CN109440307B - Height adjusting mechanism of feed dog of sewing machine and using method thereof - Google Patents
Height adjusting mechanism of feed dog of sewing machine and using method thereof Download PDFInfo
- Publication number
- CN109440307B CN109440307B CN201811639328.2A CN201811639328A CN109440307B CN 109440307 B CN109440307 B CN 109440307B CN 201811639328 A CN201811639328 A CN 201811639328A CN 109440307 B CN109440307 B CN 109440307B
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- feed dog
- connecting block
- sewing machine
- adjusting mechanism
- height adjusting
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B27/00—Work-feeding means
- D05B27/24—Feed-dog lifting and lowering devices
Abstract
The invention relates to a height adjusting mechanism of a feed dog of a sewing machine and a use method thereof, wherein a connecting block 3 is arranged in a connecting groove on a moving bracket 4, a first rotating pin 6 is connected on the moving bracket 4, a first sliding block 7 is eccentrically connected on the first rotating pin 6, the first sliding block 7 is clamped in a first sliding groove 8 of the connecting block, and a fixing bolt in a kidney-shaped hole on the moving bracket fixes the connecting block 3 and the moving bracket 4 together; in this way, when the height position of the feed dog needs to be adjusted, the fixing bolt in the kidney-shaped hole is loosened; then, the first rotating pin is rotated to enable the first sliding block to drive the connecting block to move along the connecting groove on the moving bracket, so that the feed dog frame is adjusted to a set height position; and then the bolts in the kidney-shaped holes are screwed down under the condition of keeping the feed dog frame at the set height position, and the connecting blocks and the moving support are fixed.
Description
Technical Field
The invention relates to a height adjusting mechanism of a feed dog of a sewing machine and a using method thereof, belonging to the technical field of sewing machine manufacturing.
Background
At present, a flat sewing machine in the sewing industry realizes the movement of cloth on the upper surface of a needle plate through the movement of a cloth feeding tooth frame, teeth of the cloth feeding tooth frame are exposed from the upper surface of the needle plate and are propped against the lower surface of the cloth, the cloth feeding tooth frame moves to push the cloth to move along the upper surface of the needle plate, and the flat sewing machine can adapt to different sewing working conditions according to the height of the exposed teeth on the upper surface of the needle plate; when a user sews fabrics with different thicknesses and materials, the angles of the rack seat and the lifting fork (namely, the feeding time sequence and the tooth height) are often required to be adjusted. The lockstitch sewing machine is mainly divided into a thin material machine model and a thick material machine model, wherein one of main difference points of the thick material machine model and the thin material machine model is that the teeth of the feed tooth frame are exposed out of the needle plate and are different in height, the height of the teeth of the feed tooth frame of the thick material machine model is higher than that of the needle plate surface by Bao Liao machine model, and for the thick material machine model, the compression degree of the feed tooth frame on cloth is deeper, and stronger feed capacity can be provided.
When the feed dog frame in the prior art needs to be adjusted in height, a user needs to adjust a plurality of mechanical structural parts aiming at switching different sewing fabrics, and the adjustment process is often complex and takes a long time.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide a height adjusting mechanism for a feed dog of a sewing machine and a method for using the same, which can conveniently adjust the height of the feed dog, and has a simple structure and convenient use.
In order to achieve the above purpose, the invention provides a height adjusting mechanism of a feed dog of a sewing machine, which adopts the following technical scheme: the utility model provides a height adjusting mechanism of sewing machine feed dog, includes feed dog frame, connecting block and motion support, feed dog frame is connected on the connecting block, the connecting block is installed on the motion support; the moving support is driven by the cloth feeding mechanism to drive the connecting block and the cloth feeding tooth frame to move together so as to convey cloth;
the movable support is connected with a first rotating pin, the first rotating pin is eccentrically connected with a first sliding block, the connecting block is provided with a first sliding groove, the first sliding block is clamped in the first sliding groove, and the first rotating pin can rotate to drive the first sliding block to drive the connecting block to move;
the movable support is characterized in that a waist-shaped hole extending up and down is further formed in the movable support, a detachable fixing bolt is arranged in the waist-shaped hole, a threaded hole is formed in the connecting block, and the fixing bolt penetrates through the waist-shaped hole and is screwed in the threaded hole of the connecting block.
Preferably, the first sliding groove extends along the horizontal direction, and the first sliding block is cylindrical.
Preferably, a connecting groove is formed in the moving support, and the connecting block is arranged in the connecting groove; the connecting groove is provided with a first side surface and a second side surface which are oppositely arranged in parallel and extend up and down; the connecting block is provided with a first end face in sliding fit with the first side face and a second end face in sliding fit with the second side face.
Preferably, the motion support is provided with two kidney-shaped holes, the connecting block is provided with two threaded holes, and each kidney-shaped hole is internally provided with one fixing bolt in a penetrating way.
Preferably, a connecting hole is formed in the moving support, and the first rotating pin is pivoted in the connecting hole; the end face of the first rotating pin is provided with a straight-line-shaped clamping groove.
Preferably, the cloth feeding mechanism comprises a frame seat and a lifting fork, wherein the frame seat is driven to rotate by a cloth feeding shaft, and the lifting fork is driven to rotate by a lifting shaft; one end of the moving support is hinged with the tooth frame seat, the other end of the moving support is hinged with a second sliding block, a second sliding groove is formed in the tooth lifting fork, and the second sliding block is slidably connected in the second sliding groove.
More preferably, the second sliding block is provided with sliding surfaces respectively matched with two side surfaces of the second sliding groove.
Preferably, the feed dog frame is fixed on the top of the connecting block by screws.
Preferably, a needle plate is arranged above the feed dog frame, a slotted hole is arranged on the needle plate, and feed dogs at the top of the feed dog frame are exposed from the slotted hole.
Correspondingly, the invention also provides a use method of the height adjusting mechanism of the feed dog of the sewing machine, the height adjusting mechanism of the feed dog of the sewing machine is used for operation,
1) Loosening the fixing bolt in the kidney-shaped hole;
2) Rotating the first rotating pin to enable the first sliding block to drive the connecting block to move along the connecting groove, so that the feed dog frame is adjusted to a set height position;
3) And (3) keeping the feed dog frame at the set height position and tightening the bolts in the kidney-shaped holes.
As described above, the height adjusting mechanism of the feed dog of the sewing machine and the use method thereof have the following beneficial effects: in the height adjusting mechanism of the feed dog of the sewing machine, as the connecting block is arranged in the connecting groove on the moving bracket, the moving bracket is connected with the first rotating pin, the first rotating pin is eccentrically connected with the first sliding block, the first sliding block is clamped in the first sliding groove of the connecting block, and the connecting block and the moving bracket are fixed together by the fixing bolt in the kidney-shaped hole on the moving bracket; in this way, when the height position of the feed dog needs to be adjusted, the fixing bolt in the kidney-shaped hole is loosened; then, the first rotating pin is rotated to enable the first sliding block to drive the connecting block to move, so that the feed dog frame is adjusted to a set height position; and then the bolts in the kidney-shaped holes are screwed down under the condition of keeping the feed dog frame at the set height position, and the connecting blocks and the moving support are fixed. Therefore, the invention aims to provide the height adjusting mechanism of the feed dog of the sewing machine and the using method thereof, which can conveniently adjust the height of the feed dog, and has simple structure and convenient use.
Drawings
Fig. 1 is a schematic perspective view showing a height adjusting mechanism of a feed dog of a sewing machine according to the present invention.
Fig. 2 is an exploded view showing a height adjusting mechanism of a feed dog of a sewing machine according to the present invention, and a needle plate is not shown.
Fig. 3 shows a schematic view of a height adjusting mechanism of a feed dog of the sewing machine, which is seen in the direction of arrow F in fig. 1, and a needle plate is not shown.
Fig. 4 shows an exploded view of the moving carriage, the connecting block, the feed dog and its connecting members.
Fig. 5 shows a schematic perspective view of the moving support.
Fig. 6 shows a schematic perspective view of the connection block.
Fig. 7 is a schematic structural view of the first rotation pin and the first slider.
Description of element reference numerals
1. Feed dog frame
2. Feed dog
3. Connecting block
4. Sport bracket
5. Connecting groove
6. First rotating pin
7. First slider
8. First chute
9. Waist-shaped hole
10. Fixing bolt
11. Threaded hole
12. First side surface
13. Second side surface
14. First end surface
15. Second end face
16. Connecting hole
17 Straight-line-shaped clamping groove
18. Dental frame base
19. Feed lifting fork
20. Cloth feeding shaft
21. Lifting shaft
22. Second slider
23. Second chute
24. Needle plate
25. Slotted hole
26. Screw bolt
27. Connecting pin
28. Clamp spring
29. Sliding surface
30. Second rotating pin
Detailed Description
Further advantages and effects of the present invention will become apparent to those skilled in the art from the disclosure of the present invention, which is described by the following specific examples.
It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the invention to the extent that it can be practiced, since modifications, changes in the proportions, or otherwise, used in the practice of the invention, are not intended to be critical to the essential characteristics of the invention, but are intended to fall within the spirit and scope of the invention. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the invention, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the invention may be practiced.
As shown in fig. 1 to 4, the invention provides a height adjusting mechanism of a feed dog of a sewing machine, which comprises a feed dog frame 1, a connecting block 3 and a moving bracket 4, wherein the feed dog frame 1 is connected to the connecting block 3, and the connecting block 3 is arranged on the moving bracket 4; the moving support 4 is driven by the cloth feeding mechanism to drive the connecting block 3 and the cloth feeding tooth frame 1 to move together so as to convey cloth;
the movable support 4 is connected with a first rotating pin 6, the first rotating pin 6 is eccentrically connected with a first sliding block 7, the connecting block 3 is provided with a first sliding groove 8, the first sliding block 7 is clamped in the first sliding groove 8, and the first rotating pin 6 can rotate to drive the first sliding block 7 to drive the connecting block 3 to move;
the movable support 4 is further provided with a waist-shaped hole 9 which extends up and down, a detachable fixing bolt 10 is arranged in the waist-shaped hole 9, the connecting block 3 is provided with a threaded hole 11, and the fixing bolt 10 penetrates through the waist-shaped hole 9 and is screwed in the threaded hole 11 of the connecting block 3.
In the height adjusting mechanism of a feed dog of a sewing machine of the present invention, referring to fig. 1 to 4, since the connecting block 3 is installed in the connecting slot 5 on the moving bracket 4, the moving bracket 4 is connected with the first rotating pin 6, the first rotating pin 6 is eccentrically connected with the first sliding block 7, the first sliding block 7 is clamped in the first sliding slot 8 of the connecting block 3, and the connecting block 3 and the moving bracket 4 are fixed together by the fixing bolt 10 in the kidney-shaped hole 9 on the moving bracket 4; in this way, when the height position of the feed dog 2 needs to be adjusted, the fixing bolt 10 in the kidney-shaped hole 9 is loosened; then, the first rotating pin 6 is rotated to enable the first sliding block 7 to drive the connecting block 3 to move, so that the feed dog frame 1 is adjusted to a set height position; and then the bolt in the kidney-shaped hole 9 is screwed down to fix the connecting block 3 and the moving bracket 4 under the condition that the feed dog holder 1 is kept at the set height position. Therefore, the invention aims to provide the height adjusting mechanism of the feed dog of the sewing machine and the using method thereof, which can conveniently adjust the height of the feed dog 2, and has simple structure and convenient use.
In a preferred embodiment of the height adjusting mechanism of the feed dog of the sewing machine of the present invention, as shown in fig. 3, the moving bracket 4 is provided with a connecting slot, and the connecting block 3 is mounted in the connecting slot 5; under the driving of the first rotating pin 6, the first slider 7 can drive the connection block 3 to slide up and down along the connection slot 5, the connection slot 5 can limit the position of the connection block 3 in the horizontal direction, and referring to fig. 3, 5 and 6, the connection slot 5 has a first side 12 and a second side 13 which are relatively parallel and extend up and down; the connecting block 3 has a first end surface 14 slidably engaged with the first side surface 12 and a second end surface 15 slidably engaged with the second side surface 13, so that the first rotating pin 6 rotates to apply an upward or downward thrust to the first slider 7, thereby driving the first slider 7 to move up and down along the connecting slot 5. As a preferred embodiment, as shown in fig. 3, 6 and 7, the first sliding groove 8 extends along a horizontal direction, the first sliding block 7 is cylindrical, the cylindrical surface of the first sliding block 7 contacts with the upper and lower sides of the first sliding groove 8, a certain distance is provided between the axis of the first sliding block 7 and the axis of the first rotating pin 6, when the first rotating pin 6 rotates, the first sliding block 7 is driven to rotate around the axis of the first rotating pin 6, and the rotation of the first sliding block 7 can be decomposed into a component that moves horizontally along the first sliding groove 8 and a component that drives the connecting block 3 to move vertically along the connecting groove 5. More preferably, the first slider 7 and the first rotating pin 6 may be integrally formed, or a pin shaft may be eccentrically disposed on the first rotating pin 6, and the cylindrical first slider 7 may be coaxially connected to the pin shaft.
In the height adjusting mechanism of the feed dog of the sewing machine of the invention, the connecting block 3 can move along the connecting groove 5 and can be fixed on the moving bracket 4, as a preferred embodiment, as shown in fig. 3, 4 and 5, two kidney-shaped holes 9 are arranged on the moving bracket 4, two threaded holes 11 are arranged on the connecting block 3, and one fixing bolt 10 is penetrated in each kidney-shaped hole 9. When the height position of the feed dog frame 1 needs to be adjusted, the fixing bolt 10 is loosened; when the feed dog 1 is adjusted to the set position, the fixing bolt 10 is screwed into the screw hole 11 of the connecting block 3, so that the connecting block 3 and the moving bracket 4 are fixed. In order to facilitate the connection of the first rotating pin 6 to the moving bracket 4, as shown in fig. 1, 3 and 5, a connecting hole 16 is provided on the moving bracket 4, the first rotating pin 6 is pivoted in the connecting hole 16, a clamp spring 28 is connected to the first rotating pin 6, and the clamp spring 28 clamps the first rotating pin 6 so that the first rotating pin 6 cannot axially move in the connecting hole 16; in order to facilitate the rotation of the first rotation pin 6, as shown in fig. 7, the end surface of the first rotation pin 6 is provided with a "in-line" slot 17, and the first rotation pin 6 may be rotated by inserting a "in-line" screwdriver into the "in-line" slot 17.
In the height adjusting mechanism of the feed dog of the sewing machine, after the feed dog 1 is adjusted to the set height, the feed mechanism can drive the feed dog 1 to move to transfer the cloth. Referring to fig. 1, the feed dog 1 is fixed on top of the connection block 3 by screws 26. A needle plate 24 is arranged above the feed dog frame 1, a slotted hole 25 is arranged on the needle plate 24, a feed dog 2 is arranged at the top of the feed dog frame 1, the feed dog 2 is exposed from the slotted hole 25 on the needle plate 24 and protrudes out of the upper surface of the needle plate 24, when the sewing operation is carried out, cloth is paved on the upper surface of the needle plate 24, and the feed dog frame 1 is driven by a feed structure to move in a way of being close to a quadrangle in track: a) The cloth feeding mechanism drives the cloth feeding tooth frame 1 to move upwards to jack up the cloth; b) The cloth feeding mechanism drives the cloth feeding tooth frame 1 to move forwards for a certain distance along the horizontal direction; c) Then the cloth feeding mechanism drives the cloth feeding tooth frame 1 to descend so that the cloth feeding tooth 2 moves below the upper surface of the needle plate 24, and the cloth is placed on the needle plate 24; d) Then the cloth feeding mechanism drives the cloth feeding tooth frame 1 to retract backwards. The cloth can be transferred forward for a certain distance every cycle according to the steps a) to d). As a preferred embodiment, as shown in fig. 1 to 3, the cloth feeding mechanism includes a frame 18 and a lifting fork 19, the frame 18 is driven to rotate by a cloth feeding shaft 20, and the lifting fork 19 is driven to rotate by a lifting shaft 21; one end of the moving bracket 4 is hinged with the dental frame seat 18, and the end of the moving bracket 4 can be hinged on the dental frame seat 18 by adopting a connecting pin 27; the other end of the moving bracket 4 is hinged with a second sliding block 22, a second sliding groove 23 is arranged on the lifting tooth fork 19, and the second sliding block 22 is connected in the second sliding groove 23 in a sliding way. More preferably, the second slider 22 has sliding surfaces 29 respectively engaged with both side surfaces of the second sliding groove 23, and the second slider 22 is rotatable with respect to the second rotation pin 30 and slidable along the second sliding groove 23. The movement in steps a) to d) can be achieved by the movement of the cloth feed shaft 20 and the feed lifting shaft 21 in cooperation with each other. Referring to fig. 1, when the cloth feeding shaft 20 drives the frame 18 to rotate forward or backward, the frame 18 can drive the moving bracket 4 to move horizontally and has a vertical movement component, the horizontal movement component of the frame 18 can move the cloth feeding frame 1 forward or backward, and the vertical movement component of the frame 18 can move the cloth feeding frame 1 upward or downward; at the same time, the lifting shaft 21 is matched with the rotation movement of the cloth feeding shaft 20, so that the lifting fork 19 rotates to be matched with the movement of the frame seat 18, and the moving bracket 4 is lifted or lowered by a certain height, so that the cloth feeding teeth 2 are kept in a basically horizontal state. When the moving bracket 4 moves horizontally, the second slider 22 slides along the second chute 23.
Correspondingly, the invention also provides a use method of the height adjusting mechanism of the feed dog of the sewing machine, the height adjusting mechanism of the feed dog of the sewing machine is used for operation,
1) Loosening the fixing bolt 10 in the kidney-shaped hole 9;
2) Rotating the first rotating pin 6 to enable the first sliding block 7 to drive the connecting block 3 to move along the connecting groove 5, so that the feed dog 1 is adjusted to a set height position;
3) The feed dog 1 is held at the set height position and the bolts in the kidney holes 9 are tightened.
Preferably, in the above step 2), the height of the feed dog 2 protruding from the upper surface of the needle plate 24 is measured with a measuring tool such as a measuring block, thereby ensuring that the feed dog holder 1 is adjusted to a set height position.
Based on the technical scheme of the embodiment, the height adjusting mechanism of the feed dog of the sewing machine and the using method of the height adjusting mechanism can conveniently adjust the height of the feed dog 2, and fewer parts are required to be adjusted when the height of the feed dog 2 is adjusted, so that the height adjusting mechanism is simple in structure and convenient to use.
In summary, the present invention effectively overcomes the disadvantages of the prior art and has high industrial utility value.
The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications and variations of the invention be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.
Claims (8)
1. The height adjusting mechanism of the feed dog of the sewing machine is characterized by comprising a feed dog frame (1), a connecting block (3) and a moving bracket (4), wherein the feed dog frame (1) is connected to the connecting block (3), and the connecting block (3) is arranged on the moving bracket (4); the moving support (4) is driven by the cloth feeding mechanism to drive the connecting block (3) and the cloth feeding tooth frame (1) to move together so as to convey cloth;
the movable support (4) is connected with a first rotating pin (6), the first rotating pin (6) is eccentrically connected with a first sliding block (7), the connecting block (3) is provided with a first sliding groove (8), the first sliding block (7) is clamped in the first sliding groove (8), the first sliding groove (8) extends along the horizontal direction, the first sliding block (7) is cylindrical, and the first rotating pin (6) can rotate to drive the first sliding block (7) to drive the connecting block (3) to move;
the movable support (4) is also provided with a kidney-shaped hole (9) extending up and down, a detachable fixing bolt (10) is arranged in the kidney-shaped hole (9), the connecting block (3) is provided with a threaded hole (11), and the fixing bolt (10) passes through the kidney-shaped hole (9) and is screwed in the threaded hole (11) of the connecting block (3);
the movable support (4) is provided with a connecting groove, and the connecting block (3) is arranged in the connecting groove (5); the connecting groove (5) is provided with a first side surface (12) and a second side surface (13) which are arranged in parallel relatively and extend up and down; the connecting block (3) has a first end face (14) which is in sliding engagement with the first side face (12) and a second end face (15) which is in sliding engagement with the second side face (13).
2. The height adjusting mechanism for a feed dog of a sewing machine according to claim 1, wherein: the movable support (4) is provided with two kidney-shaped holes (9), the connecting block (3) is provided with two threaded holes (11), and each kidney-shaped hole (9) is internally provided with one fixing bolt (10) in a penetrating mode.
3. The height adjusting mechanism for a feed dog of a sewing machine according to claim 1, wherein: the moving bracket (4) is provided with a connecting hole (16), and the first rotating pin (6) is pivoted in the connecting hole (16); the end face of the first rotating pin (6) is provided with a straight-line-shaped clamping groove (17).
4. The height adjusting mechanism for a feed dog of a sewing machine according to claim 1, wherein: the cloth feeding mechanism comprises a frame seat (18) and a lifting fork (19), wherein the frame seat (18) is driven by a cloth feeding shaft (20) to rotate, and the lifting fork (19) is driven by a lifting shaft (21) to rotate; one end of the moving support (4) is hinged with the dental framework seat (18), the other end of the moving support (4) is hinged with a second sliding block (22), a second sliding groove (23) is formed in the tooth lifting fork (19), and the second sliding block (22) is slidably connected in the second sliding groove (23).
5. The height adjusting mechanism for feed dog of sewing machine according to claim 4, wherein: the second sliding block (22) is provided with sliding surfaces (29) which are respectively matched with two side surfaces of the second sliding groove (23).
6. The height adjusting mechanism for a feed dog of a sewing machine according to claim 1, wherein: the feed dog frame (1) is fixed at the top of the connecting block (3) by screws (26).
7. The height adjusting mechanism for a feed dog of a sewing machine according to claim 1, wherein: a needle plate (24) is arranged above the feed dog frame (1), a slotted hole (25) is arranged on the needle plate (24), and feed dogs (2) at the top of the feed dog frame (1) are exposed from the slotted hole (25).
8. A method for using the height adjusting mechanism of the feed dog of the sewing machine, which is characterized in that the height adjusting mechanism of the feed dog of the sewing machine is used for operation, and the method is characterized in that:
1) Loosening the fixing bolt (10) in the kidney-shaped hole (9);
2) Rotating the first rotating pin (6) to enable the first sliding block (7) to drive the connecting block (3) to move along the connecting groove (5), so that the feed dog frame (1) is adjusted to a set height position;
3) The feed dog (1) is kept at the set height position and the bolts in the kidney-shaped holes (9) are screwed down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811639328.2A CN109440307B (en) | 2018-12-29 | 2018-12-29 | Height adjusting mechanism of feed dog of sewing machine and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811639328.2A CN109440307B (en) | 2018-12-29 | 2018-12-29 | Height adjusting mechanism of feed dog of sewing machine and using method thereof |
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| Publication Number | Publication Date |
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| CN109440307A CN109440307A (en) | 2019-03-08 |
| CN109440307B true CN109440307B (en) | 2023-06-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811639328.2A Active CN109440307B (en) | 2018-12-29 | 2018-12-29 | Height adjusting mechanism of feed dog of sewing machine and using method thereof |
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| CN (1) | CN109440307B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111748919B (en) * | 2019-03-29 | 2022-06-21 | 杰克科技股份有限公司 | Tooth rack height adjusting mechanism of lockstitch sewing machine |
| CN112160078B (en) * | 2020-08-13 | 2021-11-02 | 杰克缝纫机股份有限公司 | Cloth feeding tooth frame adjusting mechanism and overedger |
| CN117208751B (en) * | 2023-11-09 | 2024-02-02 | 山东新沙单轨运输装备有限公司 | High-performance heavy rail |
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| US4295434A (en) * | 1979-10-24 | 1981-10-20 | Union Special Corporation | Feed mechanism for sewing machines |
| CN1270246A (en) * | 1999-02-08 | 2000-10-18 | 重机株式会社 | Mechanism for regulating height of pay-off teeth |
| CN208266401U (en) * | 2018-05-11 | 2018-12-21 | 浙江美机缝纫机有限公司 | The Tai Ya mechanism of sewing machine |
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| JPH05277271A (en) * | 1992-04-02 | 1993-10-26 | Juki Corp | Feed dog descending device |
| JPH119867A (en) * | 1997-06-26 | 1999-01-19 | Brother Ind Ltd | Feed dog height position adjustor for sewing machine |
| DE59901641D1 (en) * | 1998-04-15 | 2002-07-11 | G M Pfaff Ag I I | SEWING OR EMBROIDERING MACHINE |
| CN2895471Y (en) * | 2006-04-24 | 2007-05-02 | 飞跃股份有限公司 | Crease-resisting apparatus of flat seamer |
| CN204174392U (en) * | 2014-10-13 | 2015-02-25 | 天津华唐缝纫机制造有限公司 | With the industrial sewing machine of feed dog height governor motion |
| CN104878522B (en) * | 2015-05-21 | 2020-09-11 | 陈贤德 | Feed dog frame for sewing machine |
| CN204780157U (en) * | 2015-05-21 | 2015-11-18 | 湖南省兴德缝制自动化有限公司 | Work feed retainer that sewing machine used |
| CN108998899B (en) * | 2018-08-16 | 2021-05-11 | 杰克缝纫机股份有限公司 | Automatic improve work feed mechanism of receiving line |
| CN209428707U (en) * | 2018-12-29 | 2019-09-24 | 杰克缝纫机股份有限公司 | The height adjustment mechanism of cloth-feeding teeth of sewing machine |
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- 2018-12-29 CN CN201811639328.2A patent/CN109440307B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4295434A (en) * | 1979-10-24 | 1981-10-20 | Union Special Corporation | Feed mechanism for sewing machines |
| CN1270246A (en) * | 1999-02-08 | 2000-10-18 | 重机株式会社 | Mechanism for regulating height of pay-off teeth |
| CN208266401U (en) * | 2018-05-11 | 2018-12-21 | 浙江美机缝纫机有限公司 | The Tai Ya mechanism of sewing machine |
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|---|---|
| CN109440307A (en) | 2019-03-08 |
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