CN212316408U

CN212316408U - Thread cutting mechanism of zigzag sewing machine and rotating shuttle oil supply device

Info

Publication number: CN212316408U
Application number: CN202020269521.8U
Authority: CN
Inventors: 陈同俊
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-03-07
Filing date: 2020-03-07
Publication date: 2021-01-08
Anticipated expiration: 2030-03-07

Abstract

The utility model belongs to the technical field of the sewing machine, a tortuous sewing machine is related to, refer in particular to a tortuous sewing machine thread trimming mechanism and rotating shuttle oil supply unit, including setting up the sword subassembly that moves on the sewing machine base, move the sword subassembly including moving the knife rest, rotating the setting and have the sword that moves of hook-shaped end and set up the stationary knife on the sewing machine base on moving the knife rest, move the knife rest and be connected with the pull rod, the pull rod is connected with the impeller through the connecting rod, the pull rod is connected with the reset unit that can drive its and reset, be provided with the rotating shuttle axle on the sewing machine base, rotate on the rotating shuttle axle and be provided with knife rest roller gear, knife rest roller gear meshes with the bevel gear that sets up at the epaxial under, move the knife rest and establish on knife rest roller gear through integrative close-fitting bearing housing, move the knife and form the thread trimming motion with the stationary. The thread cutting mechanism has high thread cutting speed and high efficiency, and reduces the structural complexity; the rotating shuttle oil supply device enables the rotating shuttle core to lubricate and rotate in the rotating shuttle sleeve.

Description

Thread cutting mechanism of zigzag sewing machine and rotating shuttle oil supply device

Technical Field

The utility model belongs to the technical field of sewing machine, a tortuous sewing machine is related to, refer in particular to a tortuous sewing machine thread trimming mechanism and rotating shuttle oil supply unit.

Background

At present, in a thread trimming mechanism of an existing sewing machine, the thread trimming mechanism needs to realize a switching function between a thread trimming position and a non-thread trimming position, a forced resetting function and the like. For example, chinese patent 201811466317.9 discloses a thread trimming mechanism of a sewing machine and a sewing machine, wherein the thread trimming mechanism includes a lower shaft, a thread trimming cam, a driving shaft, a thread trimming return crank, a thread trimming spool and a driving source assembly, the lower shaft is rotatably disposed on a bottom plate of the sewing machine; the trimming cam is fixed on the lower shaft, the trimming cam is provided with a trimming section and a knife returning section, the driving shaft is parallel to the lower shaft and movably arranged on the bottom plate, the trimming knife returning crank is fixed on the driving shaft and is provided with a trimming part and a knife returning part, the trimming shaft and the lower shaft are coaxial and rotatably arranged on the bottom plate, the output end of the driving source assembly can slide towards the trimming shaft by driving the driving shaft, the trimming part and the knife returning part on the trimming knife returning crank can be respectively contacted with the trimming section and the knife returning section on the trimming cam, the driving shaft is connected with the trimming shaft through the torque transmission device, and the left end of the trimming shaft is provided with the trimming knife moving assembly. The principle of whole thread cutting process is according to zigzag machine technical performance requirement, the eedle is the horizontal hunting motion, the eedle position is unset, the scope that requires the action activity of thread cutting is big, work efficiency is low, the difficulty of design is high, the complexity is high, the required precision of design is high, high in production cost, and need many parts control thread cutting operation, the processing part is many, overall structure is very complicated, high in manufacturing cost, the design has torque transmission device between drive shaft and the thread cutting axle, power transmission has been increased, the complexity of structure has further been improved, and similar spout, boss etc. are all at the inside improvement of thread cutting axle, the required precision is high, the required precision of part is high, very easy damage.

In addition, when the sewing machine operates at high speed, effective lubrication is performed on the parts which move at high speed, such as the needle up-and-down moving mechanism or the rotating shuttle core and the rotating shuttle sleeve, and the like, so that the rotating shuttle of the existing zigzag sewing machine is not provided with an oil supply device, the rotating process of the rotating shuttle sleeve and the rotating lock core cannot be lubricated, the service life of the rotating shuttle is greatly reduced, and even the phenomenon of blocking can occur.

Disclosure of Invention

The utility model aims at providing a thread cutting mechanism and a rotating shuttle oil supply device of a zigzag sewing machine, the thread cutting mechanism reduces the required spare and accessory parts, reduces the structural complexity and greatly reduces the use cost; the rotating shuttle oil supply device ensures that lubricating oil can enter the groove of the rotating shuttle sleeve, so that the rotating shuttle sleeve and the rotating lock cylinder can perform a lubricating function in a relative rotation process, and the service life of the rotating shuttle is greatly prolonged.

The purpose of the utility model is realized like this: the utility model provides a tortuous sewing machine thread trimming mechanism, is including setting up the sword subassembly that moves on the sewing machine base, moves the sword subassembly and includes move the knife rest, rotate the setting and have the sword that moves of hook-shaped end and set up the stationary knife on the sewing machine base on moving the knife rest, it is connected with the pull rod to move the knife rest, and the pull rod is connected with the impeller through the connecting rod, the pull rod is connected with the reset unit that can drive its and reset, be provided with the rotating shuttle axle on the sewing machine base, rotate on the rotating shuttle axle and be provided with knife rest roller gear, knife rest roller gear meshes with the bevel gear that sets up epaxial under mutually, it establishes on knife rest roller gear through integrative close-fitting bearing housing to move the knife rest, it forms the thread trimming motion with the stationary knife cooperation under the.

In foretell tortuous sewing machine thread trimming mechanism, reset assembly establishes on sewing machine's lower shaft and can follow the rotatory cam of lower shaft, connecting rod double-screw bolt and connecting rod including the cover, the one end that the cam is close to the connecting rod is equipped with when the thread trimming contact connecting rod, pushes away the connecting rod around the rotatory reset of connecting rod double-screw bolt behind the thread trimming, and then drives the pull rod and moves the arc portion that the knife tackle spare resets.

In the thread trimming mechanism of the zigzag sewing machine, the tool rest rolling gear is provided with a fixing hole, the rotating shuttle sleeve is fixed on the tool rest rolling gear through a locking bolt, and the rotating shuttle core for placing the coil is arranged in the rotating shuttle sleeve.

In the thread trimming mechanism of the zigzag sewing machine, the sewing machine base is provided with the fixing plate, and the tension spring is arranged between the fixing plate and the connecting rod.

In the thread trimming mechanism of the zigzag sewing machine, the pushing piece is an electromagnet.

A zigzag sewing machine rotating shuttle oil supply device comprises the zigzag sewing machine thread trimming mechanism, an oil storage sleeve and an oil pump, wherein the oil storage sleeve is sleeved on a rotating shuttle shaft, the inner wall of the oil storage sleeve is provided with an oil storage tank, the outer wall of the oil storage sleeve is provided with an oil nozzle communicated with the oil storage tank, and the oil pump is connected with the oil nozzle through an oil pipe; an oil supply channel is arranged in the rotating shuttle shaft, and an oil inlet hole communicated with the oil supply channel is arranged on the rotating shuttle shaft corresponding to the oil storage groove.

In the rotating shuttle oil supply device of the zigzag sewing machine, the oil pipe is provided with an oil quantity switch.

In the oil supply device for the rotating shuttle of the zigzag sewing machine, oil seals are arranged at two ends or one end of the oil storage sleeve.

In the rotating shuttle oil supply device of the zigzag sewing machine, the oil storage sleeve is pressed on the inner side of the sewing machine, and one end of the rotating shuttle shaft corresponding to the oil storage sleeve is fixed on the outer side of the sewing machine through a fixing screw and a common gasket.

In the rotating shuttle oil supply device of the zigzag seam sewing machine, a shaft core is arranged in one end of the rotating shuttle shaft connected with the rotating shuttle sleeve, the shaft core is of a hollow structure, sponge is arranged in the shaft core, and the shaft core is in threaded connection with the rotating shuttle shaft.

Compared with the prior art, the utility model outstanding and profitable technological effect is: the thread cutting mechanism of the utility model has the advantages of high thread cutting speed and high efficiency, reduces the required spare parts, reduces the structural complexity, ensures that the layout of the thread cutting mechanism in the sewing machine is more reasonable, and greatly reduces the use cost; the rotating shuttle oil supply device supplies oil to an oil storage groove in the oil storage sleeve through an oil pipe by adopting an oil pump, the rotating shuttle shaft is provided with an oil inlet hole, lubricating oil enters the rotating shuttle shaft through the oil inlet hole, the lubricating oil leads to the lower end of the rotating shuttle sleeve through an oil supply channel in the rotating shuttle shaft, and the rotating shuttle rotates to disperse the lubricating oil into the rotating shuttle groove when in work, so that the rotating shuttle core can lubricate and rotate in the rotating shuttle sleeve, and the service life of the rotating shuttle is greatly prolonged; the shaft core and the cotton are responsible for reducing the oil output, and the oil output switch is responsible for the oil output at first.

Drawings

Fig. 1 is one of the schematic structural diagrams of the present invention.

Fig. 2 is a second schematic structural diagram of the present invention.

Fig. 3 is a schematic structural diagram of the oil supply device for the rotating shuttle of the present invention.

Fig. 4 is a second schematic structural view of the oil supply device of the rotating shuttle of the present invention.

Fig. 5 is a third schematic structural diagram of the present invention.

The reference numerals in the figures denote the meanings:

1-moving knife rest; 2-moving the knife; 3-fixing a cutter; 4-a pull rod; 5-a connecting rod; 6-a pusher; 7-rotating shuttle shaft;

8-tool holder rolling gear; 9-an integral tight-fitting bearing; 10-a cam; 11-connecting rod stud; 12-a connecting rod;

13-a fixation hole; 14-rotating shuttle sleeve; 15-fixing the plate; 16-a tension spring; 17-an oil storage sleeve; 18-a nipple;

19-an oil supply channel; 20-oil inlet hole; 21-oil seal; 22-an axial core; 23-arc shaped portion.

Detailed Description

The invention will be further described with reference to specific embodiments below:

in this embodiment: referring to fig. 1-5, a zigzag sewing machine thread trimming mechanism comprises a movable cutter component arranged on a sewing machine base, the movable cutter component comprises a movable cutter holder 1, a movable cutter 2 which is rotatably arranged on the movable cutter holder 1 and is provided with a hook-shaped end, and a fixed cutter 3 arranged on the sewing machine base, the movable cutter holder 1 is connected with a pull rod 4, the pull rod 4 is connected with a pushing piece 6 through a connecting rod 5, the pull rod 4 is connected with a reset component which can drive the pull rod to reset, a rotating shuttle shaft 7 is arranged on the sewing machine base, a cutter holder rolling gear 8 is rotatably arranged on the rotating shuttle shaft 7, the cutter holder rolling gear 8 is engaged with a bevel gear arranged on a lower shaft, the movable cutter holder 1 is sleeved on the cutter holder rolling gear 8 through an integral close-fitting bearing 9, by adopting the structure, when the cutter holder rolling gear 8 is driven by the bevel gear arranged on the lower shaft to rotate, the movable cutter, the movable knife 2 can be driven to rotate by a certain angle only by pushing and pulling the pull rod 4, and the difficulty of the utility model lies in that when the knife rest 1 is sleeved on the knife rest rolling gear 8, the respective motions cannot interfere with each other; the movable knife 2 is driven by the movable knife rest 1 to be matched with the fixed knife 3 to form a trimming motion; the utility model discloses a trimming mechanism trimming is fast, and is efficient, has reduced required accessories, has reduced the structural complexity for trimming mechanism's overall arrangement in the sewing machine is more reasonable, has greatly reduced use cost. The pushing member 6 is an electromagnet. The pushing member 6 can be a cylinder, a motor and other structures, in this embodiment, the pushing member 6 is preferably an electromagnet, and when the pushing member is used, the electromagnet can be externally connected with a controller and a power supply to realize automatic control; the reset component can drive the pull rod 4 to reset, and the pull rod 4 is connected with the movable knife rest 1 through an axial position screw.

Preferably, the reset assembly comprises a cam 10, a connecting rod stud 11 and a connecting rod 12, wherein the cam 10 is sleeved on a lower shaft of the sewing machine and can rotate along with the lower shaft, one end of the cam 10, which is close to the connecting rod 12, is provided with an arc-shaped part 23, the arc-shaped part is in contact with the connecting rod 12 during thread trimming and pushes the connecting rod 12 to rotate and reset around the connecting rod stud 11 after thread trimming, and then the pull rod 4 and the movable cutter assembly are driven to reset. The lower shaft of the sewing machine is of an existing structure and is not in the protection range of the patent, the lower shaft of the sewing machine is arranged on the sewing machine, and the lower shaft of the sewing machine can rotate under the driving of a motor of the sewing machine to finish the action required by sewing, and the details are not repeated.

Preferably, the rotating shuttle shaft 7 is provided with a fixing hole 13, a rotating shuttle sleeve 14 is fixed on the rotating shuttle shaft 7 through a locking bolt, and a rotating shuttle core for placing a coil is arranged in the rotating shuttle sleeve 14.

Preferably, a fixing plate 15 is provided on the sewing machine base, and a tension spring 16 is provided between the fixing plate 15 and the link 5. A tension spring 16 may be used to assist in the resetting.

A zigzag sewing machine rotating shuttle oil supply device comprises the zigzag sewing machine thread trimming mechanism, an oil storage sleeve 17 and an oil pump, wherein the oil storage sleeve 17 is sleeved on a rotating shuttle shaft 7, an oil storage groove is formed in the inner wall of the oil storage sleeve 17, an oil nozzle 18 communicated with the oil storage groove is formed in the outer wall of the oil storage sleeve 17, and the oil pump is connected with the oil nozzle 18 through an oil pipe; an oil supply channel 19 is arranged in the rotating shuttle shaft 7, and an oil inlet hole 20 communicated with the oil supply channel 19 is arranged on the rotating shuttle shaft 7 corresponding to the oil storage tank. The oil storage sleeve 17 is sleeved on the rotating shuttle shaft 7, the oil storage sleeve 17 is pressed on the inner side of the sewing machine, the rotating shuttle shaft 7 corresponds to one end of the oil storage sleeve 17 and is fixed on the outer side of the sewing machine through a fixing screw and a common gasket, the inner wall of the oil storage sleeve 17 is provided with an oil storage groove, the outer wall of the oil storage sleeve 17 is provided with an oil nozzle 18 communicated with the oil storage groove, the oil pump passes through an oil pipe and is connected with the oil nozzle 18, the oil nozzle 18 of the embodiment is a metal pipe arranged on the oil storage sleeve 17, and the oil pump can pump lubricating oil in the oil tank to the oil nozzle 18 through the oil pipe and enters the oil storage groove through the oil nozzle. An oil supply channel 19 is arranged in the rotating shuttle shaft 7, an oil inlet hole 20 communicated with the oil supply channel 19 is arranged on the rotating shuttle shaft 7 corresponding to the oil storage groove, and lubricating oil in the oil storage groove enters the oil supply channel 19 in the rotating shuttle shaft 7 through the oil inlet hole 20. The rotating shuttle shaft 7 is reliably connected with the rotating shuttle sleeve 14 through the locking bolt, so that the rotating shuttle shaft 7 and the rotating shuttle sleeve 14 rotate together, the fixed part is oil-tight, and the whole process is sealed. The rotating shuttle sleeve 14 is internally provided with a groove for accommodating the rotating shuttle peg, lubricating oil enters the groove of the rotating shuttle sleeve 14 through an oil supply channel 19, and under the action of centrifugal force generated by rotation of the rotating shuttle sleeve 14, the lubricating oil is dispersed to all positions of the groove, so that the relative rotation process of the rotating shuttle sleeve 14 and the rotating lock peg can play a role in lubricating. A shaft core 22 is arranged at one end of the rotating shuttle shaft 7 connected with the rotating shuttle sleeve 14, the shaft core 22 is of a hollow structure, sponge is arranged in the shaft core 22, and the shaft core 22 is in threaded connection with the rotating shuttle shaft 7; an oil quantity switch is arranged on the oil pipe; both ends of the oil storage sleeve 17 are provided with oil seals 21, and besides, the oil seals 21 can be arranged at one end of the oil storage sleeve 17, or the oil seals 21 are not arranged at all. The axle core 22 and the sponge are responsible for making the oil output reduce, and the oil volume switch is responsible for the oil output size at the beginning, and sealed pad is responsible for the sealed effect at oil storage cover 17 both ends respectively, and unnecessary lubricating oil drops the food tray at last.

The operating principle of the rotating shuttle oil supply device is as follows: the oil pump supplies oil to an oil storage groove in the oil storage sleeve 17 through an oil pipe, the rotating shuttle shaft 7 is provided with an oil inlet hole 20, lubricating oil enters the rotating shuttle shaft 7 through the oil inlet hole 20, the lubricating oil leads to the rotating shuttle sleeve 14 through an oil supply channel 19 in the rotating shuttle shaft 7, and the rotating shuttle rotates to disperse the lubricating oil into the rotating shuttle groove during working, so that the rotating shuttle core can lubricate and rotate in the rotating shuttle sleeve 14, and the service life of the rotating shuttle is greatly prolonged.

The above-mentioned embodiment is only the preferred embodiment of the present invention, and does not limit the protection scope of the present invention according to this, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A thread trimming mechanism of a zigzag sewing machine is characterized by comprising a movable cutter component arranged on a sewing machine base, wherein the movable cutter component comprises a movable cutter holder (1), a movable cutter (2) which is rotatably arranged on the movable cutter holder (1) and is provided with a hook-shaped end, and a fixed cutter (3) arranged on the sewing machine base, the moving knife rest (1) is connected with a pull rod (4), the pull rod (4) is connected with a pushing piece (6) through a connecting rod (5), the pull rod (4) is connected with a reset component which can drive the pull rod to reset, a rotating shuttle shaft (7) is arranged on the base of the sewing machine, a tool rest rolling gear (8) is rotatably arranged on the rotating shuttle shaft (7), the tool rest rolling gear (8) is engaged with a bevel gear arranged on the lower shaft, the movable knife rest (1) is sleeved on the knife rest rolling gear (8) through an integrated close-fitting bearing (9), the movable knife (2) is driven by the movable knife rest (1) to be matched with the fixed knife (3) to form a trimming motion.

2. The thread trimming mechanism for zigzag sewing machine according to claim 1, wherein: reset assembly establishes on sewing machine's lower shaft and can follow down rotatory cam (10), connecting rod double-screw bolt (11) and connecting rod (12) of axle including the cover, the one end that cam (10) are close to connecting rod (12) is equipped with contact connecting rod (12) when the trimming, promotes connecting rod (12) after the trimming and around connecting rod double-screw bolt (11) rotatory the resetting, and then drives pull rod (4) and moves arc portion (23) that the knife tackle spare resets.

3. The thread trimming mechanism for zigzag sewing machine according to claim 1, wherein: the rotating shuttle is characterized in that a fixing hole (13) is formed in the rotating shuttle shaft (7), a rotating shuttle sleeve (14) is fixed on the rotating shuttle shaft (7) through a locking bolt, and a rotating shuttle core for placing a coil is arranged in the rotating shuttle sleeve (14).

4. The thread trimming mechanism for zigzag sewing machine according to claim 1, wherein: a fixing plate (15) is arranged on the sewing machine base, and a tension spring (16) is arranged between the fixing plate (15) and the connecting rod (5).

5. The thread trimming mechanism for zigzag sewing machine according to claim 1, wherein: the pushing piece (6) is an electromagnet.

6. A zigzag sewing machine rotating shuttle oil supply device is characterized by comprising the zigzag sewing machine thread trimming mechanism according to any one of claims 1 to 5, and further comprising an oil storage sleeve (17) and an oil pump, wherein the oil storage sleeve (17) is sleeved on the rotating shuttle shaft (7), the inner wall of the oil storage sleeve (17) is provided with an oil storage groove, the outer wall of the oil storage sleeve (17) is provided with an oil nozzle (18) communicated with the oil storage groove, and the oil pump is connected with the oil nozzle (18) through an oil pipe; an oil supply channel (19) is arranged in the rotating shuttle shaft (7), and an oil inlet hole (20) communicated with the oil supply channel (19) is formed in the rotating shuttle shaft (7) corresponding to the oil storage groove.

7. The oil supply device for the rotating shuttle of a zigzag sewing machine according to claim 6, wherein: and an oil quantity switch is arranged on the oil pipe.

8. The oil supply device for the rotating shuttle of a zigzag sewing machine according to claim 6, wherein: and oil seals (21) are arranged at two ends or one end of the oil storage sleeve (17).

9. The oil supply device for the rotating shuttle of a zigzag sewing machine according to claim 6, wherein: the oil storage sleeve (17) is pressed on the inner side of the sewing machine, and one end of the rotating shuttle shaft (7) corresponding to the oil storage sleeve (17) is fixed on the outer side of the sewing machine through a fixing screw and a common gasket.

10. The oil supply device for the rotating shuttle of a zigzag sewing machine according to claim 6, wherein: a shaft core (22) is arranged at one end of the rotating shuttle shaft (7) connected with the rotating shuttle sleeve (14), the shaft core (22) is of a hollow structure, sponge is arranged in the shaft core (22), and the shaft core (22) is in threaded connection with the rotating shuttle shaft (7).