CN201245759Y - Presser foot lifting mechanism of industrial flat bed sewing machine - Google Patents
Presser foot lifting mechanism of industrial flat bed sewing machine Download PDFInfo
- Publication number
- CN201245759Y CN201245759Y CNU2008201351236U CN200820135123U CN201245759Y CN 201245759 Y CN201245759 Y CN 201245759Y CN U2008201351236 U CNU2008201351236 U CN U2008201351236U CN 200820135123 U CN200820135123 U CN 200820135123U CN 201245759 Y CN201245759 Y CN 201245759Y
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- China
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- connecting rod
- presser feet
- pendulum
- lifting
- presser foot
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- Expired - Fee Related
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Abstract
The utility model discloses a lifting mechanism of an industrial flat bed sewing machine presser foot, which comprises a pressure rod driving mechanism and a swinging presser foot lifting mechanism arranged on a machine frame. In the swinging presser foot lifting mechanism, a swinging presser foot lifting cam and a wrench connecting rod are coaxially hinged on the machine frame; a sliding slot is formed at the lower part of the wrench connecting rod; a presser foot elevating swing plate and a swinging presser foot rod are both hinged inside the sliding slot, and move along the sliding slot in axial direction; a groove is formed on the left side face of the presser foot elevating swing plate, and then wedged on a machine frame riser and moves up and down along the riser; and a positioning pin is arranged on the swinging presser foot lifting cam, and wedged inside a card slot on the wrench connecting rod. The utility model changes the movement manner of the presser foot elevating swing plate through the swinging presser foot lifting mechanism, so that the lifted presser foot only moves forward and backward without up-and-down movement, the effective lifting height of the presser foot is ensured, in addition, the needle protection effect on the normal up-and-down movement of a needle rod is not impacted, and enough space is ensured for the horizontal seam reinforcement and back stitching operation.
Description
Technical field
The utility model relates to a kind of industrial flat bed sewing machine, especially relates to a kind of industrial flat bed sewing machine presser bar lifting mechanisms.
Background technology
At present, industrial flat bed sewing machine is being made thick material such as container bag, leather etc., and the pin of taking the least important seat at a square table after often needing pressure foot lifting got up is reinforced, even will knock pin down.And present general presser bar lifting mechanisms adopts and goes up eccentric shaft cam jack-up depression bar locating piece and presser feet lifting rocker, still does under the drive of pendulum presser bar up and down after causing presser feet to be raised and seesaws.Because moving up and down of presser feet, the actual room for promotion of presser feet reduces, and the workman operating space is limited, reinforces and knocks pin down and brought difficulty to transverse joint.
The utility model content
Technical problem to be solved in the utility model is to solve the move up and down problem in restriction pressure foot lifting space of industrial flat bed sewing machine presser feet when making thick material.
In order to solve the problems of the technologies described above, the technical scheme that the utility model adopted provides a kind of industrial flat bed sewing machine presser bar lifting mechanisms, comprise the depression bar driving mechanism and the pendulum presser bar lifting mechanisms that are arranged on the frame, described pendulum presser bar lifting mechanisms comprises pendulum pressure foot lifting cam, pinch bar, the spanner connecting rod, spanner promotes connecting rod, presser feet lifting rocker and pendulum presser bar, pinch bar is fixed on the pendulum pressure foot lifting cam, pendulum pressure foot lifting cam and the coaxial top that is hinged on frame of spanner connecting rod, the lower end of spanner connecting rod and spanner promote the upper articulation of connecting rod, the bottom that spanner promotes connecting rod has chute along its axis direction, and the top of presser feet lifting rocker and pendulum presser bar is articulated in spanner jointly and promotes in the chute on the connecting rod and this pin joint can move axially along this chute; Described depression bar driving mechanism comprises the depression bar locating piece, the depression bar assembly, crank before the presser feet lifting, presser feet lifting small rod, crank before the pendulum presser feet, pendulum presser feet wishbone and pendulum presser feet connecting rod, an end and the frame of crank are hinged before the presser feet lifting, one end of the other end and presser feet lifting small rod is hinged, the upper end of the other end of presser feet lifting small rod and presser feet lifting rocker is hinged, the lower end of the upper end of depression bar locating piece and presser feet lifting rocker is hinged, the lower end is fixedly connected with the depression bar assembly, have on the left surface of depression bar locating piece and the suitable longitudinal fluting of the riser of frame, described groove is stuck on the riser of frame and along frame and moves up and down, the upper end edge of pendulum presser feet wishbone is axially arranged with open slot, the middle part is hinged with frame, the lower end is hinged with an end of pendulum presser feet connecting rod, the other end of pendulum presser feet connecting rod is hinged with the pendulum presser bar, the upper end and the frame of crank are hinged before the pendulum presser feet, the lower end is provided with chute, be provided with hinge in the chute, this hinge is inserted in the open slot of putting presser feet wishbone upper end and along chute and open slot and moves.
In the such scheme, described pendulum pressure foot lifting cam is provided with alignment pin, the side of spanner connecting rod is provided with draw-in groove, and when pinch bar was depressed, the alignment pin on the pendulum pressure foot lifting cam was stuck in the draw-in groove of spanner connecting rod side and the spanner connecting rod overlaps with the longitudinal axis of spanner lifting connecting rod.
The utility model, changed the motion mode of presser feet lifting rocker by the pendulum presser bar lifting mechanisms, presser feet is only done after being raised to seesaw, do not move up and down, guaranteed effective hoisting depth of presser feet, and do not influence shank normally move up and down protect the pin effect, guaranteed that enough spaces carry out transverse joint and reinforce and knock down the pin operation.
Description of drawings
Kinematic sketch of mechanism when Fig. 1 lifts for the utility model pendulum presser feet;
Structural representation when Fig. 2 lifts for pendulum presser feet of the present utility model;
Kinematic sketch of mechanism when Fig. 3 falls for the utility model pendulum presser feet.
Among the figure: 1-pendulum pressure foot lifting cam, 2-pinch bar, 3-spanner connecting rod, the 4-spanner promotes connecting rod, 5-presser feet lifting rocker, 6-depression bar locating piece, 7-puts presser bar, crank before the 8-depression bar assembly, the lifting of 9-presser feet, 10-presser feet lifting small rod, crank before the 11-pendulum presser feet, 12-pendulum presser feet wishbone, 13-pendulum presser feet connecting rod, 20-frame.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is made detailed explanation.
As shown in Figure 2, the utility model comprises depression bar driving mechanism and the pendulum presser bar lifting mechanisms that is arranged on the frame 20, and described pendulum presser bar lifting mechanisms comprises pendulum pressure foot lifting cam 1, pinch bar 2, spanner connecting rod 3, spanner promotes connecting rod 4, presser feet lifting rocker 5 and pendulum presser bar 7.Pinch bar 2 and pendulum pressure foot lifting cam 1 are by being threaded, pendulum pressure foot lifting cam 1 and spanner connecting rod 3 coaxial frame 20 tops that are hinged on, the lower end of spanner connecting rod 3 promotes the upper articulation of connecting rod 4 by hinge and spanner, pendulum pressure foot lifting cam 1 is provided with alignment pin 14, the side of spanner connecting rod 3 is provided with draw-in groove, when pinch bar 2 is depressed, alignment pin 14 on the pendulum pressure foot lifting cam 1 promotes pin joint rotation and the final alignment pin 14 of spanner connecting rod 3 around its top and is stuck in the draw-in groove of spanner connecting rod 3 sides, at this moment, spanner connecting rod 3 overlaps with the longitudinal axis that spanner promotes connecting rod 4.The bottom that spanner promotes connecting rod 4 has chute along its axis direction, and the top of presser feet lifting rocker 5 and pendulum presser bar 7 is articulated in the C point jointly by jointed shaft, and this jointed shaft is positioned at the chute on the spanner lifting connecting rod 4 and can moves axially along this chute.
Described depression bar driving mechanism comprises depression bar locating piece 6, depression bar assembly 8, crank 9 before the presser feet lifting, presser feet lifting small rod 10, crank 11 before the pendulum presser feet, pendulum presser feet wishbone 12, pendulum presser feet connecting rod 13.An end and the frame 20 of crank 9 are hinged before the presser feet lifting, one end of the other end and presser feet lifting small rod 10 is hinged, the upper end of the other end of presser feet lifting small rod 10 and presser feet lifting rocker 5 is articulated in the A point, the lower end of the upper end of depression bar locating piece 6 and presser feet lifting rocker 5 is articulated in the B point, fixedly connected with depression bar assembly 8 in the lower end, have on the left surface of depression bar locating piece 6 and the suitable longitudinal fluting of the riser of frame 20, the groove on the depression bar locating piece 6 is stuck on the riser of frame 20 and along frame 20 and moves up and down.
The upper end edge of pendulum presser feet wishbone 12 is axially arranged with open slot, the middle part is hinged with frame 20, the lower end is hinged with an end of pendulum presser feet connecting rod 13, the other end of pendulum presser feet connecting rod 13 is hinged with pendulum presser bar 7, the upper end and the frame 20 of crank 11 are hinged before the pendulum presser feet, the lower end is provided with chute, is provided with hinge in the chute, and this hinge is inserted in the open slot of putting presser feet wishbone 12 upper ends and along chute and open slot and moves.
The utility model has the pendulum presser feet to lift and fall two kinds of duties.
One, as shown in Figure 2, when the pendulum presser feet lifts, be that pinch bar 2 is when depressing, its motion sketch as shown in Figure 1, it is in alignment that spanner connecting rod 3 and spanner promote connecting rod 4, the C point on the presser feet lifting rocker 5 is in bottom the chute that promotes on the connecting rod 4, before the presser feet lifting under the driving of crank 9, C point on the presser feet lifting rocker 5 can only be done small size swing, and moving up and down is restricted, and presser feet lifting rocker 5 is that guide rail moves up and down with the riser of frame 20.Like this, the motion of presser feet lifting rocker 5 restriction pendulum presser bar 7 moves up and down, and does not but influence moving up and down of depression bar assembly 8.The pendulum presser feet wishbone 12 that moves through of crank 11 affacts on the pendulum presser bar 7 with pendulum presser feet connecting rod 13 before the pendulum presser feet, and it is seesawed.The lower end of pendulum presser bar 7 connects the pendulum presser feet, depression bar assembly 8 lower ends connect protects the pin piece, so effective hoisting depth of presser feet can not only improve, the increasing operating space in this mechanism, and do not influence and protect moving up and down of pin piece, realized the function that transverse joint was reinforced and knocked pin down when thick material was made.
Two, as shown in Figure 3, when the pendulum presser feet falls, be pinch bar 2 when depressing, its motion sketch as shown in Figure 3, the C point on the presser feet lifting rocker 5 is in the chute middle part that promotes on the connecting rod 4, the freely-movable up and down of C point, like this, before the presser feet lifting under the driving of crank 9, when the C point on the presser feet lifting rocker 5 swings, pendulum presser bar 7 can also move up and down along the chute that spanner promotes on the connecting rod 4, so can be realized up and down and the motion of left and right sides both direction.
The utility model is not limited to above-mentioned preferred forms, and anyone should learn the structural change of making under enlightenment of the present utility model, every with the utlity model has identical or close technical scheme, all fall within the protection domain of the present utility model.
Claims (2)
1, a kind of industrial flat bed sewing machine presser bar lifting mechanisms, comprise the depression bar driving mechanism and the pendulum presser bar lifting mechanisms that are arranged on the frame, it is characterized in that described pendulum presser bar lifting mechanisms comprises pendulum pressure foot lifting cam, pinch bar, the spanner connecting rod, spanner promotes connecting rod, presser feet lifting rocker and pendulum presser bar, pinch bar is fixed on the pendulum pressure foot lifting cam, pendulum pressure foot lifting cam and the coaxial top that is hinged on frame of spanner connecting rod, the lower end of spanner connecting rod and spanner promote the upper articulation of connecting rod, the bottom that spanner promotes connecting rod has chute along its axis direction, and the top of presser feet lifting rocker and pendulum presser bar is articulated in spanner jointly and promotes in the chute on the connecting rod and this pin joint can move axially along this chute; Described depression bar driving mechanism comprises the depression bar locating piece, the depression bar assembly, crank before the presser feet lifting, presser feet lifting small rod, crank before the pendulum presser feet, pendulum presser feet wishbone and pendulum presser feet connecting rod, an end and the frame of crank are hinged before the presser feet lifting, one end of the other end and presser feet lifting small rod is hinged, the upper end of the other end of presser feet lifting small rod and presser feet lifting rocker is hinged, the lower end of one end of depression bar locating piece and presser feet lifting rocker is hinged, the lower end is fixedly connected with the depression bar assembly, have on the left surface of depression bar locating piece and the suitable longitudinal fluting of the riser of frame, described groove is stuck on the riser of frame and along frame and moves up and down, the upper end edge of pendulum presser feet wishbone is axially arranged with open slot, the middle part is hinged with frame, the lower end is hinged with an end of pendulum presser feet connecting rod, the other end of pendulum presser feet connecting rod is hinged with the pendulum presser bar, the upper end and the frame of crank are hinged before the pendulum presser feet, the lower end is provided with chute, be provided with hinge in the chute, this hinge is inserted in the open slot of putting presser feet wishbone upper end and along chute and open slot and moves.
2, industrial flat bed sewing machine presser bar lifting mechanisms according to claim 1, it is characterized in that described pendulum pressure foot lifting cam is provided with alignment pin, the side of spanner connecting rod is provided with draw-in groove, when pinch bar was depressed, the alignment pin on the pendulum pressure foot lifting cam was stuck in the draw-in groove of spanner connecting rod side and the spanner connecting rod overlaps with the longitudinal axis of spanner lifting connecting rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201351236U CN201245759Y (en) | 2008-08-29 | 2008-08-29 | Presser foot lifting mechanism of industrial flat bed sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201351236U CN201245759Y (en) | 2008-08-29 | 2008-08-29 | Presser foot lifting mechanism of industrial flat bed sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201245759Y true CN201245759Y (en) | 2009-05-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201351236U Expired - Fee Related CN201245759Y (en) | 2008-08-29 | 2008-08-29 | Presser foot lifting mechanism of industrial flat bed sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201245759Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102296428A (en) * | 2011-07-28 | 2011-12-28 | 中屹机械工业有限公司 | Compound feeding chain type stitch sewing machine |
| CN103046251A (en) * | 2012-12-31 | 2013-04-17 | 浙江凯泽路亚绣花机有限责任公司 | Height adjustment mechanism for independent press foot of embroidery machine |
| CN105483951A (en) * | 2016-01-11 | 2016-04-13 | 浙江理工大学 | Embroidery machine needle bar and presser foot combined driving mechanism and design method thereof |
| CN105821590A (en) * | 2015-01-26 | 2016-08-03 | Juki株式会社 | Presser-foot adjusting mechanism of sewing machine |
-
2008
- 2008-08-29 CN CNU2008201351236U patent/CN201245759Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102296428A (en) * | 2011-07-28 | 2011-12-28 | 中屹机械工业有限公司 | Compound feeding chain type stitch sewing machine |
| CN103046251A (en) * | 2012-12-31 | 2013-04-17 | 浙江凯泽路亚绣花机有限责任公司 | Height adjustment mechanism for independent press foot of embroidery machine |
| CN105821590A (en) * | 2015-01-26 | 2016-08-03 | Juki株式会社 | Presser-foot adjusting mechanism of sewing machine |
| CN105483951A (en) * | 2016-01-11 | 2016-04-13 | 浙江理工大学 | Embroidery machine needle bar and presser foot combined driving mechanism and design method thereof |
| CN105483951B (en) * | 2016-01-11 | 2017-08-22 | 浙江理工大学 | Embroidery machine having needle stem combines drive mechanism and its design method with presser feet |
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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: 20090527 Termination date: 20130829 |