CN107761258B - Cloth feeding adjusting mechanism of sewing machine - Google Patents
Cloth feeding adjusting mechanism of sewing machine Download PDFInfo
- Publication number
- CN107761258B CN107761258B CN201711270019.8A CN201711270019A CN107761258B CN 107761258 B CN107761258 B CN 107761258B CN 201711270019 A CN201711270019 A CN 201711270019A CN 107761258 B CN107761258 B CN 107761258B
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- 238000009958 sewing Methods 0.000 title claims abstract description 45
- 239000004744 fabric Substances 0.000 title claims abstract description 36
- 230000005540 biological transmission Effects 0.000 claims abstract description 59
- 230000001105 regulatory effect Effects 0.000 claims abstract description 14
- 230000000149 penetrating effect Effects 0.000 claims description 19
- 230000033001 locomotion Effects 0.000 description 16
- 238000000034 method Methods 0.000 description 7
- 239000002131 composite material Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 241000276425 Xiphophorus maculatus Species 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B27/00—Work-feeding means
- D05B27/02—Work-feeding means with feed dogs having horizontal and vertical movements
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B27/00—Work-feeding means
- D05B27/02—Work-feeding means with feed dogs having horizontal and vertical movements
- D05B27/08—Work-feeding means with feed dogs having horizontal and vertical movements with differential feed motions
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B69/00—Driving-gear; Control devices
- D05B69/02—Mechanical drives
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The invention provides a cloth feeding adjusting mechanism of a sewing machine, and belongs to the technical field of sewing machines. It has solved current work feed adjustment mechanism and has adjusted inconvenient scheduling problem of equipment. This sewing machine's work feed adjustment mechanism, sewing machine includes the casing and all wears to establish main shaft and the transmission shaft on the casing, work feed adjustment mechanism includes regulating spindle and adjusting link, the regulating spindle wears to establish on the casing, fixedly connected with transmission crank on the transmission shaft, transmission crank is articulated with the adjusting link, be provided with the cam on the main shaft, the cover is equipped with the cam connecting rod on the cam, the cam connecting rod is articulated with the adjusting link, the one end of adjusting link is the slip end, it has the slider to articulate on the slip end, the sliding tray has been seted up along the direction of perpendicular regulating spindle on the lateral surface of regulating spindle, the slider is embedded into the sliding tray and can slide along the direction that the sliding tray was seted up. The cloth feeding adjusting mechanism has the advantages of convenience in assembly and adjustment and the like.
Description
Technical Field
The invention belongs to the technical field of sewing machines, and relates to a cloth feeding adjusting mechanism of a sewing machine.
Background
The sewing machine is a machine for sewing materials through a suture and comprises a needle bar mechanism, a thread picking mechanism, a feeding mechanism, a thread hooking mechanism, a pressing mechanism, a thread clamping device, a lubricating device and the like. The feeding mechanism is a mechanism for conveying the stitching materials and comprises a lower feeding mechanism, an upper feeding mechanism, a needle feeding mechanism, an upper and lower composite feeding mechanism, an upper needle and lower composite feeding mechanism and the like, wherein the upper needle and lower composite feeding mechanism is a feeding mechanism with a feeding presser foot and a stitching needle penetrating the stitching materials and moving together with a lower feeding tooth.
The Chinese patent literature data discloses a cloth feeding mechanism of a sewing machine [ application number: 201310754333.9; bulletin number: 103668797B ] comprises a main shaft, a needle bar, a pressing bar connecting bar and a feeding tooth driving shaft for driving the feeding tooth to move, wherein the lower end of the pressing bar is fixedly connected with an outer pressing bar, the lower end of the pressing bar connecting bar is fixedly connected with an inner pressing bar, a front-back swinging mechanism is arranged between the pressing bar connecting bar and the main shaft, and an up-down movement mechanism is also arranged between the pressing bar connecting bar and the main shaft. The up-down motion mechanism comprises a transmission shaft, and a transmission assembly II is arranged between the transmission shaft and the main shaft. The second transmission component comprises a transmission shaft crank, a bent arm connecting rod, a cloth feeding eccentric wheel, a swinging seat, an up-and-down motion adjusting shaft, an adjusting shaft crank and a cloth feeding connecting rod, wherein the swinging seat is U-shaped, the up-and-down motion adjusting shaft is rotationally arranged on a shell, the adjusting shaft crank is fixedly connected with one end of the up-and-down motion adjusting shaft, a pin shaft hole I is formed in the adjusting shaft crank in parallel with the up-and-down motion adjusting shaft, a pin shaft hole II is formed in the middle of the swinging seat, the pin shaft hole I and the pin shaft hole II are coaxial, a pin shaft is inserted in the pin shaft hole I and the pin shaft hole II, the cloth feeding eccentric wheel is sleeved on a main shaft of the sewing machine, one end of the cloth feeding connecting rod is sleeved on the cloth feeding eccentric wheel, the transmission shaft crank is fixedly connected with the end of the transmission shaft, one end of the bent arm connecting rod is hinged to the transmission shaft crank, and the other end of the bent arm connecting rod, the other end of the cloth feeding connecting rod and two end parts of the swinging seat are hinged together.
The cloth feeding mechanism of the sewing machine further comprises an adjusting dial and an adjusting screw, wherein the adjusting screw is fixed on the up-and-down motion adjusting shaft, an adjusting rod is rotationally arranged on the machine shell, one end of the adjusting rod extends out of the machine shell to be fixedly connected with the adjusting dial, the other end of the adjusting rod is positioned in the machine shell and is provided with a platy cam part, and the adjusting screw abuts against the upper edge of the cam part and can be lifted to drive the up-and-down motion adjusting shaft to rotate when the adjusting dial rotates anticlockwise. The up-down movement adjusting shaft is also fixedly provided with a locking screw, the casing is rotationally provided with a locking rod, one end of the locking rod extends out of the casing and is connected with a locking dial, and the other end of the locking rod is positioned in the casing and is provided with a platy locking part.
The transmission assembly II is used for connecting the bent arm connecting rod and the parts of the up-and-down motion adjusting shaft, the adjusting crank is fixedly connected to the up-and-down motion adjusting shaft, the adjusting screw and the locking screw are further fixed on the up-and-down motion adjusting shaft, when the sewing machine is assembled and debugged, the position relation between the adjusting crank and the adjusting screw and the locking screw is required to be adjusted, and the installation error between the adjusting crank and the up-and-down motion adjusting shaft can cause the inaccuracy of the alternate quantity adjustment of the presser foot. Because the adjusting crank is sleeved on the up-and-down motion adjusting shaft and fixed through the clamp structure, the position of the adjusting crank is accurately determined, and the assembly and the debugging are very inconvenient. Meanwhile, the cloth feeding connecting rod, the bent arm connecting rod and the adjusting disc are hinged at the same position through a pin shaft, so that the assembly is inconvenient. In the using process, the adjustment dial plate and the locking dial plate are manually rotated to adjust the alternating quantity of the presser foot, the adjustment process is inconvenient, and the adjustment accuracy is low.
Disclosure of Invention
The invention aims at solving the problems existing in the prior art, and provides a cloth feeding adjusting mechanism of a sewing machine, which solves the technical problems of convenient assembly and debugging of the adjusting mechanism.
The aim of the invention can be achieved by the following technical scheme:
the utility model provides a sewing machine's work feed adjustment mechanism, sewing machine includes the casing and all wears to establish main shaft and transmission shaft on the casing, work feed adjustment mechanism includes regulating spindle and adjusting link, the regulating spindle wears to establish on the casing, fixedly connected with transmission crank on the transmission shaft, transmission crank is articulated with the adjusting link, be provided with the cam on the main shaft, the cover is equipped with the cam connecting rod on the cam, the cam connecting rod is articulated with the adjusting link, its characterized in that, the one end of adjusting link is the slip end, it has the slider to articulate on the slip end, the sliding tray has been seted up along the direction of perpendicular regulating spindle on the lateral surface of regulating spindle, the slider is embedded into the sliding tray and can be along the direction slip that the sliding tray was seted up.
The alternating amount of the inner presser foot and the outer presser foot is adjusted by rotating the adjusting shaft. The sliding groove is perpendicular to the axis of the adjusting shaft, the sliding block slides along the direction of the sliding groove, the adjusting shaft is rotated, the inclination angle of the sliding groove is changed, the sliding block in the sliding groove slides and drives the adjusting connecting rod to move, and therefore the rotation phase of the transmission shaft is changed, and the alternating amount of the inner presser foot and the outer presser foot is adjusted. When the debugging and adjusting mechanism is assembled, the sliding block is hinged to the sliding end of the connecting rod, and then the sliding block slides into the sliding groove, so that the sliding end of the connecting rod is connected with the adjusting shaft. The sliding block can be connected with the transmission crank and the cam connecting rod after sliding into the sliding groove. The position of the sliding groove on the adjusting shaft is determined through machining, so that the sliding block is only required to be embedded into the sliding groove during assembly, and the position is not required to be adjusted, so that the assembly and the debugging are convenient.
The main shaft, the transmission shaft and the adjusting shaft are connected through the adjusting connecting rod, compared with the prior art, the space occupied by the adjusting disc and the adjusting crank in the shell is reduced, and the adjusting mechanism is compact in structure. Meanwhile, the sliding block used for connecting the adjusting connecting rod and the adjusting shaft is embedded into the sliding groove of the adjusting shaft, so that the space occupied by the sliding block is reduced, and the structure of the adjusting mechanism is more compact.
In the cloth feeding adjusting mechanism of the sewing machine, the bottom of the sliding groove penetrates through the adjusting shaft, a rod penetrating groove connected with the sliding groove is further formed in the outer side face of the adjusting shaft, and the sliding end penetrates through the rod penetrating groove.
The bottom of the sliding groove penetrates through the adjusting shaft and the through rod groove, so that interference of the adjusting connecting rod to sliding of the sliding block in the installation and use process can be prevented, on one hand, the assembly and adjustment are convenient, and on the other hand, the mechanism is stable in operation.
In the cloth feeding adjusting mechanism of the sewing machine, the width of the rod penetrating groove in the axial direction of the adjusting shaft is larger than that of the sliding groove in the axial direction of the adjusting shaft, the bottom surface of the rod penetrating groove is connected with the baffle through the screw, and the side surface of the sliding block is abutted to the baffle.
The position of the baffle is adjusted by screwing the screw, so that the side face of the sliding block is attached to the baffle, the situation that the sliding block cannot be embedded into the sliding groove due to oversized sliding block can be reduced, and the assembly process of the sliding block and the adjusting shaft is convenient. The side surface of the sliding block is abutted against the baffle plate, so that the shaking of the sliding block in the sliding process can be reduced, and the mechanism is stable in operation.
In the cloth feeding adjusting mechanism of the sewing machine, the other end of the adjusting connecting rod is a connecting end, the connecting end is hinged with the transmission crank, the middle part of the adjusting connecting rod is provided with a hinged section, and the hinged section is hinged with the cam connecting rod.
During the equipment, the connecting rod both ends are articulated with transmission crank and slider respectively, and the middle part of pull rod is articulated with the cam connecting rod, compares in prior art with cloth feed connecting rod, bent arm connecting rod and regulating disk hinge together through a round pin axle, and this cloth feed adjustment mechanism can reduce the equipment degree of difficulty, makes the equipment more convenient.
In the cloth feeding adjusting mechanism of the sewing machine, the side wall of the sliding groove is provided with a strip-shaped groove at the intersection of the two side wall surfaces. The sliding block is prevented from being blocked and dead at the intersection of two side wall surfaces of the sliding groove, so that the mechanism is stable in operation.
In the cloth feeding adjusting mechanism of the sewing machine, the side wall of the sliding groove is provided with a concave yielding groove, the sliding end is inserted into the yielding groove, and a gap is reserved between the end face of the sliding end and the bottom face of the yielding groove.
The sliding end is inserted into the abdication groove, so that shaking occurring in the movement process of the adjusting connecting rod can be reduced, the adjusting mechanism is stable to operate, the gap is arranged to prevent the adjusting connecting rod from being blocked in the movement process, and the adjusting mechanism is stable and smooth to operate.
In the cloth feeding adjusting mechanism of the sewing machine, the sliding end is provided with the pin shaft hole III, the pin shaft hole III is internally provided with the pin shaft III, and two ends of the pin shaft III extend out of the pin shaft hole III and are respectively sleeved with a sliding block.
The sliding blocks are arranged on two sides of the sliding end, so that the sliding end can be uniformly stressed, and the regulating mechanism is stable in operation.
In the cloth feeding adjusting mechanism of the sewing machine, the motor is fixed on the shell and is electrically connected with the controller of the sewing machine, the controller of the sewing machine controls the rotation angle of the motor, one end of the adjusting shaft is a fixed end, a fixing hole is formed in the end face of the fixed end, and the rotating shaft of the motor is inserted into the fixing hole and fixed.
The controller controls the rotation angle of the motor and the rotation direction of the motor by controlling the energizing time and the current direction of the motor. The pivot of motor is connected with the stiff end of transmission shaft, realizes adjusting the alternating quantity of interior presser foot and outer presser foot through motor and controller, can improve the accuracy of adjusting, can realize not shutting down simultaneously and adjust, makes regulation convenient and fast.
In the cloth feeding adjusting mechanism of the sewing machine, the other end of the adjusting shaft is a positioning end, and a positioning groove is formed in the end face of the positioning end. The positioning groove is convenient for positioning and mounting the adjusting shaft, so that the adjusting mechanism is convenient to assemble.
Compared with the prior art, the invention has the following advantages:
the adjusting connecting rod is connected with the transmission shaft and the main shaft through the transmission crank and the cam connecting rod, and is connected with the adjusting shaft through the hinged sliding block, the adjusting shaft is provided with a sliding groove perpendicular to the adjusting shaft, and the sliding block is embedded into the sliding groove and can slide in the sliding groove, so that the adjusting mechanism is convenient to assemble and adjust, and meanwhile, the adjusting mechanism is compact in structure. The adjusting shaft is provided with the rod penetrating groove, so that interference during assembly is reduced, and the assembly is convenient. The connecting end of the connecting rod is hinged with the transmission crank, the hinged section in the middle of the connecting rod is hinged with the cam connecting rod, the sliding end of the connecting rod is hinged with the sliding block, and each hinge point is provided with only two parts, so that the mechanism is convenient to assemble. The baffle is connected through the screw, and the side face of the sliding block is attached to the baffle, so that the occurrence of the condition that the sliding block cannot be embedded into the sliding groove is reduced, and the assembly is convenient. The side wall of the sliding groove is provided with a yielding groove and a strip-shaped groove, and two sliding blocks are arranged, so that the mechanism is stable in operation. The motor and the controller control the rotation of the adjusting shaft, so that the adjusting mechanism is convenient to adjust and the adjusting accuracy is improved.
Drawings
FIG. 1 is a perspective view of the present feed adjustment mechanism mounted to a housing;
FIG. 2 is a perspective view of the present feed adjustment mechanism;
FIG. 3 is an exploded view of the present feed adjustment mechanism;
FIG. 4 is a perspective view of the adjustment shaft of the present feed adjustment mechanism;
FIG. 5 is a top view of the adjustment shaft of the present feed adjustment mechanism;
fig. 6 is a perspective view of the feed adjusting mechanism when the adjusting link is connected to the adjusting shaft.
In the figure, 1, a shell; 2. a main shaft; 3. a transmission shaft; 4. an adjusting shaft; 4a, a sliding groove; 4b, a rod penetrating groove; 4c, a strip-shaped groove; 4d, a yielding groove; 4e, fixing end; 4e1, fixing holes; 4f, positioning ends; 4f1, a positioning groove; 5. adjusting the connecting rod; 5a, a connecting end; 5b, a hinge section; 5c, a sliding end; 5c1, a pin shaft hole III; 5c2, pin three; 6. a drive crank; 7. a cam; 8. a cam link; 9. a slide block; 10. a baffle; 11. a motor; 12. a shaft sleeve.
Detailed Description
The following are specific embodiments of the present invention and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.
Example 1
As shown in fig. 1-6, the sewing machine comprises a machine shell 1 and a bedplate, a needle bar vertically penetrates through the left end of the machine shell 1, and the lower end of the needle bar is fixedly connected with an organic needle; the machine shell 1 is horizontally penetrated with a main shaft 2 along the left-right direction, the right end of the main shaft 2 is connected with a motor, the left end of the main shaft 2 is connected with a needle bar transmission mechanism, the needle bar is connected with the needle bar transmission mechanism, and the main shaft 2 drives the needle bar to move up and down in the machine shell 1 through the needle bar transmission mechanism. The left end of the shell 1 is further provided with a pressing rod in a penetrating mode along the up-down direction, the lower end of the pressing rod is fixedly provided with an inner pressing foot, the left side of the pressing rod is provided with a pressing foot rod, the lower end of the pressing foot rod is fixedly provided with an outer pressing foot, and the inner pressing foot is located in a gap in the middle of the outer pressing foot.
An up-down transmission mechanism is arranged between the outer presser foot and the main shaft 2, the up-down transmission mechanism comprises a differential component, the differential component is connected with a pressing rod, when the main shaft 2 rotates, the main shaft 2 drives the presser foot rod and the pressing rod to move up and down through the up-down transmission mechanism, and differential is formed between the inner presser foot and the outer presser foot through the differential component, and the differential quantity between the inner presser foot and the outer presser foot is also called as alternating quantity. A back-and-forth swing transmission mechanism is further arranged between the outer presser foot and the main shaft 2, and the main shaft 2 drives the outer presser foot to swing back and forth through the back-and-forth swing transmission mechanism. A feeding tooth is arranged below the needle on the platen, a feeding tooth transmission mechanism is arranged between the feeding tooth and the main shaft 2, and the main shaft 2 drives the feeding tooth to move through the feeding tooth transmission mechanism. When the sewing machine works, the main shaft 2 rotates and simultaneously carries the sewing machine needle, the feeding teeth, the outer presser foot and the inner presser foot to synchronously move for feeding cloth. The needle bar transmission mechanism, the feeding tooth transmission mechanism, the up-down transmission mechanism and the back-and-forth swing transmission mechanism are all in the prior art, and see patent document with the publication number of 103668797B.
The upper and lower transmission mechanism comprises a transmission shaft 3 penetrating through the shell 1, the transmission shaft 3 is arranged in parallel with the main shaft 2, the left end of the transmission shaft 3 is connected with the differential assembly, and the right end of the transmission shaft 3 is fixed with a transmission crank 6. One end of the transmission crank 6 is provided with a clamp structure which is fixedly connected to the transmission shaft 3, and the other end of the transmission crank 6 is provided with a first pin hole. The main shaft 2 is provided with a cam 7, the cam 7 is sleeved with a cam connecting rod 8, one end of the cam connecting rod 8 is sleeved on the cam 7, the other end of the cam connecting rod 8 is provided with two lugs, a pit is arranged between the two lugs, and the two lugs are provided with coaxial pin holes II.
A cloth feeding adjusting mechanism of the sewing machine is arranged between the transmission shaft 3 and the main shaft 2 and is used for adjusting the alternating quantity between the inner presser foot and the outer presser foot. The cloth feeding adjusting mechanism comprises an adjusting shaft 4 and an adjusting connecting rod 5. The adjusting shaft 4 is arranged on the shell 1 in a penetrating way, and the adjusting shaft 4 is parallel to the main shaft 2. The right-hand member of regulating spindle 4 is stiff end 4e, and the left end of connecting spindle is locating end 4f, is provided with fixed orifices 4e1 on stiff end 4 e's the terminal surface, is provided with on locating end 4 f's the terminal surface and is banding constant head tank 4f1. The casing 1 is provided with a left supporting part and a right supporting part, the left supporting part is provided with a left supporting hole, the right supporting part is provided with a right supporting hole, and the positioning end 4f is inserted in the left supporting hole. The fixed end 4e is sleeved with a shaft sleeve 12, the shaft sleeve 12 is fixed in the right supporting hole, the outer side face of the fixed end 4e is provided with a stop shoulder, the left end face of the shaft sleeve 12 is attached to the stop shoulder, the outer side face of the left end of the shaft sleeve 12 is provided with a convex ring, and the convex ring is positioned on the left side of the right supporting part and is abutted to the right supporting part. The arrangement of the retaining shoulder and the convex ring facilitates the positioning and the installation of the adjusting shaft 4, and the mechanism is convenient to assemble. The right support part is also fixed with a motor 11, the motor 11 is positioned on the right side of the right support part, and the rotating shaft of the motor 11 is inserted into and fixed in the fixing hole 4e1 of the adjusting shaft 4. A motor 11 seat is fixed on the shell of the motor 11, and the motor 11 seat is fixed with the upper surface of the right supporting part.
One end of the adjusting connecting rod 5 is a connecting end 5a, the other end of the adjusting connecting rod 5 is a sliding end 5c, and the middle part of the adjusting connection is provided with a hinging section 5b. The connecting end 5a is provided with a pin shaft hole I, a pin shaft I is inserted in the pin shaft hole I, the left end of the pin shaft I extends out of the connecting end 5a and is inserted into a pin hole I of the transmission crank 6, and the adjusting connecting rod 5 is hinged with the transmission crank 6 through the pin shaft I. The hinge section 5b is provided with a pin shaft hole II, a pin shaft II is inserted in the pin shaft hole II, the hinge section 5b is inserted into a pit between two lugs of the cam connecting rod 8, two ends of the pin shaft II extend out of the hinge section 5b and are respectively inserted into pin holes II of the two lugs, and the adjusting connecting rod 5 is hinged with the cam connecting rod 8 through the pin shaft II. The sliding end 5c is hinged with a sliding block 9, the sliding end 5c is provided with a pin shaft hole III 5c1, a pin shaft III 5c2 is inserted in the pin shaft hole III 5c1, and two ends of the pin shaft III 5c2 extend out of the pin shaft hole III 5c1 and are respectively sleeved with the sliding block 9.
The outer side surface of the adjusting shaft 4 is provided with a sliding groove 4a along the direction perpendicular to the adjusting shaft 4, the bottom of the sliding groove 4a penetrates through the adjusting shaft 4, and two sliding blocks 9 are embedded into the sliding groove 4a and can slide in the sliding groove 4a along the opening direction of the sliding groove 4 a. The outer side surface of the adjusting shaft 4 is also provided with a rod penetrating groove 4b connected with the sliding groove 4a, and the sliding end 5c penetrates through the rod penetrating groove 4b. The side wall of the sliding groove 4a is provided with a concave yielding groove 4d, the yielding groove 4d is opposite to the penetrating rod groove 4b, the sliding end 5c is inserted into the yielding groove 4d, and a gap is reserved between the end face of the sliding end 5c and the bottom face of the yielding groove 4 d. The width of the rod penetrating groove 4b in the axial direction of the adjusting shaft 4 is larger than that of the sliding groove 4a in the axial direction of the adjusting shaft 4, a baffle plate 10 is connected to the bottom surface of the rod penetrating groove 4b through a screw, and the side surface of the sliding block 9 is abutted to the baffle plate 10. The baffle 10 has two blocks, is located the left and right sides of sliding end 5c respectively, has the breach that supplies sliding end 5c to pass through between two blocks. The side wall of the slide groove 4a is provided with a bar-shaped groove 4c at the intersection of the two side wall surfaces.
The adjusting shaft 4 is rotated, the inclination angle of the sliding groove 4a is changed, and the sliding block 9 in the sliding groove 4a slides and drives the adjusting connecting rod 5 to move, so that the rotation phase of the transmission shaft 3 is changed, and the alternating amount of the inner presser foot and the outer presser foot is adjusted. The motor 11 is electrically connected with a controller of the sewing machine, the controller of the sewing machine controls the rotation angle of the motor 11, and the controller controls the rotation angle of the motor 11 and the rotation direction of the motor 11 by controlling the energizing time and the current direction of the motor 11. The pivot of motor 11 is connected with the stiff end 4e of transmission shaft 3, realizes adjusting the alternating volume of interior presser foot and outer presser foot through motor 11 and controller, can improve the accuracy of regulation, can realize not shutting down simultaneously and adjust, makes regulation convenient and fast.
When the debugging adjusting mechanism is assembled, the sliding block 9 is hinged on the sliding end 5c, and then the sliding block 9 is slid into the sliding groove 4a, so that the sliding end 5c is connected with the adjusting shaft 4. The slide 9 can be slid into the slide groove 4a to connect the adjusting lever 5 with the drive crank 6 and the cam lever 8. Since the position of the sliding groove 4a on the adjusting shaft 4 is determined by machining, the sliding block 9 is only needed to be embedded into the sliding groove 4a during assembly, and the position of the sliding groove 4a is not needed to be adjusted, so that the assembly and the debugging are convenient. The main shaft 2, the transmission shaft 3 and the adjusting shaft 4 are connected by adopting the adjusting connecting rod 5, so that the arrangement of parts is reduced; meanwhile, the sliding block 9 on the adjusting connecting rod 5 is embedded into the sliding groove 4a of the adjusting shaft 4, so that the space occupied by the sliding block 9 is reduced, and the adjusting mechanism is compact in structure.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (9)
1. The utility model provides a sewing machine's work feed adjustment mechanism, sewing machine includes casing (1) and all wears to establish main shaft (2) and transmission shaft (3) on casing (1), work feed adjustment mechanism includes regulating spindle (4) and adjusting link (5), regulating spindle (4) wear to establish on casing (1), fixedly connected with drive crank (6) on transmission shaft (3), drive crank (6) are articulated with adjusting link (5), be provided with cam (7) on main shaft (2), the cover is equipped with cam link (8) on cam (7), cam link (8) are articulated with adjusting link (5), a serial communication port, the one end of adjusting link (5) is sliding end (5 c), articulated on sliding end (5 c) have slider (9), along the direction of perpendicular regulating spindle (4) on the lateral surface set up sliding tray (4 a), slider (9) are embedded into sliding tray (4 a) and can be along the direction of seting up sliding tray (4 a).
2. The cloth feeding adjusting mechanism of the sewing machine according to claim 1, wherein the bottom of the sliding groove (4 a) penetrates through the adjusting shaft (4), a rod penetrating groove (4 b) connected with the sliding groove (4 a) is further formed in the outer side face of the adjusting shaft (4), and the sliding end (5 c) penetrates through the rod penetrating groove (4 b).
3. The cloth feed adjusting mechanism of a sewing machine according to claim 2, wherein the width of the rod penetrating groove (4 b) in the axial direction of the adjusting shaft (4) is larger than the width of the sliding groove (4 a) in the axial direction of the adjusting shaft (4), a baffle plate (10) is connected to the bottom surface of the rod penetrating groove (4 b) through a screw, and the side surface of the sliding block (9) is abutted against the baffle plate (10).
4. A cloth feeding adjusting mechanism of a sewing machine according to any one of claims 1-3, wherein the other end of the adjusting connecting rod (5) is a connecting end (5 a), the connecting end (5 a) is hinged with the transmission crank (6), the middle part of the adjusting connecting rod (5) is provided with a hinged section (5 b), and the hinged section (5 b) is hinged with the cam connecting rod (8).
5. A cloth feeding adjusting mechanism of a sewing machine according to any one of claims 1 to 3, wherein a strip-shaped groove (4 c) is provided on a side wall of the sliding groove (4 a) at an intersection of both side wall surfaces.
6. A cloth feeding adjusting mechanism of a sewing machine according to claim 2 or 3, wherein the side wall of the sliding groove (4 a) is provided with a concave yielding groove (4 d), the sliding end (5 c) is inserted into the yielding groove (4 d), and a gap is arranged between the end face of the sliding end (5 c) and the bottom face of the yielding groove (4 d).
7. A cloth feeding adjusting mechanism of a sewing machine according to any one of claims 1-3, wherein a pin shaft hole three (5 c 1) is arranged on the sliding end (5 c), a pin shaft three (5 c 2) is inserted in the pin shaft hole three (5 c 1), and two ends of the pin shaft three (5 c 2) extend out of the pin shaft hole three (5 c 1) and are respectively sleeved with a sliding block (9).
8. A cloth feeding adjusting mechanism of a sewing machine according to any one of claims 1-3, wherein a motor (11) is fixed on the casing (1), the motor (11) is electrically connected with a controller of the sewing machine, the controller of the sewing machine controls a rotation angle of the motor (11), one end of the adjusting shaft (4) is a fixed end (4 e), a fixing hole (4 e 1) is arranged on an end face of the fixed end (4 e), and a rotating shaft of the motor (11) is inserted into the fixing hole (4 e 1) and fixed.
9. The cloth feeding adjusting mechanism of the sewing machine according to claim 8, wherein the other end of the adjusting shaft (4) is a positioning end (4 f), and a positioning groove (4 f 1) is provided on an end surface of the positioning end (4 f).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711270019.8A CN107761258B (en) | 2017-12-05 | 2017-12-05 | Cloth feeding adjusting mechanism of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711270019.8A CN107761258B (en) | 2017-12-05 | 2017-12-05 | Cloth feeding adjusting mechanism of sewing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107761258A CN107761258A (en) | 2018-03-06 |
| CN107761258B true CN107761258B (en) | 2024-02-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711270019.8A Active CN107761258B (en) | 2017-12-05 | 2017-12-05 | Cloth feeding adjusting mechanism of sewing machine |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017216725A1 (en) * | 2017-09-21 | 2019-03-21 | Dürkopp Adler AG | Method for operating a sewing machine and sewing machine for carrying out the method |
| CN109706627B (en) * | 2019-01-14 | 2021-02-02 | 杰克缝纫机股份有限公司 | Sewing machine and feeding mechanism thereof |
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