of the sewing spare tool feeding effect of pulling, and simple in structure, cost is low, assembling is easy and not fragile.

The purpose of this utility model is achieved in that a kind of amplitude of oscillation driving-controlling device of industrial sewing machine work feed tooth, wherein the power of Sewing machines is to drive power transmission shaft by belt pulley to rotate, be set with the toothholder assembly on the power transmission shaft in regular turn, first eccentric group, second eccentric group and mat one cam and body are fixed, toothholder assembly below has a straight-bar, this straight-bar can be subjected to power transmission shaft to drive rotation, and utilizes the oblique gear train interlock shuttle bar of being located in the base to rotate, and it is characterized in that:

This first eccentric group, the second eccentric group correspondence is sleeved on the power transmission shaft and can drives the drive rod and the connecting rod that are connected with in its bottom respectively and produces in the same way twisting backward, wherein the bottom of first eccentric group is connected with drive rod after in conjunction with a bent axle, the other end mat one universal joint seat of drive rod and the first work feed tooth driving shaft connect group, and extend the below of the positioning seat that is consolidated in a shape, make positioning seat twisted by the first work feed tooth driving shaft, and with its be the center produce flat to the beat motion, and the place ahead of positioning seat has a dovetail groove, this dovetail groove can insert the location for connecting support, and be can appropriateness on, following slippage; The bottom of this second eccentric group is combined with a connecting rod, other end nationality one universal joint of connecting rod and the second work feed tooth driving shaft connect group, and extend and be consolidated in a  shape piece side wall centers, this C shape piece can be twisted by the second work feed tooth driving shaft, and moves with its beat that is the center produces radially;

This connecting support, in its end face work feed tooth that locks, but and in the dovetail groove in the corresponding insertion of the dovetail block of its rear side of mat positioning seat the place ahead, the inner face one of the corresponding  shape of connecting support front side inner edge piece has a projection that slightly is the shape of falling C, make this projection can be when connecting support inserts positioning seat corresponding embedding  shape piece inner face;

Nationality is made up of above-mentioned member, drive first by power transmission shaft, second eccentric group, interlock drive rod and connecting rod produce in the same way back and forth twisting respectively, make simultaneously with it and connect first of group, the second work feed tooth driving shaft reverses, and drive positioning seat respectively and  shape piece moves partially, connecting support is inserted in the dovetail groove in the place ahead of positioning seat, and the corresponding inner face that embeds  shape piece of the projection of its front side inner edge, make this first, when the second work feed tooth driving shaft drives positioning seat and the motion of  shape piece respectively, this connecting support is subjected to the flat radial beat displacement to beat passing and  shape piece of positioning seat simultaneously, make connecting support to pass according to positioning seat, utilize  shape piece to drive projection simultaneously, the dovetail block that makes its rear side in dovetail groove on, following slippage, make connecting support and be fixedly arranged on the work feed tooth of its end face, can integrate connecting support and be subjected to positioning seat to pass running, and the axial displacement of  shape piece drive generation, make this work feed tooth be guided the generation arc width of cloth to stop partially.

This work feed tooth has the flank of tooth of arc, makes work feed tooth and connecting support be able to the preferable coupling group of tool and puts.

The utility model can have the effect of following enhancement:

(1), this work feed tooth can integrate connecting support according to connecting support and be subjected to positioning seat to pass running, and  shape piece drives the stress of the axial displacement that produces etc., makes this work feed tooth guide generation arc width of cloth beat, makes the preferable folder of the sewing spare tool feeding effect of pulling.

(2), nationality is by the positioning seat and the  shape piece of shape, and utilizes connecting support to integrate, and the amplitude of oscillation driving-controlling device of the work feed tooth that group is configured to has the simplest structure and the most smooth-going arc width of cloth beat effect.

(3), the utlity model has simple in structure, cost is low, assembling is easy and non-damageable advantage, and the sewing unit that can mate different kenels puts use, can reach the demand practical purpose of industry.

Further describe the utility model below in conjunction with accompanying drawing:

Fig. 1 is a three-dimensional exploded view of the present utility model.

Fig. 2 is a combination stereogram of the present utility model.

Fig. 3 is subjected to  shape piece to promote up radial slippage for positioning seat of the present utility model is flat to passing connecting support beat and connecting support, makes the action schematic diagram of enduring width of cloth pendulum on the work feed tooth.

Fig. 4 passes for positioning seat of the present utility model and returns connecting support again, and connecting support is subjected to  shape piece to compress to sink to move, make the action schematic diagram of work feed tooth sinking width of cloth pendulum.

Head sees also illustrated in figures 1 and 2, the amplitude of oscillation driving-controlling device of a kind of industrial sewing machine work feed tooth of the present utility model, wherein the power of Sewing machines is to drive power transmission shaft 2 by belt pulley 1 to rotate, be set with toothholder assembly 3 on the power transmission shaft 2 in regular turn, first, second eccentric group 4,5 and mat one cam 6 and body (figure does not show) fixed, toothholder assembly 3 belows have a straight-bar 31, this straight-bar 31 can be driven by power transmission shaft 2 and rotate and utilize oblique gear train 33 interlock shuttle bars 34 rotations of being located in the base 32, it is characterized in that: this is first years old, second eccentric group 4, the 5th, correspondence is sleeved on the power transmission shaft 2, and can drive the drive rod 41 and the connecting rod 51 that are connected with in its bottom respectively and produce in the same way twisting backward, wherein the bottom of first eccentric group 4 is connected with drive rod 41 in order to bent axle 40 backs that drive needle bar group 401 in conjunction with one, the other end of drive rod 41 is to connect group by a universal joint seat 42 and the first work feed tooth driving shaft 43, and extend the below of the positioning seat 44 that is consolidated in a shape, make positioning seat 44 can be subjected to 43 twistings of the first work feed tooth driving shaft, and with its be the center produce flat to the beat motion, and the place ahead cording of positioning seat 44 has a dovetail groove 441, make this dovetail groove 441 insert the location for connecting support 45, and be can appropriateness on, the state of following slippage; The bottom of this second eccentric group 5 is combined with a connecting rod 51, other end nationality one universal joint 52 of connecting rod 51 and the second work feed tooth driving shaft 53 connect group, and extend the side wall centers that is consolidated in a  shape piece 54, make this  shape piece 54 can be subjected to 53 twistings of the second work feed tooth driving shaft, and move with its beat that is the center produces radially; This connecting support 45, be to lock in its end face to have the work feed tooth 46 of arc-shaped tooth one by one, but and in the dovetail groove 441 in dovetail block 451 corresponding insertion positioning seats 44 the place aheads of its rear side of nationality, and connecting support 45 front side inner edges, the inner face one of corresponding  shape piece 54 has a projection 452 that slightly is the shape of falling C, make this projection 452 can be when connecting support 45 inserts positioning seats 44 corresponding embedding  shape piece 54 inner faces; Nationality is made up of above-mentioned member, can utilize power transmission shaft 2 to drive first, second eccentric group 4,5 interlock drive rod 41 and back and forth twistings of connecting rod 51 generations respectively, make simultaneously and company's group first, the second work feed

tooth driving shaft

43,53 reverse, and it is moving to drive positioning seat 44 and the 54 inclined to one side strikes of  shape piece respectively, fit this, because connecting support 45 is inserted in the dovetail groove 441 in the place ahead of positioning seat 44, and the projection 452 of its front side inner edge is the inner face of the corresponding  of embedding shape piece 54, make aforementioned first, the second work feed

tooth driving shaft

43,53 when driving the motion of positioning seat 44 and  shape piece 54 beats respectively, because this connecting support 45 is passed to beat by the flat of positioning seat 44 simultaneously, radial beat displacement with  shape piece 54, making connecting support 45 to pass according to positioning seat 44 utilizes  shape piece 54 to drive projection 452 simultaneously, the dovetail block 451 that makes its rear side in dovetail groove 441 on, following slippage, the work feed tooth 46 that makes connecting support 45 by this and be fixedly arranged on its end face can be integrated connecting support 45 and be subjected to positioning seat 44 to pass running and  shape piece 54 drives the axial displacement iso-stress that produces, make this work feed tooth 46 be guided generation arc width of cloth beat (please and to consult Fig. 3, shown in 4), so that the preferable folder of the sewing spare tool feeding effect of pulling to be provided.

Claims

1, a kind of amplitude of oscillation driving-controlling device of industrial sewing machine work feed tooth, its belt pulley and power transmission shaft are connected, be set with toothholder assembly, first eccentric group, second eccentric group on the power transmission shaft in regular turn, this power transmission shaft is fixed by a cam and body, toothholder assembly below is rotated and is provided with a straight-bar, this straight-bar is rotationally connected by oblique gear train and the shuttle bar of being located in the base, it is characterized in that:

The bottom of this first eccentric group is in conjunction with a bent axle, this bent axle is provided with a drive rod, the other end of drive rod is connected with the first work feed tooth driving shaft by a universal joint seat, this first work feed tooth driving shaft extends the below of the positioning seat that is consolidated in a shape, this positioning seat with the first work feed tooth driving shaft for flat to the center of beat motion, the place ahead of this positioning seat has a dovetail groove, and connecting support insertion is positioned in this dovetail groove and leaves appropriate gap up and down in dovetail groove; The bottom of this second eccentric group is combined with a connecting rod, the other end of connecting rod connects group by a universal joint and the second work feed tooth driving shaft, this second work feed tooth driving shaft extends the side wall centers that is consolidated in a  shape piece, and this  shape piece is radially the beat centre of motion with the second work feed tooth driving shaft;

Described connecting support, in its end face work feed tooth that locks, dovetail block correspondence with its rear side is inserted in the dovetail groove in positioning seat the place ahead, the inner face of the corresponding  shape of connecting support front side inner edge piece is integrally formed with a projection that slightly is the shape of falling C, and this projection is corresponding embedding  shape piece inner face when connecting support inserts positioning seat.

2, the amplitude of oscillation driving-controlling device of industrial sewing machine work feed tooth as claimed in claim 1 is characterized in that: this work feed tooth is provided with the flank of tooth of the arc that is provided with the connecting support coupling.