CN2556229Y - Sewing machine foot bar loading system - Google Patents
Sewing machine foot bar loading system Download PDFInfo
- Publication number
- CN2556229Y CN2556229Y CN 02239128 CN02239128U CN2556229Y CN 2556229 Y CN2556229 Y CN 2556229Y CN 02239128 CN02239128 CN 02239128 CN 02239128 U CN02239128 U CN 02239128U CN 2556229 Y CN2556229 Y CN 2556229Y
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- CN
- China
- Prior art keywords
- depression bar
- spring
- compression
- sliding sleeve
- sewing machine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Sewing Machines And Sewing (AREA)
Abstract
The utility model provides a sewing machine compression bar loading device. A compression bar and a lifting mechanism which freely move up and down are arranged in a jib boom of the sewing machine. A compression plate which takes a pivot as the fulcrum is arranged on an axle bed in the jib boom. A convex part and a spring support which is in the middle of the convex part are arranged in the middle of the compression plate. A compression resistant spring is arranged vertically on the spring support and is fixed by a bolt. The other end of the compression plate is connected with a groove of a compression rod fixed sliding bush. So a compression load generated by the spring when the compression rod ascends is lightened and the load which is generated to the lifting device is lightened.
Description
Technical field
The utility model relates to a kind of Sewing machines depression bar pressue device.
Background technology
Known Sewing machines depression bar pressurization structure, as shown in Figures 1 and 2, wherein depression bar 1 supports via bearing 2 and bolt 3 and can free knee-action; Sliding sleeve 4 is fixed near this depression bar central part, and a fixedly sliding sleeve 5 that can stop rotation is set on the straight flute of guide rod 8; Sliding sleeve 4 and fixing sliding sleeve 5 also integrated structure.
And shown in Figure 1, spring bearer plate 11 is the strong point with latch 13, is provided with compression screw 12 near central part, and its end is connected with the fixing groove 5a of sliding sleeve 5 upper ends.When lock screw 12, spring bearer plate 11 just can conduct to the load that the rigidity of its tool is suppressed fixedly sliding sleeve 5, sliding sleeve 4 and the depression bar 1 etc. of depression bar pressurization structure.
Shown in Figure 2, utilize bolt 3 to adjust with pressure-proof spring 11a and will compress extremely fixedly sliding sleeve 5 of axial load.
Control lever 9 is connected connection by lifting cam 10 with fan-shaped connecting plate 6 lower ends, when rotating, fan-shaped connecting plate 6 be strong point rotation with bolt 7, and projection 6a contacts with fixing sliding sleeve 5, and begin to move toward the top, conduct to sliding sleeve 4 by tension spring 44 and make depression bar 1 begin to rise.
Crank 15 is fixed on the axle 17 that bearing (not shown) set in the horn supported, thereon and with latch 16 connecting rod 14 is set and is connected with fan-shaped connecting plate groove 6b, when axle 17 is complied with the rotation of its radial direction, fan-shaped connecting plate 6 is that the strong point begins to rotate and goes up fixedly sliding sleeve 5 of act with bolt 7, and then drives to torque spring 44, sliding sleeve 4 elevate a turnable ladder depression bar 1 again.
As above-mentioned known structure, wherein be installed in the cloth clamp device (not shown) of depression bar lower end, to push down the thing of making on the thing propulsive mechanism of making and make and move when advancing, the elevate a turnable ladder of cloth clamp device conducts to depression bar 1, and increases spring according to the rising ratio of depression bar 1 and suppress.Therefore when making, will approach thing and mix with thick thing and make, particularly during material thing such as leather, sometimes thicker material portion is caused and bad situation such as weigh wounded, simultaneously, when thing and change direction are made in adding, the operation lowering or hoisting gear becomes more heavy, and Chang Yi makes operating personnel's fatigue.The utility model is for solving above-mentioned problem points to be solved in response to the product of creating.
Summary of the invention
The purpose of this utility model provides a kind of Sewing machines depression bar pressue device, utilizes the connecting rod of lever to be connected in depression bar, and the pressurization spring is set near the lever central part again.According to and, when the initial setting that puts on the depression bar suppresses and same the suppressing of traditional technology, because of the depression bar reaction pressure that comes from the compression conduction of spring that rises is alleviated.
The utility model provides a kind of Sewing machines depression bar pressue device, main depression bar and the lifting mechanism that in the horn of Sewing machines, is equiped with the easy on and off motion, it is characterized in that: on the axle bed in the horn be fulcrum and pivot is equipped with a pressing plate with the pivot, having a protuberance on this pressing plate central part reaches in the spring(-supported) mount of protuberance central portion, pressure-proof spring is vertical setting on spring(-supported) mount and with bolted, and the other end of pressing plate then is connected in depression bar fixedly on the groove of sliding sleeve.
The utility model can be the compression load that spring is produced when alleviating the depression bar rising, and alleviates the load that lifting device is produced, and alleviates operating personnel's work fatigue.
Description of drawings
The structural scheme of mechanism of Fig. 1 conventional art one embodiment.
The structural scheme of mechanism of another embodiment of Fig. 2 conventional art.
Fig. 3 the utility model embodiment mechanism faces constitutional diagram.
The side-looking constitutional diagram of Fig. 4 the utility model embodiment mechanism.
Mechanism's three-dimensional exploded view of Fig. 5 the utility model embodiment.Fig. 6 conventional art and the amount of suppressing comparison diagram of the present utility model.
The specific embodiment
See also shown in Fig. 3～5, depression bar 1 supports by bolt 3 in the top, and the lower end is supported by bearing 2, and portion depends on closely and is connected with the groove of guide rod 8 in the central, then, the side is provided with the fixedly sliding sleeve 5 that can stop rotation thereon again, and fixedly 4 of sliding sleeve 5 and sliding sleeves are combined into one with the screw tension spring 44 that locks for these.Bolt 25 utilizes bolt locking to be incorporated into the upper end of depression bar 1, begins to shift the time limit in bolt 3 and neutralizes bar toward its axially movable brake; Moreover the fixedly rising amount of movement of sliding sleeve 5 is controlled in the upper-lower position adjustment that must utilize bolt 3.
Fan-shaped connecting plate 6 is that fulcrum rotates with bolt 7, can contact linking with fixing sliding sleeve 5 at the projection 6a of its lower end, causes rotatablely moving of fan-shaped connecting plate 6 and can make fixedly that sliding sleeve 5 changes into rectilinear motion; Again, the stopper of connecting rod 14 conducts to fan-shaped connecting plate 6 through groove 6b; Control lever 9 supports by bearing 9a, 9b and free to rotate, and have a cam 10 be installed in fan-shaped connecting plate 6 lower ends can frictional movement.
Connecting rod 14 1 ends are connected on the groove 6b of fan-shaped connecting plate 6, the other end then utilizes latch 16 and E type clasp to be incorporated into the spiral arm end of crank 15, and support and axle 17 stoppers free to rotate via the seat stand (not shown) of horn 38, utilize one 46 of connector 45 vertical fixing in axle 17 lower end parts, again in axle 46 1 ends with the fastening axle 48 of contiguous block 47, so that the rotatory force of the axle 46 that conduction axis 17 other ends link with pallet 49.
Pressing plate 18 is installed in as fulcrum with screw 21 with pivot 20 and is fixed on the axle bed 19 in the horn 38, having a protuberance 22 on its central part reaches in the spring(-supported) mount 23 of protuberance central portion, pressure-proof spring 11b is vertical setting on spring(-supported) mount 23 and is fastening with bolt 24, its in addition end then be connected in the fixing groove 5a of sliding sleeve 5.When clamping screw 24, pressure-proof spring 11b just can be compressed and pressing plate 18 applied and suppress to sewing piece.
Please consult again shown in Fig. 1,2 and 6, conventional art suppresses (active force) to what depression bar 1 applied, utilization is connected bolt 12 locking actions of spring bearer plate 11 central portions on the fan-shaped connecting plate 6 on the depression bar 1, or utilizing the action that is arranged at the tight pressure-proof spring 11a of depression bar 1 upper end snail bolt-lock to reach applies the effect of suppressing.Initial setting wherein suppresses and is P, and it is as follows that it suppresses P:
P=k (coefficient of elasticity) * δ (amount of spring compression)---(a)
When making, varied in thickness because of sewing fabric, or mix when making thing, change direction, lifting cam 10 on rotatable control lever 9 ends or the mobile connecting rod 14 that is connected on groove 6b, making fan-shaped connecting plate 6 is that rotate at the center with bolt 7, so that fixedly sliding sleeve 5 rises, also utilize spring 44 to be connected on sliding sleeve 4 simultaneously and depression bar 1 is risen.According to this, the P ' that suppresses of spring bearer plate 11 or spring 11a then is:
P '=P+k * δ ' (variable quantity of depression bar)---(b)
Structure of the present utility model is shown in Fig. 3,4 and 5, pressing plate 18 wherein is the strong point with pivot 20, it is connected on the groove 5a of fixing sliding sleeve 5 end in addition, and utilize clamping screw 24 and the pressure-proof spring 11b that setting is positioned at central part is exerted pressure, to suppress then and conduct to fixedly sliding sleeve 5, sliding sleeve 4, and make depression bar 1 obtain suppressing of adding downwards.At this moment, suppress when being made as P as initial setting with depression bar 1, then spring 11b to suppress F as follows:
F=P * (L1+L2)/L2}, (L1, L2 such as Fig. 4)---(c)
Just become (L1+L2)/L2 that initial setting suppresses P doubly, the decrement δ when using aforementioned pressure-proof spring 11b ":
δ”＝δ×{(L+L2)/L2}-?-?-(d)
When suppressing P, need to increase suppressing of clamping screw 24 and reach (L1+L2)/L2 doubly for making depression bar 1 obtain initial setting.
As above-mentioned structure, the pressure that varied in thickness caused that sews cloth when cramping not shown in the figures changes, or mix and make thing, change direction etc., rotation control rod 9, by tray 49 axle 17 is shaken by lifting cam 10 or pressure again, by crank 15, connecting rod 14 fan-shaped connecting plate 6 is rotated again, and conduct to fixedly sliding sleeve 5, tension spring 44, sliding sleeve 4 and rise depression bar 1.When we observe this depression bar 1 and are directed at suppressing of pressure-proof spring 11b and change, obtained the P that suppresses of elevate a turnable ladder depression bar 1 with initial setting:
P＝F×{L2/(L1+L2)}-?-?-(e)
Decrement is then from δ "/L2=δ/(L1+L2) become
δ”＝δ×{L2/(L1+L2)}-?-?-(f)
As depression bar 1 variable quantity is made as Δ δ, then formula (e) must be write as P=F+{ Δ δ K * L2/ (L1+L2) } * { L2/ (L1+L2) }
As shown in Figure 6, wherein depression bar 1 each position ascending amount bore suppresses (the hatching position that " the utility model " line indicates among Fig. 6), will alleviate than the conventional art person.
Just as mentioned above, the varied in thickness of cloth when making, make the direction change of mixing and making thing of thing etc., the initial setting that it produced is suppressed, and the utility model can reduce because of suppressing that depression bar moves up and down and produced when changing, and can reach the target that quality is stable and lessen fatigue simultaneously.
Claims (1)
1, Sewing machines depression bar pressue device, main depression bar and the lifting mechanism that in the horn of Sewing machines, is equiped with the easy on and off motion, it is characterized in that: on the axle bed in the horn be fulcrum and pivot is equipped with a pressing plate with the pivot, having a protuberance on this pressing plate central part reaches in the spring(-supported) mount of protuberance central portion, pressure-proof spring is vertical setting on spring(-supported) mount and with bolted, and the other end of pressing plate then is connected in depression bar fixedly on the groove of sliding sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02239128 CN2556229Y (en) | 2002-06-24 | 2002-06-24 | Sewing machine foot bar loading system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02239128 CN2556229Y (en) | 2002-06-24 | 2002-06-24 | Sewing machine foot bar loading system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2556229Y true CN2556229Y (en) | 2003-06-18 |
Family
ID=33712623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02239128 Expired - Fee Related CN2556229Y (en) | 2002-06-24 | 2002-06-24 | Sewing machine foot bar loading system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2556229Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106840857A (en) * | 2017-04-10 | 2017-06-13 | 李建 | A kind of button test device |
| CN109825961A (en) * | 2019-03-26 | 2019-05-31 | 杰克缝纫机股份有限公司 | Laborsaving knee leans on device, sewing machine and presser foot lifter method |
-
2002
- 2002-06-24 CN CN 02239128 patent/CN2556229Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106840857A (en) * | 2017-04-10 | 2017-06-13 | 李建 | A kind of button test device |
| CN106840857B (en) * | 2017-04-10 | 2019-10-18 | 明光鑫烨制衣有限公司 | A kind of button test device |
| CN109825961A (en) * | 2019-03-26 | 2019-05-31 | 杰克缝纫机股份有限公司 | Laborsaving knee leans on device, sewing machine and presser foot lifter method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |