CN209397353U - Feed dog frame mechanism on a kind of sewing machine - Google Patents
Feed dog frame mechanism on a kind of sewing machine Download PDFInfo
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- CN209397353U CN209397353U CN201821937997.3U CN201821937997U CN209397353U CN 209397353 U CN209397353 U CN 209397353U CN 201821937997 U CN201821937997 U CN 201821937997U CN 209397353 U CN209397353 U CN 209397353U
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- compression bar
- feed dog
- feed
- dog frame
- crank
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Abstract
The utility model discloses feed dog frame mechanisms on a kind of sewing machine, including feed dog frame, cloth pushing shaft, feed lifting rock shaft and compressor arm, described feed dog frame one end is provided with feed dog, the other end is rotationally connected with the cloth pushing shaft by cloth pushing shaft crank, the feed lifting rock shaft end is connected to the feed dog frame by feed lifting rock shaft crank, feed lifting rock shaft crank one end is fixedly connected on the feed lifting rock shaft, the other end is rotationally connected with the feed dog frame by small axis, the compressor arm bottom is connected to the feed dog frame by compression bar crank, compression bar crank one end is connected to the compressor arm, the other end connects the feed dog frame by the feed lifting rock shaft crank, the utility model on compression bar head by being arranged compression bar crank, effectively reduce frictional force and noise when swinging, keep the work of each part more stable, it loads small, service life is long.
Description
Technical field
The utility model belongs to technical field of textile equipment, in particular to feed dog frame mechanism on a kind of sewing machine.
Background technique
The working principle of existing sewing machine is that shank drives lead to be passed through under the drive of the drive set on textile fabric bottom
The provide quality goods or brilliant looper of coiling of portion makes lead and coiling weave in realize sewing.It is former in view of the special work of existing sewing machine
Reason, makes it have that stitching speed is fast, suture quality is good, advantages, the favor of mythical animals people such as easy to operate are widely used in
The fields such as clothes, household.Sewing machine generally includes shank thorn material and jumper mechanism, differential regulating mechanism, cloth feeding mechanism, looper hook
Line mechanism etc..Wherein, the feed dog in cloth feeding mechanism by elevating movement cooperate differential regulating mechanism jointly by sewing pinch to
Required position.
Application No. is 201810488285.6 applications for a patent for invention to disclose a kind of sewing machine and its cloth feeding mechanism, including
Feeding retainer and crankshaft group further include the side for being fixedly arranged on the feed dog frame, for sending with what differential regulating mechanism was connected
Cloth connecting rod and both ends are each passed through the work feed swing rod of the work feed connecting rod and the crankshaft group.The cloth feeding mechanism pass through by
Feed dog frame and work feed pendulum shaft connect, instead of original sliding slot slide block mechanism, when solving because of sliding block relative to runner movement
The problems such as clamping stagnation of generation, keeps the feed dog frame movement more stable and reliable.But the work feed guide pad in the cloth feeding mechanism supports
It leans against on upper feed dog frame, upper feed dog frame is fixed by work feed connecting rod and the shaft hole matching of wobble drive bar, is caused
The frictional force that part is subject to when swing is larger, noise is larger and contact is unstable, causes the load of other parts to become larger, shortens
Service life, and part technical requirements are high, it is at high cost.
Utility model content
The purpose of this utility model is to provide feed dog frame mechanism on a kind of sewing machine, when work, rubbing between part
Wiping power is small, and the noise of generation is small, and part time job is stable, load is small, and the service life is long.The another object of the utility model is to provide one
Kind sewing machine, the operation is stable, long service life.
The utility model provides feed dog frame mechanism on a kind of sewing machine, including feed dog frame, cloth pushing shaft, feed lifting rock shaft and pressure
Tight bar, described feed dog frame one end are provided with feed dog, and the other end is rotationally connected with the cloth pushing shaft, institute by cloth pushing shaft crank
It states feed lifting rock shaft end and the feed dog frame is connected to by feed lifting rock shaft crank, feed lifting rock shaft crank one end is fixedly connected on described
Feed lifting rock shaft, the other end are rotationally connected with the feed dog frame by small axis, and the compressor arm bottom is connected to by compression bar crank
The feed dog frame, compression bar crank one end are connected to the compressor arm, and the other end connects institute by the feed lifting rock shaft crank
State feed dog frame.
In the technical solution of the utility model, the cloth pushing shaft is parallel to each other with the feed lifting rock shaft, is installed in sewing
In the axis hole of machine casing.
Preferably, being provided with feed dog frame guide block, the work feed between the feed lifting rock shaft crank and the feed dog frame
Retainer guide block side is fixedly installed with the small axis and is rotatablely connected by the small axis and the feed lifting rock shaft crank, another sideslip
Dynamic to be installed on the feed dog frame, at runtime, the feed dog frame guide block can reciprocatingly slide along the feed dog frame.
Preferably, the compressor arm is the compression bar head for connecting the compression bar crank, the rotation socket of compression bar head bottom end
In the small axis, compression bar crown end is equipped with spring and adjusts screw, and compression bar crown end is provided with a protrusion, described
It adjusts screw bottom inner portion and offers a receiving hole, the lower spring end is inconsistent with the compression bar head and is socketed on the protrusion
Outside, upper end with the adjustings screw is inconsistent is placed in the receiving hole, the compression bar head, spring and adjusting screw are all provided with
Be placed in the compressor arm channel of sewing machine case, the compression bar head and spring can in the compressor arm channel free extension, institute
The nut for stating adjusting screw is pierced by from the compressor arm channel roof, and the compressor arm channel roof is fixedly installed with and the tune
The fixture nut that the screw thread of section screw is meshed can make spring stretch by turning adjusting screw when in use, to adjust
Feed dog is saved to the pressure of cloth.
Preferably, the compression bar crank includes the first connecting portion being connected with the compression bar head and connects with the small axis
The second connecting portion connect, the face center of the first connecting portion and the second connecting portion not on the same line, the compression bar
The axis of head is located along the same line with the first connecting portion, at this point, what is be arranged on casing is used to place the institute of compression bar head
Compressor arm channel is stated at a distance from the second connecting portion relatively far away from, the second connecting portion is one to be socketed in outside the small axis
The lantern ring in portion is an axial cylindrical body identical with the small axis, corresponding, the compression bar head at the top of the first connecting portion
Bottom end, which is offered, is bonded the cylindrical space that is adapted to the cylindrical body, and when installation, the cylindrical body is placed in the cylindrical space,
And the cylindrical body can along the circumferential direction roll in the cylindrical space, which is easily installed and is driven, and can reduce pressure
The abrasion of pole crank and feed lifting rock shaft crank increases service life
Preferably, the compression bar crank includes the first connecting portion being connected with the compression bar head and connects with the small axis
The face center of the second connecting portion connect, the first connecting portion and the second connecting portion and the axis of compression bar head are the same as always
On line, at this point, the compressor arm channel for placing compression bar head being arranged on casing is at a distance from the second connecting portion
Relative close, the second connecting portion are a lantern ring being socketed in outside the small axis, and the first connecting portion top has one
The pit of spheroidal, the direction of the pit and the axial direction of the compression bar head are located along the same line, corresponding, the compression bar
Head bottom end is one to fit the sphere being adapted to the pit, and when installation, the sphere is placed in the pit, and the sphere
It can be freely rotated in the pit, which can make the rotation of compression bar crank and feed lifting rock shaft crank more steady smooth, energy
It is enough to reduce friction and noise.
The working principle of the utility model are as follows: the cloth pushing shaft rotation, the cloth pushing shaft crank starts to swing, described in drive
Feed dog frame carries out swing, and the feed dog frame drives the sliding of feed dog frame guide block, and then drives compression bar crank and lift tooth
The swing of axis crank-swinging, feed lifting rock shaft crank makes the feed dog on feed dog frame swing up and down, and the swing of compression bar crank makes
Compression bar head squeezes spring, provides the extruding force to cloth for feed dog, realizes the work feed function of cloth feeding mechanism.
The beneficial effects of the utility model have: by compression bar head be arranged compression bar crank, make swing when frictional force and
Noise effectively reduces, and keeps the work of each part more stable, and load is small, and the service life is long.
Detailed description of the invention
Fig. 1 is the three-dimensional structure diagram of the utility model embodiment 1.
Fig. 2 is the Structure explosion diagram of the utility model embodiment 1.
Fig. 3 is the Structure explosion diagram of 1 compressor arm of the utility model embodiment.
Fig. 4 is scheme of installation of 1 pressure lever mechanism of the utility model embodiment on sewing machine case.
Fig. 5 is the structural schematic diagram of 2 compression bar crank of the utility model embodiment.
Items are respectively as follows: 1 feed dog frame, 2 cloth pushing shafts, 3 feed lifting rock shafts, 4 bushing, 5 feed dog, 6 cloth pushing shaft cranks, 7 lifts in figure
Tooth axis crank, 8 small axis, 9 compression bar cranks, 10 sewing machine cases, 11 feed dog frame guide blocks, 12 compression bar heads, 13 springs, 14 adjust spiral shell
Nail, 15 protrusions, 16 receiving holes, 17 nuts, 18 fixture nuts, 19 first connecting portions, 20 second connecting portions, 21 lantern rings, 22 cylinders
Body, 23 cylindrical spaces, 24 pits, 25 spheres, 26 screws, 27 gaskets, 28 countersunk head screws, 29 countersunk head gaskets.
Specific embodiment
The technical solution of the utility model is explained in detail below in conjunction with embodiment and attached drawing.
Embodiment 1
As shown in Figure 1 and 2, feed dog frame mechanism on a kind of sewing machine, including feed dog frame 1, cloth pushing shaft 2,3 and of feed lifting rock shaft
Compressor arm, described 1 one end of feed dog frame are provided with feed dog 5, and the other end is rotationally connected with the work feed by cloth pushing shaft crank 6
Axis 2, described 6 one end of cloth pushing shaft crank are fixedly connected on the cloth pushing shaft 2, and the other end passes through screw 26, gasket 27 and 4 turns of bushing
Dynamic to be connected to the feed dog frame 1,3 end of feed lifting rock shaft is connected to the feed dog frame 1 by feed lifting rock shaft crank 7, described
7 one end of feed lifting rock shaft crank is fixedly connected on the feed lifting rock shaft 3, and the other end is rotationally connected with the feed dog frame 1 by small axis 8,
And the countersunk head screw 28 and countersunk head gasket 29 for preventing feed lifting rock shaft crank 7 from falling off, the compression are installed in 8 end of pin shaft
Bar bottom is connected to the feed dog frame 1 by compression bar crank 9, and described 9 one end of compression bar crank is connected to the compressor arm, another
End connects the feed dog frame 1 by the feed lifting rock shaft crank 7.
In the technical scheme of this embodiment, the cloth pushing shaft 2 is parallel to each other with the feed lifting rock shaft 3, is installed in sewing
In the axis hole of machine casing 10.
As shown in Fig. 2, feed dog frame guide block 11 is provided between the feed lifting rock shaft crank 7 and the feed dog frame 1, it is described
11 side of feed dog frame guide block is fixedly installed with the small axis 8 and is connected by the small axis 8 with the feed lifting rock shaft crank 7 rotation
It connects, the other side is slidably mounted on the feed dog frame 1, and at runtime, the feed dog frame guide block 11 can be along the feed dog frame 1
It reciprocatingly slides.
As shown in Fig. 3 ~ 4, the compressor arm is the compression bar head 12 for connecting the compression bar crank 9,12 bottom end of compression bar head
Rotation is socketed on the small axis 8, and 12 top of compression bar head is equipped with spring 13 and adjusts screw 14,12 top of compression bar head
It is provided with a protrusion 15,14 bottom inner portion of adjusting screw offers a receiving hole 16,13 lower end of spring and the pressure
Head 12 is inconsistent and is socketed on outside described raised 15, upper end with the adjusting screw 14 is inconsistent is placed in the receiving hole
In 16, the compression bar head 12, spring 13 and adjusting screw 14 are all set in the compressor arm channel of sewing machine case 10, the pressure
Head 12 and spring 13 can in the compressor arm channel free extension, the nut 17 for adjusting screw 14 is from the compressor arm
Channel roof is pierced by, and the compressor arm channel roof is fixedly installed with the fixation spiral shell being meshed with the screw thread for adjusting screw 14
Mother 18, when in use, can make spring 13 stretch, to adjust feed dog 5 to the pressure of cloth by turning adjusting screw 14.
Wherein, the compression bar crank 9 include the first connecting portion 19 being connected with the compression bar head 12 and with the small axis 8
The second connecting portion 20 of connection, the face center of the first connecting portion 19 and the second connecting portion 20 not on the same line,
The axis of the compression bar head 12 is located along the same line with the first connecting portion 19, at this point, what is be arranged on casing is used to put
The compressor arm channel of compression bar head 12 is set at a distance from the second connecting portion 20 relatively far away from, the second connecting portion 20 is
One is socketed in the lantern ring 21 outside the small axis 8, is an axial circle identical with the small axis 8 at the top of the first connecting portion 19
Cylinder 22, corresponding, 12 bottom end of compression bar head, which is offered, is bonded the cylindrical space 23 being adapted to, installation with the cylindrical body 22
When, the cylindrical body 22 is placed in the cylindrical space 23, and the cylindrical body 22 can be in the cylindrical space 23 circumferentially
Direction rolls, which is easily installed and is driven, and can reduce the abrasion of compression bar crank 9 and feed lifting rock shaft crank 7, increases and uses the longevity
Life
The working principle of the present embodiment are as follows: the cloth pushing shaft 2 rotates, and the cloth pushing shaft crank 6 starts to swing, described in drive
Feed dog frame 1 carries out swing, and the feed dog frame 1 drives feed dog frame guide block 11 to slide, and then drives 9 He of compression bar crank
Feed lifting rock shaft crank 7 is swung, and the swing of feed lifting rock shaft crank 7 makes the feed dog 5 on feed dog frame 1 swing up and down, compression bar crank 9
Swing squeeze compression bar head 12 to spring 13, provide the extruding force to cloth for feed dog 5, realize sending for cloth feeding mechanism
Cloth function.
Embodiment 2
The present embodiment and the technical solution of embodiment 1 are essentially identical, and difference is:
As shown in figure 5, the compression bar crank 9 include the first connecting portion 19 being connected with the compression bar head 12 and with it is described
The second connecting portion 20 that small axis 8 connects, face center and compression bar head of the first connecting portion 19 with the second connecting portion 20
12 axis on the same line, at this point, be arranged on casing for placing the compressor arm channel and the institute of compression bar head 12
State second connecting portion 20 apart from relative close, the second connecting portion 20 is a lantern ring 21 being socketed in outside the small axis 8,
19 top of first connecting portion has the pit 24 of a spheroidal, the direction and the axial direction of the compression bar head 12 of the pit 24
It is located along the same line, corresponding, 12 bottom end of compression bar head is one to fit the sphere 25 being adapted to the pit 24, is pacified
When dress, the sphere 25 is placed in the pit 24, and the sphere 25 can be freely rotated in the pit 24, the structure energy
Enough make the rotation of compression bar crank 9 and feed lifting rock shaft crank 7 more steady smooth, friction and noise can be reduced.
Claims (6)
1. feed dog frame mechanism on a kind of sewing machine, including feed dog frame (1), cloth pushing shaft (2), feed lifting rock shaft (3) and compressor arm, institute
It states feed dog frame (1) one end to be provided with feed dog (5), the other end is rotationally connected with the cloth pushing shaft by cloth pushing shaft crank (6)
(2), it is characterised in that: feed lifting rock shaft (3) end is connected to the feed dog frame (1), the lift by feed lifting rock shaft crank (7)
Tooth axis crank (7) one end is fixedly connected on the feed lifting rock shaft (3), and the other end is rotationally connected with the feed dog by small axis (8)
Frame (1), the compressor arm bottom are connected to the feed dog frame (1) by compression bar crank (9), described compression bar crank (9) one end
It is connected to the compressor arm, the other end connects the feed dog frame (1) by the small axis (8).
2. feed dog frame mechanism on a kind of sewing machine according to claim 1, it is characterised in that: the feed lifting rock shaft crank
(7) it is provided between the feed dog frame (1) feed dog frame guide block (11), the fixed peace in feed dog frame guide block (11) side
It is rotatablely connected equipped with the small axis (8) and by the small axis (8) and the feed lifting rock shaft crank (7), the other side is slidably mounted on
The feed dog frame (1), the compression bar crank (9) are socketed on the small axis (8).
3. feed dog frame mechanism on a kind of sewing machine according to claim 2, it is characterised in that: the compressor arm includes connecting
The compression bar head (12) of the compression bar crank (9) is connect, compression bar head (12) bottom end is rotationally connected with the small axis (8), the pressure
Head (12) top is equipped with spring (13), and the compression bar head (12) and spring (13) are all set in the pressure of sewing machine case (10)
In tight bar channel, spring (13) top is fixed on the compression by the fixture nut (18) being mounted on sewing machine case
In bar channel, the compression bar head (12) and spring (13) can in the compressor arm channel free extension.
4. feed dog frame mechanism on a kind of sewing machine according to claim 3, it is characterised in that: spring (13) top
It is also equipped with and adjusts screw (14), the bottom end for adjusting screw (14) connects the spring (13), and top is from the fixed spiral shell
It is pierced by female (18) intermediate screw hole, the nut (17) for adjusting screw (14) is located at outside sewing machine case, the fixation
The internal screw thread of screw hole is meshed with the external screw thread for adjusting screw (14) in nut (18).
5. feed dog frame mechanism on a kind of sewing machine according to claim 3 or 4, it is characterised in that: the compression bar crank
(9) second connecting portion for including the first connecting portion (19) being connected with the compression bar head (12) and being connect with the small axis (8)
(20), the face center of the first connecting portion (19) and the second connecting portion (20) not on the same line, the compression bar head
(12) axis is located along the same line with the first connecting portion (19), and the second connecting portion (20) is socketed in described for one
Small axis (8) external lantern ring (21) is an axial cylindrical body identical with the small axis (8) at the top of the first connecting portion (19)
(22), corresponding, compression bar head (12) bottom end, which is offered, is bonded the cylindrical space (23) being adapted to the cylindrical body (22).
6. feed dog frame mechanism on a kind of sewing machine according to claim 3 or 4, it is characterised in that: the compression bar crank
(9) second connecting portion for including the first connecting portion (19) being connected with the compression bar head (12) and being connect with the small axis (8)
(20), the axis at the face center and compression bar head of the first connecting portion (19) and the second connecting portion (20) is in same straight line
On, the second connecting portion (20) is a lantern ring (21) for being socketed in small axis (8) outside, first connecting portion (19) top
The pit (24) with a spheroidal is held, the direction of the pit (24) and the axial direction of the compression bar head (12) are located at same straight line
On, corresponding, compression bar head (12) bottom end is one to fit with the pit (24) sphere (25) being adapted to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821937997.3U CN209397353U (en) | 2018-11-23 | 2018-11-23 | Feed dog frame mechanism on a kind of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821937997.3U CN209397353U (en) | 2018-11-23 | 2018-11-23 | Feed dog frame mechanism on a kind of sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209397353U true CN209397353U (en) | 2019-09-17 |
Family
ID=67880595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821937997.3U Active CN209397353U (en) | 2018-11-23 | 2018-11-23 | Feed dog frame mechanism on a kind of sewing machine |
Country Status (1)
| Country | Link |
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| CN (1) | CN209397353U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113493964A (en) * | 2020-04-07 | 2021-10-12 | 杰克缝纫机股份有限公司 | Upper front-back driving mechanism for upper feeding teeth in sewing machine and sewing machine |
-
2018
- 2018-11-23 CN CN201821937997.3U patent/CN209397353U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113493964A (en) * | 2020-04-07 | 2021-10-12 | 杰克缝纫机股份有限公司 | Upper front-back driving mechanism for upper feeding teeth in sewing machine and sewing machine |
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