CN114000266B - Adjusting structure in cloth feeding mechanism of sewing machine - Google Patents
Adjusting structure in cloth feeding mechanism of sewing machine Download PDFInfo
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- CN114000266B CN114000266B CN202010736754.9A CN202010736754A CN114000266B CN 114000266 B CN114000266 B CN 114000266B CN 202010736754 A CN202010736754 A CN 202010736754A CN 114000266 B CN114000266 B CN 114000266B
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- sleeve
- pawl
- adjusting sleeve
- feeding mechanism
- cloth feeding
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B27/00—Work-feeding means
Abstract
The invention provides an adjusting structure in a cloth feeding mechanism of a sewing machine, and belongs to the technical field of sewing machines. The adjusting structure solves the technical problem that the angle and the front-back amplitude of the motion track of the cloth feeding mechanism cannot be adjusted by the adjusting structure of the cloth feeding mechanism of the existing sewing machine. The cloth feeding mechanism of the sewing machine comprises a main shaft and an output connecting rod, wherein the main shaft is provided with an eccentric section and a thin shaft section, the adjusting structure comprises an output sleeve and an angle adjusting sleeve, one end of the output connecting rod is sleeved on the output sleeve through a bearing, and the angle adjusting sleeve is sleeved on the thin shaft section and is connected with the thin shaft section through a first clutch component; one end of the angle adjusting sleeve is inserted in the waist-shaped hole and can slide relative to the output sleeve along the length direction of the waist-shaped hole of the output sleeve, one side of the output sleeve is provided with a front adjusting sleeve and a rear adjusting sleeve, and the front adjusting sleeve and the rear adjusting sleeve are sleeved at one end of the angle adjusting sleeve and are connected through a clutch assembly. The invention can realize the adjustment of the angle or the front-back amplitude of the motion track of the cloth feeding mechanism of the sewing machine.
Description
Technical Field
The invention belongs to the technical field of sewing machines, and relates to a cloth feeding mechanism of a sewing machine, in particular to an adjusting structure in the cloth feeding mechanism of the sewing machine.
Background
The working principle of the existing sewing machine is that a needle bar drives a lead wire to pass through a curved needle which is arranged at the bottom of a textile and is penetrated with a winding wire under the drive of a driving device so as to interweave the lead wire and the winding wire together to realize sewing. In view of the special working principle of the existing sewing machine, the sewing machine has the advantages of high sewing speed, good sewing quality, convenient operation and the like, is popular with people, and is widely applied to the fields of clothing, home furnishings and the like. The existing sewing machine generally comprises a needle bar needling material mechanism, a jumper wire mechanism, a differential adjusting structure, a cloth feeding mechanism, a looper thread hooking mechanism and the like. Wherein, the feed dog in the feed mechanism is through elevating movement cooperation differential adjustment structure jointly with the cloth to the required position.
Chinese patent (bulletin number: CN106637707B; bulletin day: 2019-11-12) discloses a cloth feeding mechanism of a sewing machine, which comprises a main shaft, wherein a needle pitch eccentric wheel is sleeved on the main shaft, an eccentric wheel first is arranged outside the needle pitch eccentric wheel, a chute first is arranged in the eccentric wheel first, the needle pitch eccentric wheel can slide in the chute first, the sliding direction of the needle pitch eccentric wheel in the chute first is eccentrically arranged relative to the eccentric wheel first, and a cloth feeding connecting rod is sleeved outside the eccentric wheel; the main shaft is sleeved with a base, and the first eccentric wheel is arranged on the base in a sliding way along the radial direction of the main shaft; a clutch mechanism is arranged between the base and the main shaft.
The cloth feeding mechanism of the sewing machine in the patent document can only adjust the inclination angle of the elliptical motion track of the cloth feeding teeth, can not adjust the front and rear amplitude of the motion track of the cloth feeding teeth, and has smaller use scene.
Disclosure of Invention
According to the problems existing in the prior art, the invention provides an adjusting structure in a cloth feeding mechanism of a sewing machine, and the technical problems to be solved by the invention are as follows: how to enable the adjusting structure of the cloth feeding mechanism to realize that the angle and the front-back amplitude of the motion trail of the cloth feeding mechanism can be adjusted.
The aim of the invention can be achieved by the following technical scheme:
the adjusting structure is characterized by comprising an output sleeve and an angle adjusting sleeve, wherein one end of the output connecting rod is sleeved on the output sleeve, and the angle adjusting sleeve is sleeved on the thin shaft section and is connected with the thin shaft section through a first clutch component; the output sleeve is provided with a waist-shaped hole, one end of the angle adjusting sleeve is inserted into the waist-shaped hole, the angle adjusting sleeve and the output sleeve can slide relatively along the length direction of the waist-shaped hole, one side of the output sleeve is provided with a front adjusting sleeve and a rear adjusting sleeve which can drive the output sleeve to move along the length direction of the waist-shaped hole of the output sleeve, and the front adjusting sleeve and the rear adjusting sleeve are sleeved at one end of the angle adjusting sleeve and are connected through a clutch assembly.
The working principle is as follows: when the sewing machine is used, a power supply is connected, the main shaft rotates and drives the angle adjusting sleeve, the output sleeve and the front-back adjusting sleeve to rotate. When the sewing machine needs to be regulated, the sewing machine stops working, an operator can stop rotating the angle regulating sleeve once applying external force to the clutch component, and can manually rotate the main shaft, so that the relative phase of the angle regulating sleeve and the main shaft is changed, after the external force is removed, the angle regulating sleeve is rotated again, the phase relation between the angle regulating sleeve and the main shaft after the external force is removed can be maintained, and further, the phase relation between the whole cloth feeding mechanism of the sewing machine and the main shaft is changed, namely, the angle of the whole movement track is changed. The operator applies external force to the clutch component II, the front and rear adjusting sleeves stop rotating, and the angle adjusting sleeves still rotate under the action of the main shaft, so that the phase relation between the front and rear adjusting sleeves and the angle adjusting sleeves is changed, the front and rear adjusting sleeves stop rotating and then drive the output sleeves to move along the main shaft, the adjusting sleeves are connected with the output connecting rod, the swing amplitude of the output connecting rod is changed, and the front and rear amplitude of the whole motion track of the cloth feeding mechanism of the sewing machine is changed. The adjusting structure of the cloth feeding mechanism of the sewing machine is simple in composition and convenient to assemble and maintain; the operation steps of the adjusting structure are simple, so that the adjusting structure is convenient for a user to start, and is time-saving and labor-saving; the adjusting structure can respectively change the front and back amplitude or angle of the whole motion track of the cloth feeding mechanism of the sewing machine, improves the working efficiency and expands the use scene of the sewing machine.
In the adjusting structure in the cloth feeding mechanism of the sewing machine, one end of the angle adjusting sleeve is provided with a large shaft section, the other end of the angle adjusting sleeve is provided with a thin shaft shoulder section, one end face of the large shaft section is provided with a first sliding chute along the radial direction of the large shaft section, the first clutch assembly comprises a first ratchet wheel fixedly arranged on the thin shaft section and a first pawl arranged in the first sliding chute in a sliding manner, the first pawl can be clamped with the first ratchet wheel and form circumferential limit, and the end face of the large shaft section is also provided with a first reset elastic piece capable of resetting the first pawl; the output sleeve and the front-rear adjusting sleeve are sleeved on the thin shaft shoulder section. The first ratchet wheel and the first pawl are clamped, so that the first ratchet wheel and the first pawl can rotate under the action of the main shaft at the same time, and the first ratchet wheel and the first pawl can be automatically recombined after being separated by arranging the first reset elastic piece.
Alternatively, the clutch assembly may be a chuck, a caliper, or a hoop.
In the adjusting structure in the cloth feeding mechanism of the sewing machine, the thin shaft section is provided with an abutting plane, the first ratchet wheel is sleeved on the abutting plane of the thin shaft section, the outer peripheral surface of the first ratchet wheel is in threaded connection with the first fixing screw, and the inner end of the first fixing screw can abut on the abutting plane; the two ends of the first sliding groove penetrate through the outer peripheral surface of the large shaft section, the first pawl is in a strip plate shape and is slidably embedded in the first sliding groove, and one end of the first pawl and the outer peripheral surface of the first ratchet wheel are provided with teeth first matched with each other; the outer peripheral surface of the large shaft section is also provided with a clamping groove I. The first pawl is in a strip-shaped plate shape and is stably matched with the first chute on the large shaft section, so that the angle adjusting sleeve can be driven to rotate; the first ratchet wheel is matched with the first pawl through the first tooth, so that stable connection of the first ratchet wheel and the first pawl is ensured; the clamping groove I outside the large shaft section can be used for clamping the tool, so that the pawl I cannot be reset under the action of the reset elastic piece I.
In the adjusting structure in the cloth feeding mechanism of the sewing machine, the first reset elastic piece is a reset torsion spring, and the middle part of the reset torsion spring is connected to the end surface of the large shaft section through a first shaft position screw; the end face of the large shaft section is further provided with a first limiting pin, one end of the reset torsion spring is connected to the first limiting pin, and the other end of the reset torsion spring abuts against the groove of one end face of the pawl. The reset torsion spring is arranged, so that the first pawl can be reset by utilizing the elasticity of the first pawl after the external force on the first pawl is removed and the tool on the first clamping groove is removed.
Alternatively, the reset torsion spring can also be a coil spring or other elastic pieces with reset memory function, etc.; the ends of the coil spring may abut against the end of the pawl one and the end of the large shaft section, respectively.
In the adjusting structure in the cloth feeding mechanism of the sewing machine, the thin shaft shoulder section is provided with a first parallel plane, the wall of the lateral part of the waist-shaped hole of the output sleeve is provided with a second parallel plane, and the first parallel plane corresponds to the second parallel plane and is in sliding contact with the second parallel plane. The first parallel plane and the second parallel plane are matched, so that the output sleeve can stably move along the thin shaft shoulder section of the angle adjusting sleeve.
In the adjusting structure in the cloth feeding mechanism of the sewing machine, a second sliding groove along the radial direction of the second sliding groove is formed in one end of the output sleeve, a sliding block is arranged in the second sliding groove in a sliding mode, an eccentric shaft shoulder section is arranged at one end of the front-back adjusting sleeve, the sliding block is sleeved on the eccentric shaft shoulder section, a small cylinder is arranged at the other end of the output sleeve, one end of the output connecting rod is sleeved on the output sleeve through a bearing, and an inner ring of the bearing is sleeved on the small cylinder. The sliding block moves along the second sliding groove, and simultaneously drives the adjusting sleeve to move, and the adjusting sleeve drives the output connecting rod to move through the small cylinder, so that the swing amplitude of the output connecting rod is changed.
In the adjusting structure in the cloth feeding mechanism of the sewing machine, a third radial chute is formed in the end face of the other end of the front adjusting sleeve and the end face of the other end of the rear adjusting sleeve, the second clutch assembly comprises a second ratchet wheel fixedly arranged on the thin shaft shoulder section and a second pawl arranged in the third chute in a sliding mode, the second pawl can be clamped with the second ratchet wheel to form circumferential limit, and a second reset elastic piece capable of enabling the second pawl to reset is further arranged on the end face of the front adjusting sleeve and the end face of the rear adjusting sleeve. The ratchet wheel II and the pawl II are clamped, so that the ratchet wheel II and the pawl II can rotate under the action of the main shaft, and the ratchet wheel II and the pawl II can be automatically combined after being separated through the arrangement of the reset elastic piece II.
In the adjusting structure in the cloth feeding mechanism of the sewing machine, the second ratchet wheel is sleeved at a position of the thin shaft shoulder section, which is close to the end part, a second fixing screw is screwed on the outer peripheral surface of the second ratchet wheel, and the inner end of the second fixing screw can be abutted against the outer peripheral surface of the thin shaft shoulder section; the two ends of the third chute penetrate through the outer peripheral surface of the front-rear adjusting sleeve, the second pawl is in a strip plate shape and is slidably embedded in the third chute, and one end of the second pawl and the outer peripheral surface of the second ratchet wheel are provided with second teeth which are matched with each other; the outer peripheral surface of the front and rear adjusting sleeve is also provided with a clamping groove II. The second pawl is in a strip-shaped plate shape and is stably matched with a sliding groove III on the front and rear adjusting sleeve, so that the front and rear adjusting sleeve can be driven to rotate; the second ratchet wheel is matched with the second pawl through the second tooth, so that the connection stability of the second ratchet wheel and the second pawl is ensured; the clamping groove II arranged on the front and rear adjusting sleeve can be used for clamping the tool, so that the pawl II is ensured not to reset due to the action of the reset elastic piece II.
In the adjusting structure in the cloth feeding mechanism of the sewing machine, the second reset elastic piece is also a reset torsion spring, and the middle part of the reset torsion spring is connected with the end surfaces of the front adjusting sleeve and the rear adjusting sleeve through a second axial screw; the end face of the front-rear adjusting sleeve is fixedly provided with a limiting pin II, one end of the reset torsion spring is connected to the limiting pin II, and the other end of the reset torsion spring abuts against the groove of the two end faces of the pawl. The reset torsion spring is arranged, so that the first pawl can be reset by utilizing the elasticity of the first pawl after the external force on the first pawl is removed and the tool on the first clamping groove is removed.
In the above adjusting structure in the cloth feeding mechanism of the sewing machine, as another scheme, the end face of the large shaft section facing the thin shaft shoulder section is provided with a strip-shaped boss; a second chute along the radial direction of the output sleeve is formed on the end surface of one end of the output sleeve, and the strip-shaped boss is embedded in the second chute in a sliding manner; one end of the front-rear adjusting sleeve is provided with an eccentric shaft shoulder section, the eccentric shaft shoulder section is inserted into the waist-shaped hole, a sliding block is sleeved on the eccentric shaft shoulder section, the wall of the side part of the waist-shaped hole of the output sleeve is provided with a parallel plane II, and the peripheral surface of the sliding block is provided with a parallel plane III; the second parallel plane corresponds to the second parallel plane in a three-phase manner and the second parallel plane are in sliding contact.
In the adjusting structure in the cloth feeding mechanism of the sewing machine, the other end of the output sleeve is provided with a small cylinder, the waist-shaped hole penetrates through the two ends of the whole output sleeve, one end of the output connecting rod is sleeved on the output sleeve through a bearing, and the inner ring of the bearing is sleeved on the small cylinder; the end face of the other end of the front-back adjusting sleeve is provided with a third sliding groove along the radial direction of the front-back adjusting sleeve, the second clutch assembly comprises a second ratchet wheel fixedly arranged on the thin shaft shoulder section and a second pawl arranged in the third sliding groove in a sliding manner, the second pawl can be clamped with the second ratchet wheel to form circumferential limit, and the end face of the front-back adjusting sleeve is further provided with a second reset elastic piece capable of resetting the second pawl.
Compared with the prior art, the novel use has the following advantages:
1. the adjusting structure in the cloth feeding mechanism of the sewing machine can respectively and independently adjust the angle and the front and back amplitude of the whole movement track of the cloth feeding mechanism, the mutual influence is avoided, the type of the output movement track is greatly increased, and therefore the use scene of the sewing machine is enlarged.
2. The adjusting structure in the cloth feeding mechanism of the sewing machine adopts the ratchet wheel and the pawl to be matched and locked or uses external force to unlock the ratchet wheel and the pawl to adjust the angle and the front-back amplitude of the whole movement track of the cloth feeding mechanism, thereby being stable and reliable and convenient to operate.
Drawings
Fig. 1 is a schematic perspective view of an adjusting structure according to a first embodiment.
Fig. 2 is an exploded view of the present adjusting structure in the first embodiment.
Fig. 3 is a schematic perspective view of an angle adjusting sleeve in the adjusting structure according to the first embodiment.
Fig. 4 is a schematic perspective view of an output sleeve in the present adjusting structure in the first embodiment.
Fig. 5 is a schematic perspective view of a front-rear adjusting sleeve in the adjusting structure according to the first embodiment.
Fig. 6 is an exploded view of the present adjusting structure in the second embodiment.
Fig. 7 is an exploded view of the present adjusting structure in the second embodiment.
In the figure, 1, a main shaft; 1a, an eccentric section; 1a1, a thin shaft section; 1a11, an abutment plane; 2. an output link; 3. an output sleeve; 3a, waist-shaped holes; 3a1, parallel planes II; 3b, a second chute; 3c, small cylinders; 4. an angle adjusting sleeve; 4a, a large shaft section; 4a1, a first chute; 4a2, a clamping groove I; 4a3, a strip-shaped boss; 4b, a thin shaft shoulder section; 4b1, parallel planes one; 5. a bearing; 6. a clutch assembly I; 6a, ratchet wheel I; 6b, pawl one; 7. a front-rear adjusting sleeve; 7a, eccentric shaft shoulder sections; 7b, a chute III; 7c, clamping groove II; 8. a clutch assembly II; 8a, a ratchet wheel II; 8b, a pawl II; 9. resetting the first elastic piece; 10. a first fixing screw; 11. tooth one; 12. an axial screw I; 13. a first limiting pin; 14. a slide block; 14a, parallel planes three; 15. resetting the elastic piece II; 16. a second fixing screw; 17. teeth II; 18. an axial screw II; 19. and a limiting pin II.
Detailed Description
The following is a specific embodiment of the present invention and further describes the technical scheme of the present invention with reference to the accompanying drawings. The invention is not limited to these examples.
Example 1
As shown in fig. 1, 2 and 4, the cloth feeding mechanism of the sewing machine comprises a main shaft 1 and an output connecting rod 2, wherein the main shaft 1 is provided with an eccentric section 1a, one end of the eccentric section 1a is provided with a thin shaft section 1a1, the adjusting structure comprises an output sleeve 3 and an angle adjusting sleeve 4, one end of the output connecting rod 2 is sleeved on the output sleeve 3 through a bearing 5, the angle adjusting sleeve 4 is sleeved on the thin shaft section 1a1, and the two are connected through a clutch assembly I6; the output sleeve 3 is provided with a waist-shaped hole 3a, one end of the angle adjusting sleeve 4 is inserted into the waist-shaped hole 3a, the angle adjusting sleeve 4 and the output sleeve 3 can slide relatively along the length direction of the waist-shaped hole 3a, one side of the output sleeve 3 is provided with a front adjusting sleeve 7 and a rear adjusting sleeve 7 which can drive the output sleeve 3 to move along the length direction of the waist-shaped hole 3a, and the front adjusting sleeve 7 and the rear adjusting sleeve 7 are sleeved at one end of the angle adjusting sleeve 4 and are connected through a clutch assembly II 8.
When the angle adjusting sleeve is used, the power supply of the sewing machine is turned on, the main shaft 1 starts to rotate, and simultaneously the output sleeve 3, the angle adjusting sleeve 4 and the front-rear adjusting sleeve 7 are driven to rotate; when the angle of the motion track of the whole cloth feeding mechanism of the sewing machine needs to be adjusted, an operator applies external force to the clutch assembly I6, the angle adjusting sleeve 4 stops rotating, so that the relative phase of the angle adjusting sleeve 4 and the main shaft 1 is changed, the external force is removed after adjustment, the adjusted phase relation is maintained, namely, the phase of the whole cloth feeding mechanism relative to the main shaft 1 is changed, and the change of the angle of the whole motion track is realized due to the change of the phase relation of front-back motion and up-down motion; when the front and back amplitude of the whole motion of the cloth feeding mechanism of the sewing machine is required to be adjusted, an operator applies external force to the clutch component II, the front and back adjusting sleeve 7 stops rotating, so that the relative phase of the angle adjusting sleeve 4 and the front and back adjusting sleeve 7 is changed, and at the moment, the output sleeve 3 also moves along the main shaft 1 under the influence of the front and back adjusting sleeve 7, so that the swing amplitude of the output connecting rod 2 is changed, and the front and back amplitude of the whole motion track is changed. The adjusting structure can respectively change the front and back amplitude or angle of the motion trail of the cloth feeding mechanism of the sewing machine, greatly facilitates the user, improves the working efficiency and expands the use scene of the sewing machine.
Further, as shown in fig. 2 and 3, one end of the angle adjusting sleeve 4 is provided with a large shaft section 4a, the other end is provided with a thin shaft shoulder section 4b, one end face of the large shaft section 4a is provided with a first chute 4a1 along the radial direction of the large shaft section, the first clutch component 6 comprises a first ratchet wheel 6a fixedly arranged on the thin shaft section 1a1 and a first pawl 6b slidably arranged in the first chute 4a1, the first pawl 6b can be clamped with the first ratchet wheel 6a and form circumferential limit, and the end face of the large shaft section 4a is also provided with a first reset elastic piece 9 capable of resetting the first pawl 6 b; the output sleeve 3 and the front-rear adjusting sleeve 7 are sleeved on the thin shaft shoulder section 4 b. The thin shaft section 1a1 is provided with an abutting plane 1a11, the ratchet wheel 1a is sleeved at the abutting plane 1a11 of the thin shaft section 1a1, the outer peripheral surface of the ratchet wheel 6a is in threaded connection with the fixing screw 10, and the inner end of the fixing screw 10 can abut against the abutting plane 1a 11; the two ends of the first sliding chute 4a1 penetrate through the outer peripheral surface of the large shaft section 4a, the first pawl 6b is in a strip plate shape and is embedded in the first sliding chute 4a1 in a sliding manner, and the teeth 11 which are matched with each other are arranged on one end of the first pawl 6b and the outer peripheral surface of the first ratchet 6 a; the outer peripheral surface of the large shaft section 4a is also provided with a clamping groove 4a2. The first reset elastic piece 9 is a reset torsion spring, and the middle part of the reset torsion spring is connected with the end face of the large shaft section 4a through a first shaft position screw 12; the end face of the large shaft section 4a is also provided with a first limiting pin 13, one end of the reset torsion spring is connected to the first limiting pin 13, and the other end of the reset torsion spring is abutted against the groove on the end face of the first pawl 6 b.
Specifically, the operator applies force to the pawl one 6b while using the tool to lock the catching groove one 4a2 on the angle adjuster 4, the pawl one 6b is separated from the teeth one 9 engaged with each other on the ratchet one 6a, the pawl one 6b stops rotating, the angle adjuster 4 stops rotating because the pawl one 6b is connected to the angle adjuster 4 through the return elastic member one 9, and the pawl one 6b does not reengage the ratchet one 6a due to the elastic action of the return elastic member one 9 because the catching groove one 4a2 on the angle adjuster 4 is caught, so that the angle adjuster 4 does not re-rotate, and the phase relationship between the angle adjuster 4 and the spindle 1 is changed; the external force is removed, the tool clamped on the clamping groove I4 a2 is loosened, the ratchet wheel I6 a and the pawl I6 b are meshed again, the angle adjuster 4 rotates again, and the phase relation with the main shaft 1 is maintained, so that the change of the angle of the integral movement track is realized. The adjusting structure can conveniently change the angle of the whole motion trail of the cloth feeding mechanism of the sewing machine.
As shown in fig. 2, 4 and 5, the thin shoulder section 4b is provided with a parallel plane one 4b1, the side hole wall of the waist-shaped hole 3a of the output sleeve 3 is provided with a parallel plane two 3a1, and the parallel plane one 4b1 corresponds to the parallel plane two 3a1 and the two slide and lean against each other. One end of the output sleeve 3 is provided with a second sliding groove 3b along the radial direction of the output sleeve, a sliding block 14 is arranged in the second sliding groove 3b in a sliding manner, one end of the front-back adjusting sleeve 7 is provided with an eccentric shaft shoulder section 7a, the sliding block 14 is sleeved on the eccentric shaft shoulder section 7a, the other end of the output sleeve 3 is provided with a small cylinder 3c, and an inner ring of the bearing 5 is sleeved on the small cylinder 3 c. The end face of the other end of the front-back adjusting sleeve 7 is provided with a third chute 7b along the radial direction, the second clutch component 8 comprises a second ratchet wheel 8a fixedly arranged on the thin shaft shoulder section 4b and a second pawl 8b arranged in the third chute 7b in a sliding manner, the second pawl 8b can be clamped with the second ratchet wheel 8a to form circumferential limit, and the end face of the front-back adjusting sleeve 7 is also provided with a second reset elastic piece 15 capable of resetting the second pawl 8 b. The second ratchet wheel 8a is sleeved at the position of the thin shaft shoulder section 4b, which is close to the end part, a second fixing screw 16 is screwed on the outer peripheral surface of the second ratchet wheel 8a, and the inner end of the second fixing screw 16 can be abutted against the outer peripheral surface of the thin shaft shoulder section 4 b; the two ends of the sliding groove III 7b penetrate through the outer peripheral surface of the front-rear adjusting sleeve 7, the pawl II 8b is in a strip plate shape and is embedded in the sliding groove III 7b in a sliding manner, and teeth II 17 matched with each other are arranged on one end of the pawl II 8b and the outer peripheral surface of the ratchet wheel II 8 a; the outer peripheral surface of the front and rear adjusting sleeve 7 is also provided with a clamping groove II 7c. The second reset elastic piece 15 is also a reset torsion spring, and the middle part of the reset torsion spring is connected with the end face of the front and rear adjusting sleeve 7 through a second axial screw 18; the end face of the front and rear adjusting sleeve 7 is fixedly provided with a second limiting pin 19, one end of the reset torsion spring is connected to the second limiting pin 20, and the other end of the reset torsion spring abuts against the groove in the end face of the second pawl 8 b.
Specifically, the operator applies external force to the pawl two 8b, the clamping groove two 7c on the front and rear adjusting sleeve 7 is clamped by the tool, the pawl two 8b and the tooth two 17 meshed with each other on the ratchet two 8a are separated, the pawl two 8b stops rotating, the pawl two 8b is connected with the front and rear adjusting sleeve 7 through the reset elastic piece two 15, so that the front and rear adjusting sleeve 7 also stops rotating, and the pawl two 8b cannot be meshed with the ratchet two 8a again due to the clamping groove two 7c on the front and rear adjusting sleeve 7, so that the front and rear adjusting sleeve 7 cannot be rotated again due to the elastic action of the reset elastic piece 15, and simultaneously the angle adjuster 4 starts rotating under the action of the main shaft 1, so that the relative phase of the angle adjusting sleeve 4 and the front and rear adjusting sleeve 7 is changed, and the sliding sleeve 3 is pushed out of the output sleeve 3 due to the fact that the left eccentric shaft shoulder section 7a and the inner hole of the front and rear end of the front adjusting sleeve 7 are eccentric, the sliding block 14 moves along the parallel fine shaft shoulder section 4b, the waist-shaped hole 3a1 on the output sleeve 3 moves along the parallel flat surface two shoulder 3a1 on the output sleeve 3 and the waist-shaped hole 3a is matched with the sliding sleeve 3b along the length of the first sliding sleeve 4b, so that the amplitude of the sliding sleeve 2 is changed, and the sliding amplitude of the sliding sleeve 3 is changed along the length of the sliding sleeve 3 is also changed, and the sliding sleeve 3 is matched with the length of the sliding sleeve 3 along the length of the sliding sleeve 2. The front-back adjusting sleeve 7 is sleeved on the thin shaft shoulder section 4b of the angle adjusting sleeve 4, and the thin shaft shoulder 4b and the thin shaft section 1a1 of the main shaft 1 are concentrically arranged, so that the eccentric amount of the outer circular surface of the output sleeve 3 relative to the center of the thin shaft section 1a1 of the main shaft 1 is unchanged during angle adjustment, the front-back amplitude is kept basically unchanged, and in addition, a ratchet wheel I6 a for limiting the radial rotation of the angle adjusting sleeve 4 is fixed on the main shaft 1, so that the angle is kept unchanged during the front-back amplitude adjustment. The adjusting structure can conveniently change the front and back amplitude of the motion trail of the cloth feeding mechanism of the sewing machine, and the front and back amplitude and the angle of the motion trail can be respectively adjusted without mutual influence.
Example two
As shown in fig. 6 and 7, the present embodiment is substantially the same as the first embodiment except that the end face of the large shaft section 4a facing the thin shaft shoulder section 4b in the present embodiment has a bar-shaped boss 4a3; a second chute 3b along the radial direction of the output sleeve 3 is arranged on the end surface of one end of the output sleeve 3, and a strip-shaped boss 4a3 is embedded in the second chute 3b in a sliding manner; one end of the front-rear adjusting sleeve 7 is provided with an eccentric shaft shoulder section 7a, the eccentric shaft shoulder section 7a is inserted into the waist-shaped hole 3a, a cylindrical sliding block 14 is sleeved on the eccentric shaft shoulder section 7a, the wall of the side part of the waist-shaped hole 3a of the output sleeve 3 is provided with a parallel plane II 3a1, and the peripheral surface of the sliding block 14 is provided with a parallel plane III 14a; the parallel plane II 3a1 corresponds to the parallel plane III 14a and the parallel plane III are in sliding contact with each other; the length direction of the waist-shaped hole 3a is perpendicular to the length direction of the second chute 3 b. The other end of the output sleeve 3 is provided with a small cylinder 3c, a waist-shaped hole 3a penetrates through the two ends of the whole output sleeve 3, and an inner ring of the bearing 5 is sleeved on the small cylinder 3 c; the end face of the other end of the front-back adjusting sleeve 7 is provided with a third chute 7b along the radial direction, the second clutch component 8 comprises a second ratchet wheel 8a fixedly arranged on the thin shaft shoulder section 4b and a second pawl 8b arranged in the third chute 7b in a sliding manner, the second pawl 8b can be clamped with the second ratchet wheel 8a to form circumferential limit, and the end face of the front-back adjusting sleeve 7 is also provided with a second reset elastic piece 15 capable of resetting the second pawl 8 b. The second ratchet wheel 8a is sleeved at the position of the thin shaft shoulder section 4b, which is close to the end part, a second fixing screw 16 is screwed on the outer peripheral surface of the second ratchet wheel 8a, and the inner end of the second fixing screw 16 can be abutted against the outer peripheral surface of the thin shaft shoulder section 4 b; the two ends of the sliding groove III 7b penetrate through the outer peripheral surface of the front-rear adjusting sleeve, the pawl II 8b is in a strip plate shape and is embedded in the sliding groove III 7b in a sliding manner, and teeth II 17 matched with each other are arranged on one end of the pawl II 8b and the outer peripheral surface of the ratchet II 8 a; the outer peripheral surface of the front and rear adjusting sleeve 7 is also provided with a clamping groove II 7c. In the embodiment, the second reset elastic piece 15 is also a reset torsion spring, and the middle part of the reset torsion spring is connected with the end face of the front and rear adjusting sleeve 7 through a second axial screw 18; the end face of the front and rear adjusting sleeve 7 is fixedly provided with a second limiting pin 19, one end of the reset torsion spring is connected to the second limiting pin 20, and the other end of the reset torsion spring abuts against the groove in the end face of the second pawl 8 b. The principle of the adjusting structure in this embodiment is the same as that in the first embodiment.
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.
Although 1, the spindle is used more herein; 1a, an eccentric section; 1a1, a thin shaft section; 1a11, an abutment plane; 2. an output link; 3. an output sleeve; 3a, waist-shaped holes; 3a1, parallel planes II; 3b, a second chute; 3c, small cylinders; 4. an angle adjusting sleeve; 4a, a large shaft section; 4a1, a first chute; 4a2, a clamping groove I; 4a3, a strip-shaped boss; 4b, a thin shaft shoulder section; 4b1, parallel planes one; 5. a bearing; 6. a clutch assembly I; 6a, ratchet wheel I; 6b, pawl one; 7. a front-rear adjusting sleeve; 7a, eccentric shaft shoulder sections; 7b, a chute III; 7c, clamping groove II; 8. a clutch assembly II; 8a, a ratchet wheel II; 8b, a pawl II; 9. resetting the first elastic piece; 10. a first fixing screw; 11. tooth one; 12. an axial screw I; 13. a first limiting pin; 14. a slide block; 14a, parallel planes three; 15. resetting the elastic piece II; 16. a second fixing screw; 17. teeth II; 18. an axial screw II; 19. stop pins, etc., but do not exclude the possibility of using other terms. These terms are used merely for convenience in describing and explaining the nature of the invention; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present invention.
Claims (10)
1. An adjusting structure in a cloth feeding mechanism of a sewing machine, the cloth feeding mechanism of the sewing machine comprises a main shaft (1) and an output connecting rod (2), one end of the main shaft (1) is provided with a thin shaft section (1 a 1), and the cloth feeding mechanism is characterized by comprising an output sleeve (3) and an angle adjusting sleeve (4), one end of the output connecting rod (2) is sleeved on the output sleeve (3), and the angle adjusting sleeve (4) is sleeved on the thin shaft section (1 a 1) and is connected with the thin shaft section through a clutch assembly I (6); the angle adjusting sleeve is characterized in that a waist-shaped hole (3 a) is formed in the output sleeve (3), one end of the angle adjusting sleeve (4) is inserted into the waist-shaped hole (3 a) and the angle adjusting sleeve (4) can slide relatively to the output sleeve (3) along the length direction of the waist-shaped hole (3 a), one side of the output sleeve (3) is provided with a front adjusting sleeve (7) capable of driving the output sleeve (3) to move along the length direction of the waist-shaped hole (3 a), the front adjusting sleeve (7) and the rear adjusting sleeve (7) are sleeved at one end of the angle adjusting sleeve (4) and are connected through a clutch assembly II (8), one end of the angle adjusting sleeve (4) is provided with a large shaft section (4 a), the other end of the angle adjusting sleeve (4) is provided with a thin shaft shoulder section (4 b), and the output sleeve (3) and the front adjusting sleeve (7) are sleeved on the thin shaft shoulder section (4 b).
2. The adjusting structure in the cloth feeding mechanism of the sewing machine according to claim 1, wherein a first sliding groove (4 a 1) along the radial direction is formed on one end face of the large shaft section (4 a), the first clutch component (6) comprises a first ratchet wheel (6 a) fixedly arranged on the thin shaft section (1 a 1) and a first pawl (6 b) slidingly arranged in the first sliding groove (4 a 1), the first pawl (6 b) can be clamped with the first ratchet wheel (6 a) and form a circumferential limit, and a first reset elastic piece (9) capable of resetting the first pawl (6 b) is further arranged on the end face of the large shaft section (4 a).
3. The adjusting structure in the cloth feeding mechanism of the sewing machine according to claim 2, characterized in that the thin shaft section (1 a 1) is provided with an abutting plane (1 a 11), the ratchet wheel one (6 a) is sleeved at the abutting plane (1 a 11) of the thin shaft section (1 a 1), the outer peripheral surface of the ratchet wheel one (6 a) is in threaded connection with a fixing screw one (10), and the inner end of the fixing screw one (10) can abut against the abutting plane (1 a 11); the two ends of the first sliding groove (4 a 1) penetrate through the outer peripheral surface of the large shaft section (4 a), the first pawl (6 b) is in a strip plate shape and is embedded in the first sliding groove (4 a 1) in a sliding manner, and teeth (11) matched with each other are arranged on one end of the first pawl (6 b) and the outer peripheral surface of the first ratchet (6 a); the outer peripheral surface of the large shaft section (4 a) is also provided with a clamping groove I (4 a 2).
4. The adjusting structure in the cloth feeding mechanism of the sewing machine according to claim 2 or 3, wherein the first reset elastic member (9) is a reset torsion spring, and the middle part of the reset torsion spring is connected with the end surface of the large shaft section (4 a) through a first shaft position screw (12); the end face of the large shaft section (4 a) is further provided with a first limiting pin (13), one end of the reset torsion spring is connected to the first limiting pin (13), and the other end of the reset torsion spring abuts against the groove in the end face of the first pawl (6 b).
5. The adjusting structure in the cloth feeding mechanism of the sewing machine according to claim 2 or 3, wherein the thin shoulder section (4 b) is provided with a parallel plane one (4 b 1), the lateral hole wall of the waist-shaped hole (3 a) of the output sleeve (3) is provided with a parallel plane two (3 a 1), and the parallel plane one (4 b 1) corresponds to the parallel plane two (3 a 1) and is in sliding contact with the parallel plane two (3 a 1).
6. The adjusting structure in the cloth feeding mechanism of the sewing machine according to claim 2 or 3, characterized in that a second sliding groove (3 b) along the radial direction is arranged at one end of the output sleeve (3), a sliding block (14) is arranged in the second sliding groove (3 b) in a sliding manner, an eccentric shaft shoulder section (7 a) is arranged at one end of the front and rear adjusting sleeve (7), the sliding block (14) is sleeved on the eccentric shaft shoulder section (7 a), a small cylinder (3 c) is arranged at the other end of the output sleeve (3), one end of the output connecting rod (2) is sleeved on the output sleeve (3) through a bearing (5), and an inner ring of the bearing (5) is sleeved on the small cylinder (3 c).
7. The adjusting structure in the cloth feeding mechanism of the sewing machine according to claim 6, wherein a third chute (7 b) along the radial direction is formed on the end surface of the other end of the front and rear adjusting sleeve (7), the second clutch assembly (8) comprises a second ratchet wheel (8 a) fixedly arranged on the thin shaft shoulder section (4 b) and a second pawl (8 b) slidably arranged in the third chute (7 b), the second pawl (8 b) can be clamped with the second ratchet wheel (8 a) and form a circumferential limit, and a second reset elastic piece (15) capable of resetting the second pawl (8 b) is further arranged on the end surface of the front and rear adjusting sleeve (7).
8. The adjusting structure in the cloth feeding mechanism of the sewing machine according to claim 7, wherein the ratchet wheel two (8 a) is sleeved at a position of the thin shaft shoulder section (4 b) close to the end part, a fixing screw two (16) is screwed on the outer peripheral surface of the ratchet wheel two (8 a), and the inner end of the fixing screw two (16) can be abutted against the outer peripheral surface of the thin shaft shoulder section (4 b); the two ends of the sliding groove III (7 b) penetrate through the outer peripheral surface of the front-rear adjusting sleeve (7), the pawl II (8 b) is in a strip plate shape and is embedded in the sliding groove III (7 b) in a sliding manner, and teeth II (17) matched with each other are arranged on one end of the pawl II (8 b) and the outer peripheral surface of the ratchet II (8 a); the outer peripheral surface of the front and rear adjusting sleeve (7) is also provided with a clamping groove II (7 c).
9. An adjusting structure in a cloth feeding mechanism of a sewing machine according to claim 2 or 3, wherein one end of the angle adjusting sleeve (4) is provided with a large shaft section (4 a), the other end is provided with a thin shaft shoulder section (4 b), and the end face of the large shaft section (4 a) facing the thin shaft shoulder section (4 b) is provided with a strip-shaped boss (4 a 3); a second chute (3 b) along the radial direction of the output sleeve (3) is formed on the end surface of one end of the output sleeve (3), and the strip-shaped boss (4 a 3) is embedded in the second chute (3 b) in a sliding manner; one end of the front and rear adjusting sleeve (7) is provided with an eccentric shaft shoulder section (7 a), the eccentric shaft shoulder section (7 a) is inserted into the waist-shaped hole (3 a), a sliding block (14) is sleeved on the eccentric shaft shoulder section (7 a), a parallel plane II (3 a 1) is arranged on the wall of the side part hole of the waist-shaped hole (3 a) of the output sleeve (3), and a parallel plane III (14 a) is arranged on the peripheral surface of the sliding block (14); the parallel plane II (3 a 1) corresponds to the parallel plane III (14 a) and the parallel plane II and the parallel plane III are in sliding contact.
10. The adjusting structure in the cloth feeding mechanism of the sewing machine according to claim 9, wherein the other end of the output sleeve (3) is provided with a small cylinder (3 c), the waist-shaped hole (3 a) penetrates through two ends of the whole output sleeve (3), one end of the output connecting rod (2) is sleeved on the output sleeve (3) through a bearing (5), and an inner ring of the bearing (5) is sleeved on the small cylinder (3 c); the clutch assembly is characterized in that a third chute (7 b) along the radial direction of the third chute is formed in the end face of the other end of the front and rear adjusting sleeve (7), the clutch assembly II (8) comprises a second ratchet wheel (8 a) fixedly arranged on the thin shaft shoulder section (4 b) and a second pawl (8 b) slidably arranged in the third chute (7 b), the second pawl (8 b) can be clamped with the second ratchet wheel (8 a) and form circumferential limit, and a second reset elastic piece (15) capable of resetting the second pawl (8 b) is further arranged on the end face of the front and rear adjusting sleeve (7).
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| CN202010736754.9A CN114000266B (en) | 2020-07-28 | 2020-07-28 | Adjusting structure in cloth feeding mechanism of sewing machine |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010246839A (en) * | 2009-04-20 | 2010-11-04 | Juki Corp | Sewing machine |
| CN109338603A (en) * | 2018-10-24 | 2019-02-15 | 杰克缝纫机股份有限公司 | Sewing machine backstitches mechanism and sewing machine |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003038884A (en) * | 2001-08-03 | 2003-02-12 | Juki Corp | Lock stitch sewing machine |
| CN202039191U (en) * | 2010-12-10 | 2011-11-16 | 精机机械厂股份有限公司 | Swinging stroke adjusting device of upper auxiliary cloth feeding claw of sewing machine |
| CN203700722U (en) * | 2014-01-14 | 2014-07-09 | 启翔股份有限公司 | Differential motion feeding device of sewing machine |
| CN106637707B (en) * | 2016-12-19 | 2019-11-12 | 杰克缝纫机股份有限公司 | Work-feeding mean of sewing machine |
| CN106757825B (en) * | 2017-01-19 | 2019-05-31 | 台州市飞龙机械有限公司 | A kind of needle gage adjuster |
| CN107558015B (en) * | 2017-10-23 | 2020-07-07 | 杰克缝纫机股份有限公司 | Sewing machine and needle pitch adjusting mechanism thereof |
| CN108842311A (en) * | 2018-07-11 | 2018-11-20 | 杰克缝纫机股份有限公司 | A kind of sewing machine and its feed device |
| 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 |
| JP6555629B1 (en) * | 2019-02-15 | 2019-08-07 | 株式会社鈴木製作所 | sewing machine |
| CN110670248A (en) * | 2019-11-08 | 2020-01-10 | 杰克缝纫机股份有限公司 | Adjustable cloth feeding mechanism and sewing machine |
-
2020
- 2020-07-28 CN CN202010736754.9A patent/CN114000266B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010246839A (en) * | 2009-04-20 | 2010-11-04 | Juki Corp | Sewing machine |
| CN109338603A (en) * | 2018-10-24 | 2019-02-15 | 杰克缝纫机股份有限公司 | Sewing machine backstitches mechanism and sewing machine |
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