CN106592117B - Automatic jump type lifting mechanism of presser foot of sewing machine and sewing machine with automatic jump type lifting mechanism - Google Patents
Automatic jump type lifting mechanism of presser foot of sewing machine and sewing machine with automatic jump type lifting mechanism Download PDFInfo
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- CN106592117B CN106592117B CN201710025738.7A CN201710025738A CN106592117B CN 106592117 B CN106592117 B CN 106592117B CN 201710025738 A CN201710025738 A CN 201710025738A CN 106592117 B CN106592117 B CN 106592117B
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- sewing machine
- presser foot
- lifting
- shaft
- automatic jump
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B29/00—Pressers; Presser feet
- D05B29/02—Presser-control devices
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05D—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES D05B AND D05C, RELATING TO SEWING, EMBROIDERING AND TUFTING
- D05D2207/00—Use of special elements
- D05D2207/05—Magnetic devices
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- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The invention discloses an automatic jump type lifting mechanism of a presser foot of a sewing machine and the sewing machine thereof. The invention aims to provide the automatic jump type lifting mechanism for the presser foot of the sewing machine and the sewing machine thereof, which are convenient and quick to lift the presser foot and immediately restore the original state, convenient and quick to adjust and good in stability; and the sewing efficiency is improved, and the operation and the use are convenient.
Description
Technical Field
The invention belongs to the field of sewing machine manufacturing and processing, relates to a lifting structure for lifting a presser foot by one key during the working of a sewing machine, and particularly relates to an automatic jump type lifting mechanism for the presser foot of the sewing machine and the sewing machine thereof.
Background
The sewing machine is widely used sewing mechanical equipment and is mainly used for sewing textiles. The sewing machine is widely used in the industries of bags, clothes, leather and the like at present, replaces the original manual manufacturing, saves the cost and improves the efficiency.
However, when using sewing machines in the industries of bags, clothes, leather, sofa, etc., it often happens that the material height is suddenly higher in a certain sewing area than in other places: such as the joint folds of bags, leather and sofas, the sewing machine needs to be suitable for jumping from 1-2 layers of materials to 3-5 layers of materials, even 7-8 layers; as shown in fig. 1, in the sewing process, the inner presser 1001 and the outer presser 1002 of the sewing machine are lifted up and down alternately, so that the cloth 2001 advances or retreats, and the lifting height of the presser is h1; however, when the cloth bulge 2002 with the height s suddenly appears in the front, the existing sewing machine cannot normally sew, and the presser foot cannot be lifted up; at this time, the opening cover must be detached, and a presser foot height adjusting screw 1004 (see fig. 2 and 3) for adjusting and controlling the presser foot is used for lifting the height of the presser foot post 1003; the motion track of the presser foot swing crank 1005 assembly is changed, so that the lifting heights of the inner presser foot 1001 and the outer presser foot 1002 are increased to be more than s, and the sewing on the cloth bulge can be realized.
However, this method is cumbersome in that it requires opening the housing (or rubber stopper on the housing, adjusting the presser height adjustment screw 1004, first rotating the drive wheel until the presser is lifted or lowered from the contact pin plate, and then loosening or adjusting the presser height adjustment screw to achieve the presser height adjustment.
The mode has the trouble of adjusting, the lifting movement track of the presser foot after adjustment is shown in fig. 4 and 5, the lifting height of the presser foot is increased at the time t1, and the lifting height of the inner presser foot 1001 and the outer presser foot 1002 is h2 in an interactive way at the time after the lifting is kept unchanged; the former height is h1, and the lifting height of the sewing machine for keeping h2 is always unchanged after adjustment (h 2 is more than or equal to s > h 1). In this case, the presser foot is lifted too high, when only a small area has a cloth bulge 2002, the lifting height of the presser foot is adjusted to be high, and when the normal cloth layer works, the reciprocating sound of the presser foot striking the needle plate is large, the stability is poor, and the needle is easy to damage or collide with a sewing needle; and the round-trip time of the presser foot is prolonged, so that the sewing efficiency is reduced intangibly.
The prior method has the defect of irreconcilable.
Disclosure of Invention
The invention aims to solve the problems, and provides the automatic jump type lifting mechanism for the presser foot of the sewing machine and the sewing machine thereof, which are convenient and quick to lift the presser foot and immediately restore to the original state, convenient and quick to adjust and good in stability; and the sewing efficiency is improved, and the operation and the use are convenient.
In order to achieve the above purpose, the invention adopts the following technical scheme: the utility model provides an automatic jump formula hoist mechanism of sewing machine presser foot and sewing machine thereof, has cross connecting rod (42) at lift shaft support (21) in current casing (80) are articulated through support connecting plate (24) in the side of being away from the operating side, cross connecting rod (42) are articulated the one end of lifting lever (4) perpendicularly downwards, the other end fixedly connected with drive shaft (5) of lifting lever (4), and drive shaft (5) pass behind the rear side wall of casing (80) through fork type shifting post (51) and electro-magnet (7) swing joint.
Further, a fork-shaped connecting column (71) is arranged at the front end of the electromagnet (7), a poking shaft (73) is arranged at the opening of the fork-shaped connecting column (71), and the poking shaft (73) is positioned at the middle position of two poking teeth of the fork-shaped poking column (51).
Further, the electromagnet (7) is fixed on the outer surface of the shell (80) through a mounting bracket (72) connected with the outer surface.
Further, a connecting shaft seat (6) is arranged at the position of the rear side wall of the driving shaft (5) penetrating through the machine shell (80), and the driving shaft (5) movably penetrates through a sleeve (61) arranged on the connecting shaft seat (6).
Further, one end of the lifting lever (4) is provided with a protruding column body, and the protruding column body is embedded in a lower end connecting hole of the cross connecting rod (42); the other end of the lifting lever (4) is in a cylindrical tube shape, and a driving shaft (5) is fixedly connected in the lifting lever.
Further, a lever bottom plate (41) is arranged on the back surface of the lifting lever (4) to cover the lower end connecting hole of the cross connecting rod (42), and the lever bottom plate (41) is sleeved on the outer surface of the cylindrical tubular structure at the other end of the lifting lever (4).
Further, a bracket connecting plate (24) connected to the lifting shaft bracket (21) is arranged in a fastening mounting hole of the lifting shaft bracket (21).
The invention relates to a sewing machine with an automatic jump type lifting mechanism for a presser foot of a sewing machine, which adopts the jump type lifting mechanism for the presser foot.
The invention has the beneficial effects that: the invention provides an automatic jump type lifting mechanism of a presser foot of a sewing machine and the sewing machine thereof, which are convenient and quick to lift the presser foot and immediately restore to the original state, convenient and quick to adjust and good in stability; and the sewing efficiency is improved, and the operation and the use are convenient.
Drawings
FIG. 1 is a schematic view of the motion of a foot when a conventional sewing machine is operated on cloth of the same thickness.
FIG. 2 is a schematic view of a stitch lifting connection structure of a conventional sewing machine.
FIG. 3 is a schematic view of a driving part structure for driving stitch lifting of a conventional sewing machine.
FIG. 4 is a schematic diagram of stitch motion of a conventional sewing machine when the conventional sewing machine works on cloth with different thicknesses (normal thickness and cloth protrusions) at the same time.
Fig. 5 is a schematic diagram of the motion trace of the inner and outer pins in fig. 4.
Fig. 6 is a schematic view of the stitch motion after the automatic jump lift mechanism of the presser foot of the present invention is employed.
Fig. 7 is a schematic diagram of the motion trace of the inner and outer pins in fig. 6.
Fig. 8 is a schematic perspective view of an automatic jump type lifting mechanism of the presser foot according to the present invention.
Fig. 9 is a schematic top view of fig. 8.
Fig. 10 is a schematic diagram of the movement mechanism connection in fig. 8.
Fig. 11 is a left-hand schematic view of fig. 10.
Fig. 12 is a schematic top view of fig. 10.
Fig. 13 is a schematic front view of fig. 10.
The text labels in the figures are expressed as: 1001. an inner presser foot; 1002. an outer presser foot; 1003. a presser foot post; 1004. a presser foot height adjusting screw; 1005. a presser foot swing crank;
2001. distributing materials; 2002. the cloth is convex;
2. lifting the adjusting shaft; 21. a lifting shaft bracket; 22. a support shaft; 24. a bracket connecting plate;
3. a presser foot lifting shaft; 31. lifting and adjusting the crank connecting rod;
4. lifting the lever; 41. a lever bottom plate; 42. a cross connecting rod;
5. a drive shaft; 51. a fork-type shifting column; 6. connecting a shaft seat; 61. a sleeve;
7. an electromagnet; 71. a fork-type connecting column; 72. a mounting bracket; 73. a dial shaft;
80. a housing; 81. lifting the adjusting shaft spring;
h1 is the normal presser foot lifting height; s is the height of the cloth bulge; h2 is the lifting height of the existing presser foot after adjustment;
t1 is the adjustment time point, and t2 is the recovery time point.
Detailed Description
In order that those skilled in the art may better understand the technical solutions of the present invention, the following detailed description of the present invention with reference to the accompanying drawings is provided for exemplary and explanatory purposes only and should not be construed as limiting the scope of the present invention.
As shown in fig. 8 to 13, the specific structure of the present invention is: the utility model provides an automatic jump formula elevating system of sewing machine presser foot and sewing machine thereof, is articulated with cross connecting rod 42 through support connecting plate 24 in the lift shaft support 21 in current casing 80 side that is facing away from the operating side, cross connecting rod 42 is articulated the one end of lifting lever 4 perpendicularly downwards, the other end fixedly connected with drive shaft 5 of lifting lever 4, and drive shaft 5 passes behind the wall of casing 80 through fork type shifting post 51 and electromagnet 7 swing joint.
Preferably, a fork-shaped connecting column 71 is arranged at the front end of the electromagnet 7, a poking shaft 73 is arranged at the opening of the fork-shaped connecting column 71, and the poking shaft 73 is positioned at the middle position of two poking teeth of the fork-shaped poking column 51.
Preferably, the electromagnet 7 is fixed on the outer surface of the casing 80 through a mounting bracket 72 connected with the outer surface.
Preferably, the driving shaft 5 passes through the rear sidewall of the casing 80 and is provided with a connecting shaft seat 6, and the driving shaft 5 movably passes through a sleeve 61 provided on the connecting shaft seat 6.
Preferably, one end of the lifting lever 4 is provided with a protruding column body, which is embedded in the lower end connecting hole of the cross connecting rod 42; the other end of the lifting lever 4 is provided with a cylindrical tube shape, and the inside of the lifting lever is fixedly connected with a driving shaft 5.
Preferably, the back of the lifting lever 4 is provided with a lever bottom plate 41 to cover the lower end connecting hole of the cross connecting rod 42, and the lever bottom plate 41 is sleeved on the outer surface of the cylindrical tubular structure at the other end of the lifting lever 4.
Preferably, the bracket connection plate 24 connected to the lift shaft bracket 21 is installed in the fastening installation hole of the lift shaft bracket 21.
The invention relates to a sewing machine with an automatic jump type lifting mechanism for a presser foot of a sewing machine, which adopts the jump type lifting mechanism for the presser foot.
In this example, no specific connection relation description is given about the power supply and the start-stop control of the electromagnet 7, and in view of the fact that the prior art can be realized without doubt, the present invention is not focused here, and therefore, description about the power supply and the start-stop of the electromagnet is omitted.
When the sewing machine is particularly used, as shown in fig. 6-7, in the sewing process of normal double-layer cloth, when a cloth bulge 2002 at a folding edge of a case is encountered, an electromagnet is started at a t1 adjusting moment point to adjust and lift a presser foot; at the moment, the stroke of the presser foot is unchanged from h1, but the height of the presser foot moves upwards by s and skips over the cloth bulge 2002, so that the sewing process of protruding from the flat cloth to the thick cloth is realized; and stopping the electromagnet at the time t2, recovering the presser foot to the original state, and recovering the original processing mode of the sewing machine, wherein the height of the presser foot falls back to the initial condition. Therefore, the normal processing of the sewing machine is very little affected, the presser foot is not required to be lifted frequently, and the production efficiency is greatly improved.
In this process, as shown in fig. 8-13, when the electromagnet 7 is started at time t1, the fork-shaped connecting column 71 and the shifting shaft 73 connected to the front end of the electromagnet 7 drive the fork-shaped shifting column 51 to rotate downwards (refer to fig. 12-13), so as to drive the driving shaft 5 fixedly connected to the fork-shaped shifting column 51 to deflect;
the deflection of the driving shaft 5 drives the lifting lever 4 to deflect downwards and pulls the hinged cross connecting rod 42 to move downwards; while the downward movement of the cross link 42 simultaneously causes the downward deflection of the lift shaft bracket 21;
the downward deflection of the lifting shaft bracket 21 causes the lifting adjusting crank link 31 to drive the presser foot lifting shaft 3 to deflect, thereby causing the presser foot post 1003 to travel upward (conventionally, the cover is to be disassembled, and the presser foot height adjusting screw 1004 for controlling the presser foot lifting is adjusted, as shown in fig. 2 and 3).
By adopting the technical scheme, the presser foot is convenient and rapid to lift and immediately returns to the original state, and is convenient and rapid to adjust and good in stability; and the sewing efficiency is improved, and the operation and the use are convenient.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. The foregoing is merely illustrative of the preferred embodiments of this invention, and it is noted that there is objectively no limit to the specific structure disclosed herein, since numerous modifications, adaptations and variations can be made by those skilled in the art without departing from the principles of the invention, and the above-described features can be combined in any suitable manner; such modifications, variations and combinations, or the direct application of the inventive concepts and aspects to other applications without modification, are contemplated as falling within the scope of the present invention.
Claims (6)
1. The automatic jump type lifting mechanism for the presser foot of the sewing machine is characterized in that a cross connecting rod (42) is hinged to one side, opposite to an operating side, of a lifting shaft bracket (21) in an existing machine shell (80) through a bracket connecting plate (24), one end of a lifting lever (4) is vertically hinged downwards to the cross connecting rod (42), the other end of the lifting lever (4) is fixedly connected with a driving shaft (5), and the driving shaft (5) is movably connected with an electromagnet (7) through a fork type poking column (51) after penetrating through a rear side wall of the machine shell (80);
the front end of the electromagnet (7) is provided with a fork-shaped connecting column (71), a poking shaft (73) is arranged at the opening of the fork-shaped connecting column (71), and the poking shaft (73) is positioned at the middle position of two poking teeth of the fork-shaped poking column (51);
one end of the lifting lever (4) is provided with a protruding column body, and the protruding column body is embedded in a lower end connecting hole of the cross connecting rod (42); the other end of the lifting lever (4) is in a cylindrical tube shape, and a driving shaft (5) is fixedly connected in the lifting lever.
2. The automatic jump lift mechanism of a presser foot of a sewing machine according to claim 1, wherein said electromagnet (7) is fixed to the outer surface of the housing (80) by a mounting bracket (72) attached to the outer surface.
3. The automatic jump lifting mechanism of a presser foot of a sewing machine according to claim 1, wherein the driving shaft (5) is provided with a connecting shaft seat (6) at a rear side wall of the machine casing (80), and the driving shaft (5) is movably penetrated in a sleeve (61) provided on the connecting shaft seat (6).
4. The automatic jump lifting mechanism of the presser foot of the sewing machine according to claim 1, wherein a lever bottom plate (41) is arranged on the back surface of the lifting lever (4) to cover the lower end connecting hole of the cross connecting rod (42), and the lever bottom plate (41) is sleeved on the outer surface of the cylindrical tubular structure at the other end of the lifting lever (4).
5. The automatic jump lift mechanism of a presser foot of a sewing machine according to claim 1, characterized in that a bracket connecting plate (24) connected to the lift shaft bracket (21) is installed in a fastening installation hole of the lift shaft bracket (21).
6. A sewing machine of the automatic jump lift mechanism of a sewing machine presser foot, characterized in that it employs the automatic jump lift mechanism of a sewing machine presser foot according to any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710025738.7A CN106592117B (en) | 2017-01-13 | 2017-01-13 | Automatic jump type lifting mechanism of presser foot of sewing machine and sewing machine with automatic jump type lifting mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710025738.7A CN106592117B (en) | 2017-01-13 | 2017-01-13 | Automatic jump type lifting mechanism of presser foot of sewing machine and sewing machine with automatic jump type lifting mechanism |
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| CN106592117A CN106592117A (en) | 2017-04-26 |
| CN106592117B true CN106592117B (en) | 2023-06-30 |
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| CN201710025738.7A Active CN106592117B (en) | 2017-01-13 | 2017-01-13 | Automatic jump type lifting mechanism of presser foot of sewing machine and sewing machine with automatic jump type lifting mechanism |
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| CN114395864A (en) * | 2021-12-30 | 2022-04-26 | 安徽信息工程学院 | Portable electronic sewing machine |
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| CN104762762A (en) * | 2015-04-27 | 2015-07-08 | 新通宇缝纫机股份有限公司 | Presser foot height adjusting mechanism for sewing machine |
| CN105973137A (en) * | 2016-06-24 | 2016-09-28 | 杰克缝纫机股份有限公司 | Thin-thick material detection device and sewing machine control system and method |
| CN206570506U (en) * | 2017-01-13 | 2017-10-20 | 湖南兴德缝制股份有限公司 | A kind of automatic great-jump-forward hoisting mechanism of sewing-machine foot and its sewing machine |
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2017
- 2017-01-13 CN CN201710025738.7A patent/CN106592117B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05161771A (en) * | 1991-12-18 | 1993-06-29 | Juki Corp | Fabric conveyance control device for sewing machine |
| EP2105526A1 (en) * | 2008-03-29 | 2009-09-30 | Dürkopp Adler AG | Sewing machine |
| CN101748564A (en) * | 2008-12-04 | 2010-06-23 | Juki株式会社 | Control device and control method of sewing machine |
| CN103590198A (en) * | 2012-08-15 | 2014-02-19 | 上海贵衣缝纫设备有限公司 | Press foot adjusting structure for extremely thick material in pattern sewing machine |
| CN203451794U (en) * | 2013-09-12 | 2014-02-26 | 上海标准海菱缝制机械有限公司 | Mechanism for instantaneously adjusting presser foot alternation of sewing machine |
| CN104032491A (en) * | 2014-06-24 | 2014-09-10 | 新杰克缝纫机股份有限公司 | Automatic presser foot lifting mechanism for sewing machine |
| CN104762762A (en) * | 2015-04-27 | 2015-07-08 | 新通宇缝纫机股份有限公司 | Presser foot height adjusting mechanism for sewing machine |
| CN105973137A (en) * | 2016-06-24 | 2016-09-28 | 杰克缝纫机股份有限公司 | Thin-thick material detection device and sewing machine control system and method |
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