CN218521431U - Needle swinging mechanism of sewing machine - Google Patents
Needle swinging mechanism of sewing machine Download PDFInfo
- Publication number
- CN218521431U CN218521431U CN202222214798.2U CN202222214798U CN218521431U CN 218521431 U CN218521431 U CN 218521431U CN 202222214798 U CN202222214798 U CN 202222214798U CN 218521431 U CN218521431 U CN 218521431U
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- needle
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- pendulum
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Abstract
The utility model relates to an industrial sewing machine, especially a sewing machine pendulum needle mechanism for zigzag sewing flush joint machine series, including curve stitch cam, curve stitch cam is fixed on the worm-gear shaft, and the worm-gear shaft is rotatable installs on the casing, and the roller is rotatable installs on pendulum needle crank assembly, and the spring leaf is fixed on the casing, and the spring leaf is given all the time roller one with the elasticity of curve stitch cam curved surface contact, and the right-hand member and the pendulum needle crank assembly of first connecting rod are connected, are fixed with pendulum needle axle on the casing, pendulum needle crank assembly cover is epaxial at the pendulum needle, the left end and the second connecting rod swivelling joint of first connecting rod, the beneficial effects of the utility model are that make the machine stable at sewing in-process pendulum needle, the sewing stitch is pleasing to the eye, and can not appear the phenomenon at machine needle skew faller center after the change pendulum needle width.
Description
Technical Field
The utility model relates to an industrial sewing machine, in particular to a sewing machine needle swinging mechanism for a zigzag sewing and flat sewing machine series.
Background
The used zigzag sewing flat sewing machine has the defects of single swing needle width and inconvenient adjustment to the swing needle width required by a customer in the sewing process.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the zigzag flat sewing machine, the utility model aims to design the needle swinging mechanism of the sewing machine on the premise of not influencing the use function of the zigzag flat sewing machine.
The needle swinging mechanism of the sewing machine comprises a curve stitch cam, wherein the curve stitch cam is fixed on a worm wheel shaft, the worm wheel shaft is rotatably installed on a machine shell, a roller is rotatably installed on a needle swinging crank component, a spring piece is fixed on the machine shell and always gives the roller an elastic force which is in contact with the curve surface of the curve stitch cam, the right end of a first connecting rod is connected with the needle swinging crank component, a needle swinging shaft is fixed on the machine shell and sleeved on the needle swinging crank component, the needle swinging crank component is sleeved with the needle swinging shaft, the needle swinging crank component is sleeved with a second connecting rod, the left end of the first connecting rod is rotatably connected with the second connecting rod.
Furthermore, a needle bar seat connecting shaft is fixed on the needle bar seat through a positioning pin, the needle bar seat connecting shaft is arranged on the machine shell through a shaft sleeve and can freely slide left and right but can not rotate, the right end of the needle bar seat connecting shaft is connected with the lower end of the second connecting rod through a second ring sleeve, a third ring sleeve, a first connecting plate and a second connecting plate, a first bolt and a second bolt are connected with the lower end of the second connecting rod, and the needle rod assembly is arranged on the needle bar seat.
Furthermore, the needle bar seat connecting shaft is arranged on the machine shell through a shaft sleeve, can freely slide left and right, but cannot rotate.
Preferably, the pin can flexibly rotate in the wrench shaft, the wrench and the pin are in interference fit, the pin and the large arc at the tail end of the wrench are designed to be in an eccentric structure, the front end of the wrench shaft is sleeved with a fixed ring, the rear end of the wrench shaft is provided with a nylon locking nut, the swinging needle crank assembly comprises two iron plates at the front end, the two iron plates are clamped between the fixed ring and the nylon locking nut, a lantern ring is clamped between the two iron plates, a first sleeve of the sleeve is sleeved on the wrench shaft in a sleeved mode, the nylon locking nut is adjusted, a certain clamping force is formed between the nylon locking nut and the fixed ring, when the wrench is pulled outwards, the clamping force between the fixed ring and the nylon locking nut is released, and the wrench shaft can flexibly slide in an arc-shaped groove of the swinging needle crank assembly; when the spanner is pressed inwards to the limit position, a large clamping force is generated between the fixed ring and the nylon locking nut, so that the spanner shaft is fixed in the arc-shaped groove of the swinging needle crank assembly.
Furthermore, the second connecting rod is sleeved on the needle feeding crankshaft, the needle feeding crankshaft is fixed on the machine shell, and the tight ring is fixed on the needle feeding crankshaft to prevent the second connecting rod from moving back and forth on the needle feeding crankshaft.
Preferably, the right end of the first connecting rod is embedded between the two iron plates of the needle swinging crank component through a first ring sleeve.
Preferably, the left end of the first connecting rod is connected with the second connecting rod through a connecting sleeve.
The beneficial effects of the utility model are that make the machine at sewing in-process balance staff stable, the sewing stitch seam is pleasing to the eye, and can not appear the phenomenon at machine needle skew faller center behind the change balance staff width.
Drawings
Fig. 1 is an isometric view of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 isbase:Sub>A partial sectional view A-A of the front view of the present invention;
fig. 4 is a partial sectional view B-B of the front view of the present invention.
Detailed Description
In fig. 1 to 4, the needle swing mechanism of the sewing machine includes a curved stitch cam 12, the curved stitch cam 12 is fixed on a worm wheel shaft 13, the worm wheel shaft 13 is installed on a housing and is flexibly rotatable but not slidable back and forth, when the machine is operated, the worm wheel shaft 13 drives the curved stitch cam 12 to rotate together to cause a position change of a roller 11 attached to the curved stitch cam 12, the roller 11 is installed on a needle swing crank assembly 2 through a roller shaft 9 and is flexibly rotatable, the needle swing shaft 1 is fixed on the housing, the needle swing crank assembly 2 is sleeved on the needle swing shaft 1 and is flexibly rotatable but not slidable back and forth, a spring plate 10 is fixed on the housing and always gives an elastic force to the roller 11 to cause the roller to be always in contact with the curved stitch cam 12, when the position change of the roller 11 occurs, the needle swing crank assembly 2 swings back and forth with the needle swing shaft 1 as a base point, a needle feeding crank shaft 14 is fixed on the housing, a second connecting rod 18 is sleeved on the needle feeding crank shaft 14 and is flexibly rotatable, a clamping ring 15 is fixed on the needle feeding crank shaft 14 to prevent the second needle from moving.
Four scales are processed on the left side of an arc-shaped groove on the swinging needle crank component 2, four numbers of 10, 8, 6 and 4 are marked on the left side of the scales, a V-shaped groove is processed on one side of the fixed ring 6, a small boss is processed on one end face of the fixed ring and is embedded into the arc-shaped groove of the swinging needle crank component 2, the fixed ring 6 is prevented from running, when the V-shaped groove on the fixed ring 6 corresponds to the scales on the other side of the number 10 on the swinging needle crank component 2, the swinging needle width during the operation of the machine can reach 10MM, when the scales on the other side of the number 8 are corresponding, the swinging needle width during the operation of the machine can reach 8MM, and the like, thereby the requirements of different sewing processes are met.
The wrench shaft 3 penetrates in an arc-shaped groove of the swing needle crank component 2 and can flexibly slide, the pin 5 penetrates in the wrench shaft 3 and can flexibly rotate, the wrench 4 and the pin 5 are in interference fit, the pin 5 and a tail end large arc of the wrench 4 are designed into an eccentric structure, the front end of the wrench shaft 3 is sleeved with a fixed ring 6, the tail end of the wrench shaft is provided with a nylon locking nut 8, two iron plates on the swing needle crank component 2 are clamped between the two iron plates, a first ring sleeve 7 is clamped between the two iron plates on the swing needle crank component 2, the first ring sleeve 7 is sleeved on the wrench shaft 3, the nylon locking nut 8 is adjusted to enable the nylon locking nut 8 and the fixed ring 6 to form a certain clamping force, when the wrench 4 is pulled outwards, the clamping force between the fixed ring 6 and the nylon locking nut 8 is released, and the wrench shaft 3 can flexibly slide in the arc-shaped groove of the swing needle crank component 2; when the wrench 4 is pressed inwards to the limit position, a larger clamping force is generated between the fixed ring 6 and the nylon locking nut 8, so that the wrench shaft 3 is fixed in the arc-shaped groove of the pendulum pin crank assembly 2.
The right end of the first connecting rod 16 is embedded between the two iron plates of the swing needle crank assembly 2 through a first ring sleeve 7, and can swing flexibly by taking the first ring sleeve 7 as a base point; the left end of the first connecting rod 16 is connected with the second connecting rod 18 through a connecting sleeve 17, and can swing flexibly by taking the connecting sleeve 17 as a base point.
The needle bar seat connecting shaft 25 is fixed on the needle bar seat 26 through a positioning pin, the needle bar seat connecting shaft 25 is mounted on the machine shell through a shaft sleeve, can freely slide left and right but can not rotate, the right end of the needle bar seat connecting shaft 25 is connected with the second connecting rod 18 through the second ring sleeve 23, the third ring sleeve 24, the first connecting plate 20 and the second connecting plate 21, the first bolt 19 and the second bolt 22, the needle bar component 27 is mounted on the needle bar seat, when the second connecting rod 18 swings left and right, the needle bar seat connecting shaft 25 drives the needle bar seat 26 to swing left and right, namely, the needle bar component 27 is driven to swing left and right.
Claims (7)
1. The utility model provides a sewing machine pendulum needle mechanism, including curve stitch cam, curve stitch cam fixes on the worm-gear shaft, the worm-gear shaft is rotatable installs on the casing, the roller is rotatable installs on pendulum needle crank assembly, the spring leaf is fixed on the casing, the spring leaf gives the roller all the time an elasticity that contacts with curve stitch cam curved surface, the right-hand member of first connecting rod is connected with pendulum needle crank assembly, be fixed with the pendulum needle axle on the casing, pendulum needle crank assembly cover is on the pendulum needle axle, the left end and the second connecting rod swivelling joint of first connecting rod, characterized in that, needle feed crank axle fixes on the casing, the connecting rod cover is on needle feed crank axle, it has the arc wall to open on the pendulum needle crank assembly, the spanner axle passes through the arc wall, the spanner is installed on the spanner axle through the pin, the spanner axle can be fixed on pendulum needle crank assembly through stationary ring and nylon lock nut, four scales have been processed on the arc wall left of pendulum needle crank assembly, the scale side marks corresponding digit, the stationary ring processing has a V type groove, and the stationary ring has a little boss, the arc wall of little boss imbeds in pendulum needle crank assembly.
2. The needle swinging mechanism of sewing machine as claimed in claim 1, wherein the needle bar base connecting shaft is fixed to the needle bar base by a positioning pin, the needle bar base connecting shaft is mounted to the housing through a bushing so as to be freely slidable from side to side but unrotatable, the right end of the needle bar base connecting shaft is connected to the lower end of the second connecting rod through the second ring, the third ring, the first connecting plate and the second connecting plate, the first bolt and the second bolt are connected to the lower end of the second connecting rod, and the needle bar assembly is mounted to the needle bar base.
3. The needle oscillating mechanism of sewing machine as claimed in claim 2, wherein the needle bar base connecting shaft is mounted on the machine case through a bushing so as to be freely slidable from side to side but not rotatable.
4. The needle swinging mechanism of the sewing machine as claimed in claim 3, wherein the pin can flexibly rotate in the wrench shaft, the wrench and the pin are in interference fit, the pin and the end of the wrench are designed to be eccentric, the front end of the wrench shaft is sleeved with a fixed ring, the rear end of the wrench shaft is provided with a nylon locking nut, the needle swinging crank assembly comprises two iron plates at the front end, the fixed ring and the nylon locking nut clamp the two iron plates in the middle, a lantern ring is clamped between the two iron plates, the first lantern ring is sleeved on the wrench shaft, the nylon locking nut is adjusted to enable the nylon locking nut and the fixed ring to form a certain clamping force, when the wrench is opened outwards, the clamping force between the fixed ring and the nylon locking nut is released, and the wrench shaft can flexibly slide in the arc-shaped groove of the needle swinging crank assembly; when the wrench is pressed inwards to the limit position, a large clamping force is generated between the fixed ring and the nylon locking nut, so that the wrench shaft is fixed in the arc-shaped groove of the swing needle crank assembly.
5. The needle oscillating mechanism of sewing machine as claimed in claim 4, wherein the second link is fitted over a needle feed crank shaft fixed to the housing, and a retainer ring is fixed to the needle feed crank shaft to prevent the second link from moving back and forth on the needle feed crank shaft.
6. The needle oscillating mechanism of sewing machine as claimed in claim 5, wherein the right end of the first link is inserted between two iron plates of the needle oscillating crank assembly via the first ring.
7. The needle oscillating mechanism of sewing machine according to claim 6, wherein the left end of the first link is connected to the second link by a connecting sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222214798.2U CN218521431U (en) | 2022-12-16 | 2022-12-16 | Needle swinging mechanism of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222214798.2U CN218521431U (en) | 2022-12-16 | 2022-12-16 | Needle swinging mechanism of sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218521431U true CN218521431U (en) | 2023-02-24 |
Family
ID=85243447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222214798.2U Active CN218521431U (en) | 2022-12-16 | 2022-12-16 | Needle swinging mechanism of sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218521431U (en) |
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2022
- 2022-12-16 CN CN202222214798.2U patent/CN218521431U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |