CN2652968Y

CN2652968Y - Knife trace regulator for sewing machine thread cutter

Info

Publication number: CN2652968Y
Application number: CN 03266077
Authority: CN
Inventors: 陈世芳
Original assignee: Ching Chi Machine Co Ltd
Current assignee: Ching Chi Machine Co Ltd
Priority date: 2003-06-26
Filing date: 2003-06-26
Publication date: 2004-11-03
Anticipated expiration: 2013-06-26

Abstract

Disclosed is a tool path adjusting device of a sewing machine thread trimmer, wherein, the thread trimmer comprises a base plate, a cutter arm arranged across the base plate, and a hook rod arm which can be a shifter lever that slides in linkage on the cutter arm arranged across the cutter arm. The tool path adjusting device comprises a front guide plate, a guide pin and a rocker, wherein the upper and the lower ends of the guide plate are screwed across the base plate and can shift up and down on the base plate; the guide pin, which is passed through the hook rod arm and the cutter arm sequentially, is arranged at the bottom of the middle of the front guide plate; the first end of the rocker is pivoted on the base plate, the second end of the rocker is connected with a pin which is nested through the hook rod arm sequentially and is pivoted on the cutter arm; a spring is usually top braced between the rocker and the base plate to help the cutter arm and the hook rod arm reset.

Description

The cutter path regulator of string cutter for sewing machine

Technical field

The utility model relates to a kind of cutter path regulator of string cutter for sewing machine, especially relate to that a kind of to pass through the upper and lower transposition on this substrate of a front guide or rocking bar whole, adjust the cable cutter position that this cutter arm and raker arm are formed to link, thereby proofread and correct the movement locus of the cable cutter of Sewing machines, in addition, reset really with auxiliary this cable cutter by a spring.

Background technology

Generally be applied to the thread cutting device on the Sewing machines, as U.S.'s patent of invention the 6th, 234, No. 097 disclosed improvement cable cutters are to cooperate intermediate plate 63, cutting knife 64, raker 66 and swing arm 67 commonly used to combine by plate body 1, cutter arm 2, raker arm 3, cantilever group 4; This plate body 1 periphery is provided with locating hole for being mounted on the Sewing machines, in have a depression configured slot 12 insert for cutter arm 2 one ends; These cutter arm 2 other ends then are provided with hole 23 and screw 24 so that intermediate plate 63 and cutting knife 64 to be installed respectively; And the raker arm 3 that is provided with the right side, left two

elongated holes

31,32 and a breach 33 is inserted from swing arm 67 1 ends and is driven 3 displacements of raker arm the breach 33, and these raker arm 3 tail ends then are used to install raker 66, cooperates intermediate plate 63 and cutting knife 64, makes it can do the action of tangent line; It is characterized in that: utilize right, left side cantilever 41, the 42 cantilever groups of forming 14 are fixedlyed connected with plate body 1, wherein, left cantilever 42 projection 423 is down put in the left elongated hole 32 of raker arm 3, and right cantilever (41) projection 413 down is inserted in the hole 26 of lug 25 of cutter arm 2, make cutter arm 2 by these projection 413 conduct spot wobbles, and can reach shaking moment when significantly dwindling 2 work of raker arm 3 and cutter arm, and the elongated hole 22 that cutter arm 2 tail ends are provided with can be put into for the projection 35 under raker arm 3 tail ends just, like this, the action of raker arm 3 can be more stable, can increase the operation quality of tangent line.But above-mentioned cable cutter structure, the still following shortcoming of tool:

1. should left side cantilever 42, slightly be a ㄣ font, one end leg is locked on this plate body 1, and other end leg is a hanging shape, and establishes a projection 423 in the foot bottom distal process of this hanging shape, in the left elongated hole 32 of inserting raker arm 3, right this raker arm 3 or this cutter arm 2 are when sliding, and often because of mutual friction effect, the leg that makes this left side cantilever 42 be hanging shape produces vibration, resonance, and cause the movement locus of this raker arm 3 or cutter arm 2 can't be smooth and easy, even produce noise.

2. after this swing arm 67 resets this cutter arm 2 and raker arm 3, normal because of the gap between this each member, as the gap of 33 of swing arm 67 and this raker arm 3 breach, and this cutter arm 2 and raker arm 3 are resetted really, so very easily cause thread cutting action to fail to carry out.

3. the bending segment 321 of the left elongated hole 32 of raker arm 3 is because of the continuous friction of the projection 423 that is subjected to left cantilever 42 for a long time broadens, cause projection 423 and bending segment 321 between the gap become big, the problem that finally causes thread cutting action to fail to carry out.

4. should left side cantilever 42 be used for inserting the projection 413 of the left elongated hole 32 of this raker arm 3, and this left side cantilever 42 is fixed between the fixing point on the plate body 1 at a distance of a distance, promptly have an arm of force, when this raker arm 3 when reciprocatingly sliding, the bending segment 321 of these left side elongated hole 32 leading portions can produce bump to this projection 413, and this active force multiply by the aforesaid arm of force, to produce a bending moment to the fixing point that this left side cantilever 42 is fixed on the plate body 1, and make this left side cantilever 42 very easily produce the phenomenon of becoming flexible, get loose.

In addition, other U.S.'s patent of invention the 5th, 469,798,5,481,994,5,870,962,5,887,535,6,021,727,6,205,941, and 6,378, No. 448 grades all disclose the device of cable cutter.

Summary of the invention

Given this applicant by the research innovation, proposes a kind of cutter path regulator of string cutter for sewing machine.

The purpose of this utility model is to provide a kind of cutter path regulator of string cutter for sewing machine, wherein this cable cutter comprises a lower shaft inner cap, in this lower shaft, cover the fixing tool rest that bridges, and at this movable tool rest that fixedly bridges on the tool rest, this activity tool rest can be an actuating arm and fixedly stablizes axial slip on the tool rest at this in linkage; This cutter path regulator comprises: a guide seat, its upper/lower terminal is bolted in this lower shaft with bridging and covers, and can on this lower shaft inner cap, carry out upper and lower adjustment ground displacement, and allow this fixedly tool rest and being cross-placed in the middle of the movable tool rest on the fixing tool rest, slippage between this guide seat and this lower shaft inner cap, in addition, one guiding spacer ring is set in the central bottom of this guide seat, first guide groove that this guiding spacer ring passes this activity tool rest successively with this fixedly in the guide groove of tool rest; An and swing arm, its first end articulates in this lower shaft and covers, and its second bottom portion connects a spacer ring, this spacer ring is set in second guide groove of this activity tool rest successively and articulates fixedly on the tool rest, and shore a spring usually between swing arm and this lower shaft inner cap, reset with auxiliary fixedly tool rest and movable tool rest; And can reach the utility model purpose of the following stated:

1. can pass through this guide seat or swing arm, it is whole to carry out the upper and lower transposition on this lower shaft inner cap, adjusts this fixedly cable cutter position of being formed of tool rest and movable tool rest with interlock, thus the movement locus of the cable cutter of correction Sewing machines.

2. the cutter path regulator of the disclosed string cutter for sewing machine of the utility model, wherein this guide seat is tabular always, upper/lower terminal is fixed in respectively in this lower shaft and covers, therefore when cable cutter is worked, can not resemble common meeting produce vibrations because of cantilever phenomenon, thereby keep the steady, smooth and easy of movement locus, can effectively avoid producing noise or vibration.

3. can be by being arranged on the spring between this lower shaft inner cap and swing arm, when cable cutter resetted, auxiliary reset avoided producing the situation generation that tangent line is failed to carry out to the precalculated position.In conjunction with the accompanying drawings and the following description, can more be expressly understood the utility model.

Description of drawings

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

Fig. 2 is the utility model planar structure schematic diagram;

Fig. 3 is the schematic diagram that moves this activity tool rest from Fig. 2 trace backward;

Fig. 4 is for showing the schematic diagram of cable cutter when transversal shown in the utility model;

Fig. 5 is the be upturned schematic diagram of cable cutter of the utility model;

Fig. 6 adjusts the operation chart of this guide seat for showing the utility model trace; And

Fig. 7 adjusts the operation chart of this swing arm for showing the utility model trace.Among the figure:

100 cable cutters, 1 lower shaft inner cap

2 fixing tool rest 21 guide grooves

22 holes, 3 fixed blades

3 movable tool rest 31 first guide grooves

32 second guide grooves, 33 movable blades

4 actuating arms, 5 guide seats

51 guiding spacer rings 52 are adjusted groove

53 screws, 6 swing arms

61 first ends, 62 second ends

63 spacer rings, 64 springs

65 eccentric spacer ring 651 first shaft parts of adjusting

652 second shaft parts collude the line device 7 times

The specific embodiment

See also shown in each accompanying drawing, the utility model is a kind of cutter path regulator of string cutter for sewing machine, wherein this cable cutter 100 comprises a lower shaft inner cap 1, a fixing tool rest 2 bridges on this lower shaft inner cap 1, and in this movable tool rest that fixedly bridges on the tool rest 2, this activity tool rest 3 can fixedly be stablized axial slip on the tool rest 2 at this in linkage by actuating arm 4; This tool regulator comprises: a guide seat 5, its upper/lower terminal is bolted on this lower shaft inner cap 1 with bridging, and can on this lower shaft inner cap 1, carry out upper and lower adjustment ground displacement, and allow this fixedly tool rest 2 and being cross-placed in the middle of the movable tool rest 3 on the fixing tool rest 2, in this

guide seat

5 and 1 slippage of this lower shaft inner cap, in addition, in the central bottom of this guide seat 5 a guiding spacer ring 51 is set, first guide groove 31 that this guiding spacer ring 51 passes this activity tool rest 3 successively with this fixedly in the guide groove 21 of tool rest 2; An and swing arm 6, its first end 61 articulates on this lower shaft inner cap 1, and the bottom of its second end 62 connects a spacer ring 63, this spacer ring 63 is set in one second guide groove 32 of this activity tool rest 3 successively, and articulate this fixedly on the hole 22 of tool rest 2, and

swing arm

6 and 1 of this lower shaft inner cap are shored a spring 64 usually, reset with auxiliary fixedly tool rest 2 and movable tool rest 3.Therefore can pass through this guide seat 5 or swing arm 6, it is whole to carry out the upper and lower transposition on this lower shaft inner cap 1, adjusts this fixedly cable cutter 100 positions of being formed of tool rest 2 and movable tool rest 3 with interlock, with the cable cutter movement locus of correction Sewing machines.

Cable cutter 100 disclosed in the utility model, when work from state shown in Figure 2, this actuating arm 4 of deflection, move this activity tool rest 3 with B backward, move the movable blades 33 that this activity tool rest 3 front end F are connected simultaneously in linkage, the hook part of movable blades 33 can be colluded suture L backward move, as shown in Figure 3; When continuing again along this actuating arm 4 of R direction deflection, promptly more backward interlock move this movable blades 33, the cut-out suture L that the movable blades 33 and the fixing fixed blade 23 of tool rest 2 front ends are interlocked, and as shown in Figure 4; Behind the segment line, make this actuating arm 4 continue to stir this activity tool rest 3 along the R direction, at this moment, promptly link the backward spacer ring 63 of this swing arm 6 of the preceding side channel edge of second guide groove 32 of this activity tool rest 3, making this spacer ring 63 is the center with the pivot joint center of this swing arm 6 and lower shaft inner cap 1, dialling along R1 direction interlock changes fixing tool rest 2 (this fixedly tool rest 2 be that guiding spacer ring 51 with guide seat 5 is center deflection), and while this spring 64 of compressed energy-storage, and the front end of the fixedly tool rest 2 that makes this cable cutter 100 and movable blades 33 deviates from and colludes line device 7 tops, to avoid hindering this time to collude the regular event of line device 7, as shown in Figure 5; When tangent line operation next time, this actuating arm 4 is along the deflection of R2 direction, movable blades 33 slippage forward of this activity tool rest 3 and front end thereof links, at this moment, the former spring 64 that is compressed energy storage, i.e. elastic reset this swing arm 6 that links, and make fixedly tool rest 2 of these spacer ring 63 interlocks, guiding spacer ring 51 with guide seat 5 is center deflection, is state shown in Figure 3 and reset.

Guide seat 5 disclosed in the utility model is plate body always, bottom in the middle of it is provided with a guiding spacer ring 51, adjust groove 52 and wear one respectively in upper/lower terminal, cover to be locked in this lower shaft by screw 53, therefore this guide seat 5 just can be by the adjustment groove 52 of upper/lower terminal, be locked in to upper and lower adjustment on this lower shaft inner cap 1, as shown in Figure 6, when this guide seat 5 after top offset is adjusted, this guiding spacer ring 51 will move this fixedly tool rest 2 and this activity tool rest 3 on the linkage, its adjusted movable blades 33 positions are shown in the dotted line of Fig. 6; Otherwise, when this guide seat 5 after bottom offset is adjusted, this guiding spacer ring 51 also will together link and move down this fixedly tool rest 2 and this activity tool rest 3, be positioned at the position of this movable blades 33 with correction by this.

Guide seat 5 disclosed in the utility model, the guiding spacer ring 51 that its bottom is set, because of being arranged at the middle position of this guide seat 5, and being a straight line with screw 53 in order to this lead arm 5 that locks aligns, therefore when this cable cutter work, almost non-moment produces on this guiding spacer ring 51, it is loosening so can to reduce this guide seat 5, the possibility that gets loose, in addition because of this guide seat 5 is tabular always, and on, following two ends are locked on the lower shaft inner cap 1, therefore, be not to be a cantilever position, when cable cutter is worked, unlikely generation vibration, noise is so that the movement locus of this cable cutter is more apparent smooth and easy.

The cutter path regulator of the disclosed string cutter for sewing machine of the utility model, wherein first end 61 of this swing arm 6 is set on eccentric an adjustment on the spacer ring 65, and this off-centre is adjusted spacer ring 65, comprises one first shaft part 651, and it is fixed on this lower shaft inner cap 1; And one second shaft part 652, it axially is connected the top of this first shaft part 651, and with these first shaft part, 651 eccentric settings, make these second shaft part, 652 pivots connect first end 61 of this swing arm 6.Therefore, the operator can adjust this off-centre by rotation and adjust the angle of spacer ring 65 (as the imaginary line of Fig. 7 to shown in the solid line), adjust the position of this swing arm 6 with interlock, this moment will link this fixedly tool rest 2 and movable tool rest 3 of this swing arm 6, guiding spacer ring 51 with this guide seat 5 is center of circle deflection, is installed in movable blades 33 positions of these activity tool rest 3 front ends with correction.

Above-mentioned this first shaft part 651 can be one axially to pass this off-centre prejudicially and adjust a bolt or spacer ring in spacer ring 65.

The utility model can pass through guide seat 5 or this swing arm 6, and the fixedly tool rest 2 in the adjustment cable cutter and the position of movable tool rest 3 and its movable blades of installing 33 are so that adjust, proofread and correct the movement locus of this cable cutter.

The cutter path regulator of the disclosed string cutter for sewing machine of the utility model has following effect and characteristics:

1. the upper/lower terminal of this guide seat 5 is anchored on this lower shaft inner cap 1, when cable cutter is worked, can not produce as being cantilever-shaped structural vibrations, resonance problem usually, and is smooth and easy with the running that promotes cable cutter.

2. can be by adjusting dual modes such as guide seat 5 or swing arm 6, adjust the position of the movable blades 33 of fixedly tool rest 2 in the cable cutter and movable tool rest 3 and its installing, more can satisfy operator's demand with cooperatively interacting.

3. do not produce vibration, resonance problem because guide seat 5 is used, therefore can effectively prevent getting loose of these parts.

4. can be by being installed on the spring of 6 of this lower shaft inner cap 1 and swing arms, when cable cutter resetted, auxiliary reset was avoided producing the untrue situation of tangent line and is produced to the precalculated position.

Structure disclosed in the utility model, shape can be changed application under spirit of the present utility model and category, and the utility model is not limit certainly.

Claims

1. the cutter path regulator of a string cutter for sewing machine, wherein this cable cutter comprises a lower shaft inner cap, in this lower shaft, cover the fixing tool rest that bridges, at this movable tool rest that fixedly bridges on the tool rest, the front end of this activity tool rest connects a movable blades, and this activity tool rest can fixedly be stablized slippage on the tool rest at this in linkage by an actuating arm; It is characterized in that this cutter path regulator also comprises:

One guide seat, it wears one respectively at upper/lower terminal and adjusts groove, is locked in the lower shaft by screw to cover with bridging; This guide seat can carry out upper and lower adjustment ground displacement on this lower shaft inner cap, and allows this fixedly tool rest and being cross-placed in the middle of the movable tool rest on the fixing tool rest, and slippage between this guide seat and this lower shaft inner cap; Be provided with a guiding spacer ring in the central bottom of guide seat, first guide groove that this guiding spacer ring passes movable tool rest successively with this fixedly in the guide groove of tool rest; And

One swing arm, its first end articulates in this lower shaft and covers, and the bottom of its second end connects a spacer ring, and this spacer ring is set in second guide groove of this activity tool rest successively and articulates fixedly on the tool rest; Shore a spring between this swing arm and this lower shaft inner cap.

2. the cutter path regulator of string cutter for sewing machine as claimed in claim 1 is characterized in that, first end of this swing arm is set on eccentric an adjustment on the spacer ring, and this off-centre is adjusted spacer ring and comprised: one first shaft part, and it is connected in this lower shaft and covers; And one second shaft part, it axially is connected the top of this first shaft part, and with this first shaft part off-centre, this second shaft part pivot connects first end of this swing arm.

3. the cutter path regulator of string cutter for sewing machine as claimed in claim 2 is characterized in that, first shaft part that this off-centre is adjusted spacer ring is one axially to pass this off-centre prejudicially and adjust a bolt or spacer ring in spacer ring.

4. the cutter path regulator of string cutter for sewing machine as claimed in claim 2 is characterized in that movable tool rest axial slip on fixing tool rest.

5. the cutter path regulator of string cutter for sewing machine as claimed in claim 4 is characterized in that, first shaft part that this off-centre is adjusted spacer ring is one axially to pass an eccentric bolt or the spacer ring of adjusting in the spacer ring prejudicially.