CN201186992Y - Cutting apparatus of sewing machine - Google Patents
Cutting apparatus of sewing machine Download PDFInfo
- Publication number
- CN201186992Y CN201186992Y CNU2008200568537U CN200820056853U CN201186992Y CN 201186992 Y CN201186992 Y CN 201186992Y CN U2008200568537 U CNU2008200568537 U CN U2008200568537U CN 200820056853 U CN200820056853 U CN 200820056853U CN 201186992 Y CN201186992 Y CN 201186992Y
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- movable blade
- connecting rod
- addition
- cam
- tool rest
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Abstract
The utility model relates to a cutting device for a sewing machine, which is used for cutting cloth. The cutting device structurally comprises a cam, a linkage mechanism, and a scissor mechanism. The linkage mechanism contacts with the end face of the cam through a transmission component, and is connected with a movable knife of the scissor mechanism through a connecting rod group; the cam is used for driving the linkage mechanism; the linkage mechanism drives the movable knife of the scissor mechanism to be opened and closed for cutting; the scissor mechanism is opened and closed once every time when a needle goes up and down three times, thus preventing the idle knife from being worn. In addition, the cutting edges of the scissors are meshed by threading a fulcrum shaft in an axle hole of a dead knife and the movable knife. In addition, the cutting edges are fit to each other closely by direct pressurization through fastening a cup spring and an adjusting unit, thus preventing the dead knife from deflecting or skewing and reducing the structure.
Description
Technical field
The utility model relates to a kind of Scissoring device of Sewing machines, refers in particular to a kind of Scissoring device that the crosspointer case ring is embroidered Sewing machines cutting cloth that is used for.
Background technology
General Sewing machines is when sewing, and eedle is whenever made up and down once, and cloth promptly advances once, and the crosspointer case ring is embroidered the eedle of Sewing machines every three times up and down, and cloth just advances once.Respectively be provided with a close pin with the cloth puncture in the middle of middle the place ahead of two eedles and two eedles about this type Sewing machines, in making that Shi Qinzhen moves up and down synchronously with eedle and eedle cooperates and swings, make suture tighten the puncture edge, on cloth, form one diamond hole.If add installing one shear mechanism at the middle rear of two eedles, cut off above-mentioned diamond hole while make, form jagged edge, applicable to making of various panels.
The scissors on-off action and the eedle of existing shear mechanism move up and down synchronously, and eedle is whenever gone up next time, and scissors promptly carries out cutting action, because every three times up and down of the eedle of this type Sewing machines, cloth just advances once, and scissor action is too frequent, causes the blade wearing and tearing easily.
In addition, the more general flat pattern Sewing machines of goods that crosspointer case ring embroidery stitching sewing machine comes out easily produces fold, needs in case of necessity add installing one post-tensioning material wheel mechanism at the rear of eedle, makes cloth keep certain force of strain, and the goods that sewing is come out are more smooth.The shared space of existing shear mechanism is bigger, draws the material wheel relatively long with the longitudinal separation of eedle, draws the material operation when being unfavorable for initial making.
In addition, the movable blade of existing shear mechanism and the cutting edge interlock of dead knife are to utilize several plate shape spring leafs to compress, and so structure is comparatively complicated, and easily makes the dead knife deflection crooked.Therefore, the utility model is promptly improved at above-mentioned disappearance.
Summary of the invention
Main purpose of the present utility model, be that a kind of Scissoring device of Sewing machines is being provided, utilize the cam drive interlinked mechanism, the movable blade that interlinked mechanism drives shear mechanism again opens and closes the cutting cloth, eedle is whenever made up and down three times, cloth just advances once, and scissors just opens and closes once simultaneously, to avoid the wearing and tearing of sky cutter.Cutting cloth that simultaneously can be agile makes the cloth edge attractive in appearance carefully and neatly done.
Another purpose of the present utility model, be that a kind of Scissoring device of Sewing machines is being provided, the cutting edge interlock of the movable blade of this shear mechanism and dead knife, be to utilize fulcrum to be arranged in the axis hole of dead knife and movable blade, and by disc spring with adjust nut locking directly pressurization cutting edge is coincide, can avoid the dead knife deflection crooked, and structure is dwindled, for post-tensioning material wheel provides enough spaces.
For solving the foregoing invention purpose, the technical solution of the utility model is as follows, a kind of Scissoring device of Sewing machines includes a cam, an interlinked mechanism and a shear mechanism, one end face of described cam has protuberance, described interlinked mechanism contacts with the end face of cam with a transmission component, and is subjected to the driving of cam; This transmission component lower end connects a rotating shaft, and the interlock rotating shaft is rotated with its axis, the end in addition of this rotating shaft connects one and shakes assembly, and shaking assembly is subjected to the rotating shaft interlock and rotates, this shakes assembly and connects a horizontal bar, and driving the horizontal bar move left and right, the end in addition of this horizontal bar connects a connection rod set with a swing arm; Described shear mechanism includes a tool rest, and is mounted on dead knife and movable blade on the tool rest, and an end of connection rod set and connect this movable blade; By the cam drive interlinked mechanism, interlinked mechanism drives the movable blade of shear mechanism again, the cutting action that scissors is opened and closed.
Described connection rod set comprises a first connecting rod, a rocking bar and a second connecting rod, one end of described first connecting rod and second connecting rod is connected to the two ends of rocking bar, the centre of rocking bar is fixed on this tool rest with a fulcrum, and the in addition end of first connecting rod this swing arm that is coupling, the end in addition of second connecting rod then is coupling in the movable blade of shear mechanism; It is mobile that connection rod set is subjected to the drive of swing arm that first connecting rod and second connecting rod are presented down, and the blade of interlock movable blade opens and closes up and down simultaneously; By this, cam drive interlinked mechanism, interlinked mechanism drive the movable blade of shear mechanism again, the cutting action that scissors is opened and closed.
By the contact position of adjusting nose of cam and interlinked mechanism, can change the cooperation time that interlinked mechanism drives the shear mechanism action.
The lower end of described tool rest is provided with first fixing hole, the middle section of this dead knife and movable blade also respectively is provided with first axis hole, one end of one first fulcrum is arranged in first fixing hole of this tool rest, end is arranged in first axis hole of dead knife and movable blade in addition, and by disc spring and adjustment nut interlocking, directly pressurization coincide cutting edge, can avoid the dead knife deflection crooked, and structure is dwindled.
Other characteristics of the utility model and specific embodiment can further be understood in the detailed description of following conjunction with figs..
Description of drawings
Fig. 1 is a perspective view of the present utility model;
Fig. 2 is the utility model part assembly decomposing schematic representation;
Fig. 3 is a vertical view of the present utility model;
Fig. 4 is the decomposing schematic representation of the utility model interlinked mechanism assembly;
Fig. 5 is the decomposing schematic representation of the utility model shear mechanism assembly;
Fig. 6 is the schematic diagram of the utility model cloth cutting.
[primary clustering symbol description]
1, cam 11, end face
12, protuberance 2, interlinked mechanism
21, transmission component 211, driving member
212, roller shaft 213, roller
22, rotating shaft 23, shake assembly
231, shake seat 232, swing plate
233, sleeve 234, horizontal bar pincers
235, perforation 24, horizontal bar
25, swing arm 251, branched shaft hole
252, fixed axis 253, sleeve pipe
254, horizontal bar pincers 255, perforation
26, connection rod set 261, first connecting rod
262, rocking bar 263, second connecting rod
264, fulcrum 27, spring
28, retainer ring 29, support
30, vertical plane 301, through hole
3, shear mechanism
31, tool rest 311, first fixing hole
312, second fixing hole 313, transverse slat
32, fix 321, first axis hole
322, second axis hole 33, movable blade
331, first axis hole 332, second axis hole
34, first fulcrum 35, disc spring
36, adjust nut 37, second fulcrum
38, support body 381, chute
4, cloth 41, diamond hole
42, suture 43, jagged edge
The specific embodiment
See also Figure 1 and Figure 2, be schematic perspective view of the present utility model and part assembly decomposing schematic representation, structure of the present utility model includes:
One cam 1, one end 11 have the protuberance 12 of gradual change, make end face 11 form a curved surface.This cam 1 is meshed with the main shaft of Sewing machines with three to one gear ratio by one group of not shown travelling gear.
One interlinked mechanism 2, contact with the end face 11 of this cam 1 with a transmission component 21, these transmission component 21 lower ends connect a rotating shaft 22, the end in addition of rotating shaft 22 connects one and shakes assembly 23, this shakes assembly 23 and resists by the elastic force of a spring 27, roller 213 permanent maintenances are contacted with end face 11, and shake assembly 23 and connect a horizontal bar 24, the appropriate location of horizontal bar 24 1 ends is provided with a retainer ring 28, the support 29 of Sewing machines machine body (not shown) is fixed in collocation, one of this support 29 end is bent into vertical plane 30, spring 27 is resisted between retainer ring 28 and vertical plane 30, return back to original position to shake assembly 23 via horizontal bar 24 ejections, vertical plane 30 has a through hole 301, make the in addition end of horizontal bar 24 run through the through hole 301 of vertical plane 30, and connect a connection rod set 26 with a swing arm 25; Please cooperate and consult Fig. 3.
One shear mechanism 3 comprises a tool rest 31, and is mounted on dead knife 32 and movable blade 33 on the tool rest 31, and above-mentioned connection rod set 26 is located in this tool rest 31, and an end of connection rod set 26 connects this movable blade 33, and drives this movable blade 33 and do the cutting action.
Please cooperate and consult Fig. 4 and shown in Figure 5, this transmission component 21 comprises the driving member 211 that without exception is down L shaped, and the roller shaft 212 and the roller 213 that is sheathed on roller shaft 212 front ends that are located in its upper end.This roller 213 contacts with the end face 11 of cam 1, and the lower end of this driving member 211 connects this rotating shaft 22.This shake assembly 23 include shake the seat 231, shake to be embedded on the seat 231 and fix a swing plate 232, and swing plate 232 has a sleeve 233, sleeve 233 inner installing one horizontal bar pincers 234, sleeve 233 clamps 234 sides with horizontal bar and all is provided with perforation 235, wear wherein for this horizontal bar 24, and fix this horizontal bar 24 with screw.Therefore, when cam 1 rotated, its end face 11 was resisted against roller 213, and to promote roller 213 and driving member 211 be that fulcrum rotates with the axis of rotating shaft 22, drove rotating shaft 22 simultaneously and rotated.Rotating shaft 22 drives again shakes seat 231 rotations, and swing plate 232 is interlock horizontal bar 24 move left and right.
This swing arm 25 has 251 of branched shaft holes and establishes a fixed axis 252, and the top of branched shaft hole 251 is provided with a sleeve pipe 253, and the inner installing of sleeve pipe 253 one horizontal bars pincers 254, and the side of sleeve pipe 253 and horizontal bar pincers 254 is provided with perforation 255 wear for the other end of horizontal bar 24.Another side shaft of this swing arm 25 is established this connection rod set 26.This connection rod set 26 comprises a first connecting rod 261, a rocking bar 262 and a second connecting rod 263, one end of first connecting rod 261 this swing arm 25 that is coupling, hold an end of this rocking bar 262 that is coupling in addition, the second connecting rod 263 of holding in addition and be coupling of rocking bar 262, and the centre of rocking bar 262 is fixed on the tool rest 31 with a fulcrum 264.The end in addition of second connecting rod 263 then is coupling in movable blade 33, and drives movable blade 33 actions.
When horizontal bar 24 move left and right, is that fulcrum rotates by swing arm 25 with fixed axis 252, promptly drives first connecting rod 261 and moves up and down, first connecting rod 261 and to drive rocking bar 262 be the fulcrum rotation with fulcrum 264, interlock second connecting rod 263 moves up and down simultaneously, rotates up and down and drive movable blade 33.
See also shown in Figure 5 again, assembly exploded view for the utility model shear mechanism, the lower end of the tool rest 31 of this shear mechanism 3 is provided with first fixing hole 311 and second fixing hole 312, the middle section of dead knife 32 and movable blade 33 also respectively is provided with first axis hole 321,331, and distolateral second axis hole 322,332 that is provided with.One end of one first fulcrum 34 is arranged in first fixing hole 311 of tool rest 31, and end is arranged in first axis hole 321,331 of dead knife 32 and movable blade 33 in addition, and fixes by disc spring 35 and adjustment nut 36 interlockings.One end of one second fulcrum 37 is arranged in second axis hole 322 of dead knife 32, and end is arranged in second fixing hole 312 of tool rest 31 in addition, and fixes with packing ring and nut interlocking.332 of second axis holes of this movable blade 33 are coupling in second connecting rod 263.This shear mechanism 3 further is provided with a support body 38, and support body 38 is provided with a chute 381, and this tool rest 31 is established for 313 groups with a transverse slat and is fixed in the chute 381.
By above-mentioned structure, when the roller 213 of transmission component 21 contacted the position of cams 1 non-protuberance 12, scissors was closure state; When cam 1 turns to protuberance 12 when contacting with roller 213, promptly the blade of interlock movable blade 33 is opened, and cloth advances simultaneously, when cam 1 transfers back to the position of non-protuberance 12 subsequently, the blade of movable blade 33 downwards and dead knife 32 interlocks, with the cutting cloth.
Please cooperate the arrow of consulting Fig. 1 to indicate, when cam 1 turns to protuberance 12 when joining with roller 213, being about to roller 213 pushes away to the right, driving transmission component 21 simultaneously is that fulcrum clockwise rotates with rotating shaft 22 axis, and drive rotating shaft 22 and clockwise rotate, rotating shaft 22 simultaneously also drives shakes assembly 23 and clockwise rotates.Shaking assembly 23 is that interlock horizontal bar 24 moves right, swing arm 25 is that fulcrum clockwise rotates with fixed axis 252 then, and interlock first connecting rod 261 moves down, rocking bar 262 is that fulcrum clockwise rotates with fulcrum 264 simultaneously, and second connecting rod 263 is moved down, second connecting rod 263 and second axis hole 332 that drives movable blade 33 are that fulcrum down rotates with first fulcrum 34, the blade of movable blade 33 promptly rotates upwards and opens simultaneously, return above-mentioned action during backhaul, the blade of movable blade 33 is the blade interlock of counteragent and dead knife 32 also, to cut off cloth.
See also shown in Figure 6ly, be the schematic diagram of cloth cutting.Sewing machines when sewing, about two eedles up and down behind three sewings, cloth 4 just advances once, a needle gage promptly advances.When eedle is made, be positioned at the middle close pin of middle the place ahead of two eedles and two eedles simultaneously with cloth 4 punctures, the first puncture of close pin becomes circular hole, and suture draws back diamondwise hole 41 with the puncture edge again.Make on one side during sewing, with shear mechanism 3 cut off two diamond holes 41 suture 42 between on one side, form jagged edge 43, can apply to making of various panels.
Can install additional behind eedle and establish one and draw the material wheel mechanism, make cloth keep certain force of strain, the goods that sewing is come out are more smooth.
The utility model utilizes cam 1 to drive interlinked mechanism 2, and the movable blade 33 that interlinked mechanism 2 drives shear mechanism 3 is again done the cutting action of folding up and down, every three pins up and down of eedle, and scissors just opens and closes once, can avoid the wearing and tearing of sky cutter.And, can change interlinked mechanism 2 and drive the time that cooperates that movable blade 33 actions and cloth 4 advance by adjusting cam 1 protuberance 12 and transmission component 21 position contacting.
In addition, the mode of scissors cutting edge of the present utility model interlock is to utilize first fulcrum 34 to be arranged in first fixing hole 311 of dead knife 32 and movable blade 33, and by disc spring 35 with adjust nut 36 with dead knife 32 and movable blade 33 lockings, directly pressurization coincide cutting edge, can avoid dead knife 32 deflections crooked, and can dwindle structure, for post-tensioning material wheel provides enough spaces.
The above person, it only is the preferred embodiment of the utility model, when can not be in order to limit the enforceable scope of the utility model, all equivalences of being done according to the utility model claim and description of the invention content change and modify, all should be considered as not departing from flesh and blood of the present utility model, all should belong in the scope that the utility model patent contains.
Claims (6)
1, a kind of Scissoring device of Sewing machines is characterized in that, this Scissoring device structure comprises:
One cam, one end has protuberance;
One interlinked mechanism, contact with the end face of this cam with a transmission component, and be subjected to the driving of cam, the rotating shaft that is coupling of this transmission component lower end, and the interlock rotating shaft rotates with its axis, the end in addition of this rotating shaft connects one and shakes assembly, and shaking assembly is subjected to the rotating shaft interlock and rotates, this shakes assembly and connects a horizontal bar, and drives the horizontal bar move left and right, and the end in addition of horizontal bar connects a connection rod set with a swing arm;
One shear mechanism comprises a tool rest, and is mounted on dead knife and movable blade on the tool rest, and an end of connection rod set and connect this movable blade; By the cam drive interlinked mechanism, the movable blade that interlinked mechanism drives shear mechanism is again done the cutting action of switching.
2, the Scissoring device of a kind of Sewing machines according to claim 1, it is characterized in that: described connection rod set comprises a first connecting rod, a rocking bar and a second connecting rod, one end of this first connecting rod is coupling in swing arm, hold an end of this rocking bar that is coupling in addition, the second connecting rod of holding in addition and be coupling of rocking bar, and the centre of rocking bar is fixed on this tool rest with a fulcrum, and the end in addition of this second connecting rod then is coupling in movable blade.
3, the Scissoring device of a kind of Sewing machines according to claim 1 and 2, it is characterized in that: the lower end of described tool rest is provided with first fixing hole, middle section in dead knife and movable blade also respectively is provided with first axis hole, one end of one first fulcrum is arranged in first fixing hole of this tool rest, end is arranged in first axis hole of dead knife and movable blade in addition, and by disc spring and adjustment nut interlocking.
4, the Scissoring device of a kind of Sewing machines according to claim 1 and 2, it is characterized in that: the lower end of described tool rest is provided with second fixing hole, distolateral second axis hole that is provided with of dead knife, one end of one second fulcrum is arranged in second axis hole of dead knife, end is arranged in second fixing hole of tool rest in addition, and fixes with packing ring and nut interlocking.
5, the Scissoring device of a kind of Sewing machines according to claim 2 is characterized in that: the distolateral of described movable blade is provided with second axis hole, and is coupling in this second connecting rod.
6, the Scissoring device of a kind of Sewing machines according to claim 1 and 2, it is characterized in that: the appropriate location of described horizontal bar one end is provided with a retainer ring, Sewing machines machine body is installed with a support, one end of this support is for being bent into vertical plane, spring is resisted between retainer ring and vertical plane, shake assembly with ejection and return back to original position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200568537U CN201186992Y (en) | 2008-04-01 | 2008-04-01 | Cutting apparatus of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200568537U CN201186992Y (en) | 2008-04-01 | 2008-04-01 | Cutting apparatus of sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201186992Y true CN201186992Y (en) | 2009-01-28 |
Family
ID=40310011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200568537U Expired - Fee Related CN201186992Y (en) | 2008-04-01 | 2008-04-01 | Cutting apparatus of sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201186992Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101550640B (en) * | 2008-04-01 | 2013-06-26 | 启翔针车（上海）有限公司 | Scissoring device of sewing machine |
| CN110228099A (en) * | 2019-07-10 | 2019-09-13 | 岭南师范学院 | A kind of garment production processing device that re-packs convenient for Fast trim |
-
2008
- 2008-04-01 CN CNU2008200568537U patent/CN201186992Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101550640B (en) * | 2008-04-01 | 2013-06-26 | 启翔针车（上海）有限公司 | Scissoring device of sewing machine |
| CN110228099A (en) * | 2019-07-10 | 2019-09-13 | 岭南师范学院 | A kind of garment production processing device that re-packs convenient for Fast trim |
| CN110228099B (en) * | 2019-07-10 | 2024-04-09 | 岭南师范学院 | Board device is used in clothing production and processing convenient to tailor fast |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090128 Termination date: 20140401 |