CN113529289B - Magnetic-induction synchronous type sewing machine feeding mechanism and using method thereof - Google Patents
Magnetic-induction synchronous type sewing machine feeding mechanism and using method thereof Download PDFInfo
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- CN113529289B CN113529289B CN202110602833.5A CN202110602833A CN113529289B CN 113529289 B CN113529289 B CN 113529289B CN 202110602833 A CN202110602833 A CN 202110602833A CN 113529289 B CN113529289 B CN 113529289B
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- pressing plate
- cloth
- feed dog
- sewing machine
- magnetic
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- 238000009958 sewing Methods 0.000 title claims abstract description 34
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 28
- 230000007246 mechanism Effects 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000003825 pressing Methods 0.000 claims abstract description 127
- 239000004744 fabric Substances 0.000 claims abstract description 115
- 239000000463 material Substances 0.000 claims description 16
- 230000005389 magnetism Effects 0.000 claims description 15
- 230000005540 biological transmission Effects 0.000 claims description 4
- 239000000696 magnetic material Substances 0.000 claims description 4
- 238000004904 shortening Methods 0.000 claims description 4
- 230000037303 wrinkles Effects 0.000 claims description 3
- 210000002421 cell wall Anatomy 0.000 claims description 2
- 230000006698 induction Effects 0.000 claims 6
- 230000009471 action Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 10
- 230000003031 feeding effect Effects 0.000 description 7
- 230000000903 blocking effect Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 4
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- 235000017166 Bambusa arundinacea Nutrition 0.000 description 3
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- 235000015334 Phyllostachys viridis Nutrition 0.000 description 3
- 239000011425 bamboo Substances 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 2
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- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 1
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 235000009120 camo Nutrition 0.000 description 1
- 235000005607 chanvre indien Nutrition 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000011487 hemp Substances 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Classifications
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B29/00—Pressers; Presser feet
- D05B29/06—Presser feet
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B29/00—Pressers; Presser feet
- D05B29/06—Presser feet
- D05B29/10—Presser feet with rollers
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B29/00—Pressers; Presser feet
- D05B29/12—Presser-foot attachment
Abstract
The invention discloses a feeding mechanism of a magnetic-induction synchronous sewing machine and a use method thereof, which belong to the field of sewing machines, wherein an elastically-connected pressing plate is arranged below an existing presser foot body, and is attracted out by a magnetic feeding tooth to press cloth.
Description
Technical Field
The invention relates to the field of sewing machines, in particular to a magnetic-induction synchronous type sewing machine feeding mechanism and a using method thereof.
Background
A sewing machine is a machine that interweaves or sews one or more layers of stitching material by forming one or more stitches on the stitching material with one or more stitching threads. The sewing machine can sew cotton, hemp, silk, wool, artificial fiber and other fabrics, leather, plastic, paper and other products, and the sewn stitch is neat, beautiful, flat, firm, fast in sewing speed and simple and convenient to use. And the artistic forms of hand-push embroidery, computerized embroidery and the like are derived from the hand-push embroidery. The general sewing machine consists of a machine head, a machine seat, a transmission part and an accessory part, wherein the machine head is the main part of the sewing machine. It is composed of four mechanisms of needling, hooking, picking and feeding and auxiliary mechanisms of winding, pressing and tooth falling, etc. the movements of all the mechanisms are reasonably matched, and the mechanisms can be circularly operated to stitch the materials together
The feeding structure of the sewing machine mainly comprises a presser foot and a feed dog, wherein the feed dog mainly moves from back to front, and the feed dog is sunk to back when moving to the forefront and then moves from back to front. The main movable rail is a back-and-forth movement, and the up-and-down movement is only a process which is repeated after the cycle is finished. When the sewing machine is used for sewing, the upper part and the lower part of the presser foot and the cloth feeding teeth clamp the cut pieces in the middle, the presser foot is provided with a presser bar with a spring, the cut pieces are tightly pressed down, the cloth feeding teeth continuously advance from back to front, and the cut pieces are synchronously fed to front.
The existing feeding mechanism has defects, such as the problem that the cloth is wrinkled after sewing due to the dislocation of the upper layer and the lower layer of the cloth caused by the improper pressure of the presser foot and the looseness of the cloth feeding teeth when a plurality of layers of cloth are sewn, particularly the smoother cloth, so that the sewing quality is greatly reduced.
Disclosure of Invention
1. Technical problem to be solved
The invention aims to solve the problems in the prior art and provide a feeding mechanism of a magnetic synchronous sewing machine and a using method thereof, wherein an elastically connected pressing plate is arranged below an existing presser foot body, the pressing plate below the presser foot body is attracted out by a magnetic feeding tooth to press cloth, when the feeding tooth moves forwards, the pressing plate synchronously pushes the cloth forwards along with the feeding tooth by utilizing the action of magnetic attraction, the occurrence of dislocation of upper and lower layers of smooth cloth is effectively reduced, meanwhile, a roller feeding cylinder on the pressing plate reduces the contact area of the cloth and the pressing plate, the surface tooth is changed into point pressure, the friction resistance of the upper layer of cloth is reduced, and when the feeding tooth feeds forwards, the roller feeding cylinder is driven to roll on the upper layer of cloth to play a role of pushing the cloth forwards, so that the synchronous feeding effect is effectively improved, in addition, the elastic pressing plate further pushes the cloth downwards by the action of magnetic attraction to compensate the defect of insufficient pressing force, and the elastic connecting rod can limit the excessive pressing of the elastic pressing plate, and prevent the excessive pressing force of the elastic pressing plate.
2. Technical proposal
In order to solve the problems, the invention adopts the following technical scheme.
The utility model provides a synchronous formula sewing machine feeding mechanism is led to magnetism, includes assorted presser foot body and feed dog, feed dog has magnetism, the mounting groove has been seted up to the lower extreme lateral wall of presser foot body, be provided with the pressure flitch that matches with feed dog in the mounting groove, and the thickness of pressure flitch is less than the degree of depth of mounting groove, fixedly connected with elastic connection layer between the cell wall of pressure flitch and mounting groove, and elastic connection layer's lower surface and pressure flitch's lower surface parallel and level, pressure flitch's lower extreme lateral wall is inlayed and is had a plurality of roller feed section of thick bamboo, and roller feed section of thick bamboo is connected through the inner wall rotation of pivot and mosaic groove. According to the novel pressing foot, the elastic connection pressing plate is arranged below the existing pressing foot body, the pressing plate below the pressing foot body is attracted out by the magnetic feeding teeth to press cloth, when the feeding teeth move forwards, the pressing plate is enabled to push the cloth forwards along with the feeding teeth synchronously by utilizing the action of magnetic attraction, the occurrence of dislocation of upper layers and lower layers of smooth cloth is effectively reduced, meanwhile, the contact area between the cloth and the pressing plate is reduced by the roller feeding cylinder on the pressing plate, the surface teeth are changed into point pressing, the friction resistance of upper-layer cloth is reduced, and when the feeding teeth feed forwards, the roller feeding cylinder is driven to roll on the upper-layer cloth to play a role of pushing the cloth forwards, so that the synchronous feeding effect is effectively improved.
Further, the feed dog comprises a plurality of no magnets and permanent magnets, a plurality of no magnets and permanent magnets are alternately arranged, the widths of each no magnet and each permanent magnet are equal, and in order to enable the feed dog to drive the roller feed cylinder to roll on cloth when the feed dog moves forwards, the magnetism of the feed dog needs to be intermittent, and otherwise, the continuous magnetic attraction enables the roller feed cylinder to keep motionless.
Further, two fifths of the roller feeding cylinder is exposed out of the lower surface of the pressing plate, so that the contact area between cloth and the pressing plate is reduced, the blocking resistance of upper cloth is reduced to keep synchronous movement with the lower layer, and the side wall of the roller feeding cylinder is fixedly connected with a plurality of roller feeding convex points which are arranged at equal intervals, so that the convex point contact is increased, and the effect of pushing the cloth is improved.
Further, the magnetic protrusions are inlaid at one end, far away from the roller conveying cylinder, of the roller conveying protruding points, magnetism of the magnetic protrusions is opposite to that of the permanent magnets, and the magnetic protrusions are attracted downwards under the action of attraction of the opposite magnets when the permanent magnets move forwards, so that the rolling and feeding effects are effectively improved.
Further, a plurality of open cavities are formed in the side wall of the lower end of the pressing plate at intervals with the roller feeding cylinders, the inner wall of each open cavity is fixedly connected with an elastic pressing plate flush with the lower surface of the pressing plate, the elastic pressing plate downwards arches under the action of magnetic attraction of the feeding teeth to further downwards press upper cloth, and therefore the pressing force can be compensated under the condition of insufficient pressing force, and accordingly the condition that the cloth is moved back and forth is effectively reduced.
Further, a plurality of elastic connecting rods are fixedly connected between the upper end side wall of the open cavity and the upper end side wall of the elastic pressing plate, the elasticity of the elastic connecting rods is larger than that of the elastic pressing plate, and the elastic connecting rods can limit excessive deformation of the elastic pressing plate, so that the condition of overlarge pressing force on cloth is effectively reduced.
Further, the inner wall of the elastic pressing plate is inlaid with a plurality of magnetic balls, the diameters of the magnetic balls are sequentially reduced from the middle part to the two sides, the larger the diameters of the magnetic balls are, the larger the magnetic attraction force is, so that the elastic pressing plate can arch downwards, and the aim of avoiding overlarge contact area when pressing down upper cloth is achieved.
Furthermore, the pressing plate is made of hard magnetic materials, so that cloth can be pressed downwards under the action of magnetic attraction of the cloth feeding teeth, and the lower surface of the pressing plate is subjected to smooth treatment, so that the resistance of upper cloth is reduced to the greatest extent, and synchronous movement of the upper cloth and the lower cloth is effectively guaranteed.
Further, the elastic connecting layer is of a hollowed-out net structure, the elasticity of the elastic connecting layer is smaller than that of the elastic pressing plate, and the elastic force of the elastic connecting layer enables the pressing plate and the feeding teeth to move synchronously.
Further, the application method of the feeding mechanism of the magnetic-induction synchronous sewing machine comprises the following application steps:
s1, firstly raising a presser foot body, then placing a plurality of layers of cloth to be sewn on a cloth feeding tooth, flattening the cloth by hand to eliminate wrinkles, and finally putting down the presser foot body to press the cloth;
s2, starting the sewing machine to start working, and enabling the feed dog to reciprocate back and forth and up and down under the drive of the sewing machine transmission mechanism, wherein when the presser foot body presses cloth onto the feed dog, the feed dog attracts down a pressing plate below the presser foot body due to the shortening of the distance, so that the pressing plate and the feed dog clamp the cloth;
s3, when the feed dog moves forward, the feed dog drives the material pressing plate to move forward in a following way through magnetic force, so that cloth clamped between the feed dog and the material pressing plate moves synchronously, and meanwhile, when the feed dog moves forward, a roller on the material pressing plate rolls in the forward direction through magnetic force, so that the cloth on the upper layer and the cloth on the lower layer are helped to move synchronously.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) According to the scheme, the elastic connection's pressure plate is arranged below the existing pressure foot body, the pressure plate below the pressure foot body is attracted out by the magnetic feed dog to press cloth, when the feed dog moves forwards, the pressure plate is enabled to push the cloth forwards synchronously by utilizing the action of magnetic attraction, the situation that the upper layer and the lower layer of smooth cloth are misplaced is effectively reduced, meanwhile, the contact area between the cloth and the pressure plate is reduced by the roller feed cylinder on the pressure plate, the point pressure is changed from the surface dog, the friction resistance of the upper layer of cloth is reduced, and when the feed dog feeds forwards, the roller feed cylinder is driven to roll on the upper layer of cloth to play the role of pushing the cloth forwards, so that the synchronous feeding effect is effectively improved, in addition, the elastic pressing plate is enabled to further press the cloth downwards by the action of magnetic attraction, the defect of insufficient pressing force is compensated, and the elastic connecting rod can limit the excessive pressing of the elastic pressing plate, so that the pressing force is prevented from being excessively large.
(2) The feed dog comprises a plurality of no magnets and permanent magnets, the plurality of no magnets and the permanent magnets are alternately arranged, the widths of each no magnet and each permanent magnet are equal, and in order to enable the feed dog to drive the roller feed cylinder to roll on cloth when the feed dog moves forwards, the magnetism of the feed dog needs to be intermittent, and otherwise, the continuous magnetic attraction enables the roller feed cylinder to keep motionless.
(3) Two-fifths of the roller feeding cylinder is exposed out of the lower surface of the pressing plate, so that the contact area between cloth and the pressing plate is reduced, the blocking resistance of upper cloth is reduced to keep synchronous movement with the lower layer, and the side wall of the roller feeding cylinder is fixedly connected with a plurality of roller feeding convex points which are arranged at equal intervals so as to increase convex point contact, so that the effect of pushing the cloth is improved.
(4) The roller send the bump to keep away from the roller send one end of section of thick bamboo to inlay and have magnetism protruding, and magnetism protruding magnetism is opposite with the magnetism of permanent magnet, utilizes the effect of opposite polarity magnet interattraction, and downward attraction magnetism protruding when the permanent magnet moves forward to effectively improve roll extrusion pay-off effect.
(5) The open cavities are formed in the side wall of the lower end of the pressing plate at intervals with the roller feeding cylinders, the inner wall of each open cavity is fixedly connected with an elastic pressing plate flush with the lower surface of the pressing plate, the elastic pressing plate arches downwards under the magnetic attraction effect of the feeding teeth to further lower the upper cloth, and therefore the pressing force can be compensated under the condition of insufficient pressing force, and the condition that the cloth is moved back and forth is effectively reduced.
(6) A plurality of elastic connecting rods are fixedly connected between the upper end side wall of the open cavity and the upper end side wall of the elastic pressing plate, the elasticity of the elastic connecting rods is larger than that of the elastic pressing plate, and the elastic connecting rods can limit excessive deformation of the elastic pressing plate, so that the condition of overlarge cloth pressing force is effectively reduced.
(7) The inner wall of the elastic pressing plate is inlaid with a plurality of magnetic balls, the diameters of the magnetic balls are sequentially reduced from the middle part to the two sides, the larger the diameters of the magnetic balls are, the larger the magnetic attraction force is, so that the elastic pressing plate can downwards arch, and the aim of avoiding overlarge contact area when pressing down upper cloth is fulfilled.
(8) The pressing plate is made of hard magnetic materials, so that cloth can be pressed downwards under the action of magnetic attraction of the cloth feeding teeth, and the lower surface of the pressing plate is subjected to smooth treatment, so that the resistance of upper cloth is reduced to the greatest extent, and synchronous movement of the upper cloth and the lower cloth is effectively ensured.
(9) The elastic connecting layer is of a hollowed-out net-shaped structure, the elasticity of the elastic connecting layer is smaller than that of the elastic pressing plate, and the elastic force of the elastic connecting layer enables the pressing plate and the feeding teeth to move synchronously.
Drawings
FIG. 1 is a schematic perspective view of a presser foot according to the present invention;
FIG. 2 is a schematic diagram of a front view structure of the present invention;
FIG. 3 is a schematic diagram of the present invention in a pre-operation state;
FIG. 4 is a schematic view of the starting operation state of the present invention;
FIG. 5 is a schematic diagram of the present invention in operation;
FIG. 6 is a schematic view showing a structure of an elastic pressing plate before deformation;
FIG. 7 is a schematic view showing a deformed state of the elastic pressing plate according to the present invention;
FIG. 8 is a schematic view of the front view of the roll feeder of the present invention;
fig. 9 is a schematic diagram showing a front view of a feed dog according to the present invention.
The reference numerals in the drawings illustrate:
1 presser foot body, 2 feed dog, 201 no magnet, 202 permanent magnet, 3 pressure flitch, 301 open cavity, 302 elastic pressing plate, 303 elastic connecting rod, 304 magnetic ball, 4 elastic connecting layer, 5 roller feed cylinder, 501 roller feed salient point, 502 magnetic protrusion.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments of the present invention are included in the protection scope of the present invention.
In the description of the present invention, it should be noted that the positional or positional relationship indicated by the terms such as "upper", "lower", "inner", "outer", "top/bottom", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "configured to," "engaged with," "connected to," and the like are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Examples:
referring to fig. 1-9, a feeding mechanism of a magnetic-induction synchronous sewing machine, referring to fig. 1-2, comprises a presser foot body 1 and a feeding tooth 2 which are matched, wherein the feeding tooth 2 is provided with magnetism, referring to fig. 9, the feeding tooth 2 is composed of a plurality of non-magnets 201 and permanent magnets 202, the plurality of non-magnets 201 and the permanent magnets 202 are alternately arranged, the widths of each non-magnet 201 and the permanent magnets 202 are equal, and in order to enable the feeding tooth 2 to drive a roller 5 to roll on cloth when moving forwards, the magnetism of the feeding tooth 2 needs to be intermittent, otherwise, the continuous magnetic attraction keeps the roller 5 motionless;
referring to fig. 3, an installation groove is formed in the side wall of the lower end of the presser foot body 1, a pressing plate 3 matched with the feed dog 2 is arranged in the installation groove, the pressing plate 3 is made of hard magnetic materials, so that cloth can be pressed downwards under the action of magnetic attraction of the feed dog 2, the lower surface of the pressing plate 3 is subjected to smooth treatment, so that the resistance of upper cloth is reduced to the greatest extent, synchronous movement of the upper cloth and the lower cloth is effectively ensured, and the thickness of the pressing plate 3 is smaller than the depth of the installation groove;
referring to fig. 6-7, a plurality of open cavities 301 spaced from the roller feeding cylinder 5 are formed on the side wall of the lower end of the pressing plate 3, an elastic pressing plate 302 flush with the lower surface of the pressing plate 3 is fixedly connected to the inner wall of each open cavity 301, the elastic pressing plate 302 arches downwards under the magnetic attraction of the feeding teeth 2 to further press the upper cloth, so that the pressing force can be compensated under the condition of insufficient pressing force, the condition that the cloth walks back and forth is effectively reduced, a plurality of elastic connecting rods 303 are fixedly connected between the side wall of the upper end of the open cavity 301 and the side wall of the upper end of the elastic pressing plate 302, the elasticity of the elastic connecting rods 303 is greater than that of the elastic pressing plate 302, excessive deformation of the elastic pressing plate 302 can be limited, the condition that the pressing force to the cloth is overlarge is effectively reduced, a plurality of magnetic balls 304 are inlaid on the inner wall of the elastic pressing plate 302, the diameters of the magnetic balls 304 are sequentially reduced from the middle to the two sides, the larger the magnetic attraction force is larger, the elastic pressing plate 302 can arch downwards, and the aim of preventing the large contact area of the upper cloth from being pressed downwards is achieved;
referring to fig. 3, an elastic connection layer 4 is fixedly connected between the pressing plate 3 and the groove wall of the installation groove, the elastic connection layer 4 is in a hollow net structure, the elasticity of the elastic connection layer 4 is smaller than that of the elastic pressing plate 302, the elastic force of the elastic connection layer 4 keeps the pressing plate 3 and the feeding teeth 2 to move synchronously, and the lower surface of the elastic connection layer 4 is level with the lower surface of the pressing plate 3;
referring to fig. 6-8, a plurality of roller feeding cylinders 5 are inlaid on the side wall of the lower end of the pressing plate 3, the roller feeding cylinders 5 are rotatably connected with the inner wall of the inlaid groove through a rotating shaft, two fifths of the roller feeding cylinders 5 are exposed out of the lower surface of the pressing plate 3, so that in order to reduce the contact area between cloth and the pressing plate 3, the blocking resistance of upper cloth is reduced to keep synchronous movement with the lower layer, a plurality of roller feeding convex points 501 which are arranged at equal intervals are fixedly connected with the side wall of the roller feeding cylinders 5, the convex point contact is increased, the effect of pushing cloth is improved, the magnetic protrusions 502 are inlaid on one ends of the roller feeding convex points 501 far away from the roller feeding cylinders 5, the magnetism of the magnetic protrusions 502 is opposite to that of the permanent magnets 202, and the magnetic protrusions 502 are attracted downwards when the permanent magnets 202 move forwards due to the attraction effect of opposite magnets, so that the rolling feeding effect is effectively improved.
Referring to fig. 3-5, the method of using the device includes the following steps:
s1, firstly raising a presser foot body 1, then placing a plurality of layers of cloth to be sewn on a cloth feeding tooth 2, flattening the cloth by hand to eliminate wrinkles, and finally putting down the presser foot body 1 to press the cloth;
s2, starting the sewing machine to start working, and enabling the feed dog 2 to reciprocate back and forth and up and down under the drive of a sewing machine transmission mechanism, wherein when the presser foot body 1 presses cloth onto the feed dog 2, the feed dog 2 attracts down the pressure plate 3 below the presser foot body 1 due to the shortening of the distance, so that the pressure plate 3 and the feed dog 2 clamp the cloth;
s3, when the feed dog 2 walks forward, the feed dog 2 drives the material pressing plate 3 to move forward in a following way through magnetic force, so that cloth clamped between the feed dog 2 and the material pressing plate synchronously moves, and simultaneously, when the feed dog 2 moves forward, the roller feed cylinder 5 on the material pressing plate 3 is rolled in the forward direction through magnetic force, so that the cloth on the upper layer and the cloth on the lower layer are helped to move synchronously.
The working principle of the device is as follows: when the presser foot body 1 presses cloth down onto the feed dog 2, the feed dog 2 attracts down the presser plate 3 below the presser foot body 1 due to the shortening of the distance, so that the presser plate 3 and the feed dog 2 clamp the cloth, after the sewing work is started, the feed dog 2 drives the presser plate 3 to move forward through magnetic force when moving forward, so that the clamped cloth between the presser plate 3 moves synchronously, when the feed dog 2 moves downwards, the presser plate 3 restores to the original state under the elasticity of the elastic connecting layer 4 due to the increasing of the distance, and thus, when the feed dog 2 moves forward from back again next time, the presser plate 3 repeats the previous movement, so that the synchronous movement of upper and lower layers of cloth is realized, the roller feed cylinder 5 rolls under the driving of the cloth while the feed dog 2 moves forward, the contact area of the cloth and the presser plate 3 is reduced, so that the blocking resistance of the upper layer cloth is reduced, the synchronous movement with the lower layer is kept, and the synchronous feeding effect is effectively increased.
According to the novel pressing foot, the pressing plate 3 which is elastically connected is arranged below the existing pressing foot body 1, the pressing plate 3 below the pressing foot body 1 is attracted out by the magnetic cloth feeding teeth 2 to press cloth, when the cloth feeding teeth 2 move forwards, the pressing plate 3 is enabled to push the cloth forwards synchronously by utilizing the magnetic attraction effect, the phenomenon that the upper layer and the lower layer of smooth cloth are misplaced is effectively reduced, meanwhile, the contact area between the cloth and the pressing plate 3 is reduced by the roller feeding cylinder 5 on the pressing plate 3, the surface teeth become spot-pressing, friction resistance of the upper layer of cloth is reduced, and when the cloth feeding teeth 2 feed forwards, the roller feeding cylinder 5 is driven to roll on the upper layer of cloth to play a role of pushing the cloth forwards, so that the synchronous feeding effect is effectively improved, in addition, the elastic pressing plate 302 further presses the cloth downwards by utilizing the magnetic attraction effect, the defect of insufficient pressing force is overcome, and the elastic connecting rod 303 can limit excessive pressing of the elastic pressing plate 302, so that the pressing force is prevented from being excessively large.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical solution and the modified concept thereof, within the scope of the present invention.
Claims (7)
1. The utility model provides a synchronous formula sewing machine feeding mechanism is led to magnetism, includes assorted presser foot body (1) and feed dog (2), its characterized in that: feed dog (2) have magnetism, feed dog (2) are constituteed by a plurality of no magnet (201) and permanent magnet (202), and a plurality of no magnet (201) and permanent magnet (202) set up in turn, and the width of every no magnet (201) and permanent magnet (202) all equals, the mounting groove has been seted up to the lower extreme lateral wall of presser foot body (1), be provided with in the mounting groove with feed dog (2) matched pressure plate (3), and the thickness of pressure plate (3) is less than the degree of depth of mounting groove, fixedly connected with elastic connection layer (4) between the cell wall of pressure plate (3) and mounting groove, and the lower surface parallel and level of elastic connection layer (4) and pressure plate (3), the lower extreme lateral wall of pressure plate (3) is inlayed and is had a plurality of roller feed cylinders (5), and roller feed cylinders (5) are rotated through the inner wall of pivot and inlay the groove and are connected, two fifthly parts of roller feed cylinders (5) are provided with pressure plate (3) under pressure plate (502), and the protruding magnetic force of (502) are kept away from to the protruding one end of magnetic force of roller (502) of the protruding (501) of the same.
2. The feeding mechanism of a magnetic induction synchronous sewing machine of claim 1, wherein: a plurality of open cavities (301) which are arranged at intervals with the roller feeding cylinders (5) are formed in the side wall of the lower end of the material pressing plate (3), and the inner wall of each open cavity (301) is fixedly connected with an elastic pressing plate (302) which is flush with the lower surface of the material pressing plate (3).
3. The feeding mechanism of a magnetic induction synchronous sewing machine of claim 2, wherein: a plurality of elastic connecting rods (303) are fixedly connected between the upper end side wall of the opening cavity (301) and the upper end side wall of the elastic pressing plate (302), and the elasticity of the elastic connecting rods (303) is larger than that of the elastic pressing plate (302).
4. The feeding mechanism of a magnetic induction synchronous sewing machine of claim 2, wherein: the inner wall of the elastic pressing plate (302) is inlaid with a plurality of magnetic balls (304), and the diameters of the magnetic balls (304) are sequentially reduced from the middle part to the two sides.
5. The feeding mechanism of a magnetic induction synchronous sewing machine of claim 1, wherein: the material pressing plate (3) is made of hard magnetic materials, and the lower surface of the material pressing plate (3) is subjected to smooth treatment.
6. The feeding mechanism of a magnetic induction synchronous sewing machine of claim 2, wherein: the elastic connecting layer (4) is of a hollowed-out net structure, and the elasticity of the elastic connecting layer (4) is smaller than that of the elastic pressing plate (302).
7. The method for using the feeding mechanism of the magnetic induction synchronous sewing machine according to any one of claims 1 to 6, wherein the method comprises the following steps: the method comprises the following using steps:
s1, firstly lifting a presser foot body (1), then placing a plurality of layers of cloth to be sewn on a cloth feeding tooth (2), flattening the cloth by hand to eliminate wrinkles, and finally putting down the presser foot body (1) to press the cloth;
s2, starting the sewing machine to start working, and enabling the feed dog (2) to reciprocate back and forth and up and down under the drive of a sewing machine transmission mechanism, wherein when the presser foot body (1) presses cloth onto the feed dog (2), the feed dog (2) attracts down a pressing plate (3) below the presser foot body (1) due to the shortening of the distance, so that the pressing plate (3) and the feed dog (2) clamp the cloth;
s3, when the feed dog (2) moves forwards, the feed dog (2) drives the material pressing plate (3) to move forwards in a following way through magnetic force, so that cloth clamped between the feed dog and the material pressing plate synchronously moves, and meanwhile, when the feed dog (2) moves forwards, a roller feed cylinder (5) on the material pressing plate (3) rolls forwards through magnetic force, so that the cloth on the upper layer and the cloth on the lower layer are helped to move synchronously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110602833.5A CN113529289B (en) | 2021-05-31 | 2021-05-31 | Magnetic-induction synchronous type sewing machine feeding mechanism and using method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110602833.5A CN113529289B (en) | 2021-05-31 | 2021-05-31 | Magnetic-induction synchronous type sewing machine feeding mechanism and using method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN113529289A CN113529289A (en) | 2021-10-22 |
| CN113529289B true CN113529289B (en) | 2024-01-23 |
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| CN202110602833.5A Active CN113529289B (en) | 2021-05-31 | 2021-05-31 | Magnetic-induction synchronous type sewing machine feeding mechanism and using method thereof |
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| CN (1) | CN113529289B (en) |
Citations (15)
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| CN113529289A (en) | 2021-10-22 |
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