CN106948094B

CN106948094B - Needle bar clutch mechanism of sewing machine and double-needle machine

Info

Publication number: CN106948094B
Application number: CN201710340761.5A
Authority: CN
Inventors: 王明敏
Original assignee: Jack Sewing Machine Co Ltd
Current assignee: Jack Technology Co Ltd
Priority date: 2017-05-15
Filing date: 2017-05-15
Publication date: 2020-02-04
Anticipated expiration: 2037-05-15
Also published as: CN106948094A

Abstract

The invention provides a needle bar clutch mechanism of a sewing machine and a double-needle machine, and belongs to the technical field of double-needle machines. The needle rod clutch mechanism solves the problems that the existing needle rod clutch mechanism of the sewing machine has poor separation and reset stability to a needle rod and is easy to break down. This sewing machine needle bar clutching mechanism, including the sliding shaft, sliding shaft one end is connected with the release assembly, and the other end is connected with the subassembly that resets, and the release assembly includes the pivot, the spanner and installs the extension board subassembly on the aircraft nose, has plectrum and spacing post on the spanner, is equipped with detection assembly between extension board subassembly and the spanner, and detection assembly is used for detecting the left and right swing of above-mentioned spanner and produces left and right separation signal respectively and give foretell sewing machine automatically controlled, and fixed mounting has the driver of being connected with sewing machine electricity accuse on the extension board subassembly. The clutch mechanism has the advantages of simple and attractive structure, convenience in operation, automatic reset and good separation reset stability.

Description

Needle bar clutch mechanism of sewing machine and double-needle machine

Technical Field

The invention belongs to the technical field of sewing and relates to a needle bar clutch mechanism of a sewing machine and a double-needle machine.

Background

Two-needle sewing machines, also known as two-needle sewing machines, have two sewing needles, come out the effect that the double-thread is abreast, and each other is parallel. When the corner is sewn, the corner sewing machine moves through a single needle rod, namely one needle rod is separated and does not work according to needs, then the needed number of needles are sewn, sewing is stopped, the presser foot is lifted, the sewing material is rotated according to the actual corner angle, then the needed number of needles are sewn, and after the sewing material is finished, the movement of the double needle rods is recovered, namely the needle rods separated before are reset. The double needle bars of the double-needle machine are the left needle bar and the right needle bar, the left needle bar or the right needle bar is separated and reset according to actual needs, and how to realize the separation and the reset of the left needle bar and the right needle bar is very important for the work of the double-needle machine.

The needle bar separating and resetting device of the existing double-needle machine comprises a separating component and a resetting component which are respectively used for starting or ending the corner sewing. At present, the separator assembly includes switch subassembly, limiting plate, stopper, spring and the board that resets, the switch subassembly includes a switching spanner. The switch component is arranged on the machine head of the double-needle machine, the switch component is connected with one end of the sliding shaft through the shaft arm, the reset component is arranged at the other end of the sliding shaft, and the spring is in a compressed state. When the angle is sewed (left curved sewing or right curved sewing), the switching wrench is manually pulled to enable the sliding shaft to move to the right or left so as to separate the left needle rod or the right needle rod, and a limiting block on the switching wrench is clamped by a limiting plate so as to keep the separated state of the left needle rod or the right needle rod; when resetting, the reset plate is manually pressed, the switching spanner is returned to the initial state, and the sliding shaft is returned to the initial state under the action of the reset assembly. The above structure has the following disadvantages: the operation of separating the needle rods is realized by manually wrenching the switching wrench, and the operation process is not easy to master; particularly, after the needle bars are separated, the N1 and N2 needles sewn before and after the rotary sewing material are finished by manually rotating the hand wheel or pedaling, and the N1 is guaranteed to be N2, namely the number of needles which must be sewn the same twice before and after the rotary sewing material is manually controlled, so that errors are easy to occur, and the problems of rework, time and labor waste, low efficiency and unnecessary resource waste are caused; in addition, during the reset, need earlier will switch the spanner through manual pressing the board that resets and reset the back, just can reset the sliding shaft through the subassembly that resets to increase the operating procedure of needle bar separation, be unfavorable for batch production.

In order to solve the above problems, the prior art discloses a chinese patent with a publication number of CN103276539A, which is entitled "automatic separation and reset device for double needle machine", and the technical solution includes a sliding shaft, one end of the sliding shaft is connected with a separation component, and the other end is connected with a reset component, and the device is characterized in that: but the separator module includes a pendulum rod and a linear reciprocating motion's actuating lever, pendulum rod one end is connected with the sliding shaft, and the other end is connected with the actuating lever, and the middle part of pendulum rod rotationally connects on a mounting bracket, the actuating lever is connected with a actuating mechanism, actuating mechanism is connected with an automatic control system. According to the technical scheme, the left needle bar and the right needle bar are separated through the driving mechanism of the two-way electromagnet, the electromagnet is in an attraction state in the whole corner sewing process, and the electromagnet is easy to heat and burn out due to long-time attraction, so that the electromagnet can be easily heated and burn out due to long-time attraction under the conditions that the corner sewing distance is long and the needle bar with fault separation cannot be timely reset, and the whole double-needle machine cannot normally work.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provides a needle bar clutch mechanism of a sewing machine and the double-needle machine, which can realize high efficiency and stability of separation of a left needle bar and a right needle bar of the double-needle machine and is difficult to break down.

The purpose of the invention can be realized by the following technical scheme: the utility model provides a sewing machine needle bar clutching mechanism, includes the sliding shaft, sewing machine includes that sewing machine is automatically controlled, sliding shaft one end is connected with the release assembly, the other end and the reset subassembly of sliding shaft are connected, the release assembly includes pivot, spanner and installs the extension board subassembly on the aircraft nose, pivot one end is connected with above-mentioned sliding shaft, the other end and the above-mentioned spanner of pivot are connected, plectrum and spacing post have on the spanner, when above-mentioned plectrum is stirred to left and right direction, the corresponding left and right swing of foretell spanner, its characterized in that: the detection assembly is arranged between the support plate assembly and the wrench and used for detecting the left and right swinging of the wrench and respectively generating left and right separation signals to be transmitted to the sewing machine electric control, the support plate assembly is fixedly provided with a driver connected with the sewing machine electric control, after the wrench swings left and right, the limiting columns can be respectively limited by the left and right ends of the support plate assembly, and an output shaft of the driver drives the limited columns limited by the left and right of the support plate assembly to reset under the action of the driver.

In the above-mentioned needle bar clutch mechanism of sewing machine, the extension board subassembly include the extension board and be "L" type fixing base one, fixing base one is the sheet of being connected by a long limit and a minor face mutually perpendicular, above-mentioned driver fixed mounting is on a long limit medial surface of fixing base, above-mentioned extension board fixed mounting is on a minor face lateral surface of fixing base.

In the above clutch mechanism for the needle bar of the sewing machine, the detection assembly comprises a hall sensor assembly, a hall element mounting plate and a magnet mounting seat fixedly mounted on the wrench, the hall element mounting plate is fixedly mounted on the support plate or the sewing machine casing, the hall sensor assembly comprises a hall element, a left magnet and a right magnet, the hall element is fixedly arranged on the hall element mounting plate, the magnet mounting seat is provided with a left magnet mounting hole and a right magnet mounting hole, the left magnet and the right magnet are respectively mounted on the left magnet mounting hole and the right magnet mounting hole, the hall element is electrically controlled and connected with the sewing machine, and when the wrench swings left and right, the left magnet and the right magnet are respectively opposite to the hall element.

In foretell sewing machine needle bar clutching mechanism, the determine module include infrared sensor subassembly, fixed mounting transmitter mount pad and the receiver mount pad of fixed mounting on above-mentioned spanner on above-mentioned extension board, the infrared sensor subassembly includes an infrared emitter and left and right infrared receiver, infrared emitter sets firmly on the transmitter mount pad, left and right receiver mounting hole has on the receiver mount pad, above-mentioned left and right infrared receiver installs respectively on above-mentioned left and right receiver mounting hole, left and right infrared receiver be connected with foretell sewing machine electrical control, when foretell spanner left and right swing, left and right infrared receiver just to foretell infrared emitter respectively.

In the above mentioned needle bar clutch mechanism of sewing machine, the driver is installed under the machine body near the machine head.

In the above mentioned clutch mechanism for needle bar of sewing machine, the driver is an electromagnet or a cylinder with air source.

In the above clutch mechanism for the needle bar of the sewing machine, the output shaft of the driver is sleeved with the clamp spring and the first spring, the clamp spring is fixed in the middle of the output shaft, one end of the first spring abuts against the clamp spring, the other end of the first spring abuts against the driver, the outer end of the output shaft is connected with the connecting rod, the connecting rod is L-shaped, and the long edge of the connecting rod is connected with the outer end of the output shaft.

In foretell a sewing machine needle bar clutching mechanism, the long limit lateral surface of fixing base on install the connecting plate, the connecting plate include that the structure all is the guide part and the ejecting portion of "L" type, it has two bar holes to open on the long limit of guide part, be fixed with two guide bolts on the long limit lateral surface of above-mentioned fixing base, its nut diameter of guide bolt is greater than the minor face bore in above-mentioned bar hole, two guide bolts install respectively in two bar holes and to the long limit of guide part spacing from top to bottom, the guide part is long to be realized controlling the direction removal through the round trip movement about two relative bolts in hole, guide part minor face and ejecting portion minor face link firmly perpendicularly, and relative foretell extension board is just to parallel arrangement above guide part minor face and the ejecting portion, foretell connecting rod minor face passes through bolt fixed connection with ejecting portion long limit.

In foretell sewing machine needle bar clutching mechanism, the horizontal extension of a long limit lateral surface of fixing base be formed with the fixing base two that is "L" type, two long limits of fixing base are formed by the long limit horizontal extension of fixing base, two minor faces of fixing base set up with a long limit of fixing base is perpendicular, the guide post has set firmly on the two minor face lateral surfaces of fixing base, and the cover is equipped with spring two on the guide post, has set firmly the deflector on the foretell guide part minor face lateral surface, and two one ends of above-mentioned spring set firmly on two short edges of fixing base, the other end of spring two sets firmly on foretell deflector.

In foretell sewing machine needle bar clutching mechanism, clutching mechanism still include the indicator panel through bolt fixed mounting on the aircraft nose, the indicator panel lower extreme is opened jaggedly, marks the sign that has "L" and "R" on the indicator panel lateral surface, directly over above-mentioned sign is located the breach, above-mentioned plectrum is located breach department, and the plectrum is perpendicular setting with the indicator panel, during initial condition, the plectrum just is located the intermediate position of sign "L" and "R".

In the above clutch mechanism for the needle bar of the sewing machine, the rotating shaft is connected with one end of the sliding shaft through a crank.

A double needle machine is characterized in that: the double-needle machine is provided with the needle bar clutch mechanism of the sewing machine.

Compared with the prior art, the needle bar clutch mechanism of the sewing machine has the following advantages:

1. the automatic reset device is simple in structure and convenient to operate, can realize an automatic reset function by controlling the work of the driver, and is more intelligent and convenient; meanwhile, the driver can be closed, the corner sewing operation is purely manually realized, and the function of manually sewing the corner is structurally reserved;

2. the detection assembly with a simple structure is used for realizing the separated induction of the left needle rod and the right needle rod, the induction accuracy is high, the control is simple, the cost is low, and the device is stable and reliable;

3. the driver is arranged below the machine body close to the machine head, the structural characteristics of the machine head machine body are reasonably utilized, the concealment is good, other structural operations on the machine head machine body are not influenced, and meanwhile, the overall appearance is attractive;

4. various corners and multiple sections of corners can be sewn, different programs are controlled and called and the sewing needle number of different sewing sections of the corners is set on an operation panel of the sewing machine through the computer program setting on the electric control of the sewing machine, so that the sewing of different types of corners, two or more than three sections of corners and the same or different needle numbers of each section of the corners can be automatically completed, no error is generated in the sewing of the needle numbers, and the sewing is accurate and intelligent, so that the sewing efficiency and the sewing quality are high;

5. because the separation state of the needle bars is kept through the mechanical structure, the needle bars can be separated for a long time to realize the operation of a single needle bar, and the problem that the electromagnet is heated when in an electrified state for a long time in the prior art is effectively solved.

Drawings

Fig. 1 is a structural view of the clutch structure applied to a double needle machine.

Fig. 2 is a partial configuration view of the clutch mechanism when the needle bar is not separated.

Fig. 3 is a partial configuration view of the clutch mechanism when the left needle bar is separated.

Fig. 4 is a structural view of a part of the connection plate and the fixing base in the clutch mechanism.

Fig. 5 is a structural view of the clutch mechanism mounted on the head body.

FIG. 6 is a structural view of the Hall element mounting plate of the clutch mechanism directly fixed on the sewing machine housing.

In the figure, 1, a slide shaft; 2. a crank; 3. a rotating shaft; 4. a wrench; 41. a magnet mounting base; 42. a left magnet; 43. a right magnet; 44. a limiting column; 45. a shifting sheet; 5. a first fixed seat; 51. a guide bolt; 6. a support plate; 61. a Hall element mounting plate; 62. a Hall element; 7. an electromagnet; 71. an output shaft; 8. a connecting plate; 81. a guide portion; 811. a strip-shaped hole; 82. a pushing-out part; 9. a clamp spring; 10. a first spring; 11. a connecting rod; 12. a second fixed seat; 13. a guide post; 14. a second spring; 15. a guide plate; 16. an indicator panel; 161. a notch; 17. a reset assembly; 18. a machine head; 19. a fuselage.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in figures 1, 2 and 3, the needle bar clutch mechanism of the sewing machine is used on a double-needle machine and comprises a sliding shaft 1, wherein one end of the sliding shaft 1 is connected with a separating component, and the other end of the sliding shaft 1 is connected with a resetting component 17. It is understood that the sewing machine further includes a head 18, a body 19, an electric control and operation panel of the sewing machine, and the structure and operation principle thereof are well known in the art and will not be described in detail. In the electric control of the sewing machine, a computer program can be compiled in advance to sew various different types of corners (such as straight line corners or arc corners), different sections of corners (such as two sections or more than two sections) and sewing modules of each section of needles to be sewn (such as the same or partially same or different sections of needles), then an operator inputs the sewing modules corresponding to the corners to be sewn and the specific number of sewing needles of each section through an operation panel, and the electric control of the sewing machine executes the responsive sewing work according to the setting.

The structure of the reset assembly 17 is the prior art, the structure of the reset assembly 17 is disclosed in detail in the chinese patent publication No. CN103276539A, and meanwhile, the structure and principle of the reciprocating movement of the sliding shaft 1 to separate and reset the needle bar are also described in detail in the chinese patent publication No. CN103276539A, which are all the prior art and are not described in detail herein.

The separating component comprises a rotating shaft 3, a wrench 4 and a support plate component arranged on the machine head 18, one end of the rotating shaft 3 is connected with one end of the sliding shaft 1 through a crank 2, and the other end of the rotating shaft is fixedly connected with the upper end of the wrench 4. The support plate assembly comprises a support plate 6 and a first L-shaped fixed seat 5, the first fixed seat 5 is a sheet formed by vertically connecting a long edge and a short edge, the support plate 6 is fixedly installed on the outer side face of the short edge of the first fixed seat 5, and the first fixed seat 5 is fixedly installed on the machine head 18 and serves as a carrier for supporting other structures. The Hall element mounting plate 61 is fixedly arranged at the upper end part of the support plate 6, the Hall element 62 is arranged on the Hall element mounting plate 61, and the Hall element 62 is electrically controlled and connected with the sewing machine. During assembly, the hall element 62 is first mounted on the hall element mounting plate 61 (the hall element is relatively difficult to mount, and therefore, the mechanism is mounted in advance), and then the hall element mounting plate 61 is mounted on the stay 6, so that the assembly is convenient. Of course, the hall element mounting plate 61 may be directly fixedly mounted on the sewing machine housing, as shown in fig. 6.

The lower extreme of spanner 4 extends perpendicularly and forms plectrum 45, the tip sets firmly spacing post 44 under spanner 4, spacing post 44 sets up with spanner 4 is perpendicular, 4 middle parts of spanner are equipped with magnet mount pad 41, magnet mount pad 41 upper end is passed through the bolt fastening on spanner 4, the tip is left down, it has left respectively to open on the right both ends, right magnet mounting hole, it is left, install left respectively on the right magnet mounting hole,

right magnet

42,43, it is left, right magnet 42, the magnetism size of 43 is different, like this when left and

right magnet

42,43 is just to the time with hall element 62 respectively, the voltage size that hall element 62 detected the production can be different, according to the voltage size, the automatically controlled ability of sewing machine knows spanner 4 is the left swing, still the right swing, thereby start corresponding module of making up. When the plectrum 45 is shifted to move left/right, the right/left magnet can be opposite to the Hall element 62, and the Hall element 62 generates a corresponding voltage signal to control the sewing machine electrically. The Hall element 62 and the two magnets have simple structures, the simple structure can realize the induction of the separation of the left needle bar and the right needle bar, the cost is low, and the control is simple.

The structures of the hall element mounting plate 61, the hall element 62, the magnet mounting base 41, the left and

right magnets

42 and 43, and the like in the present embodiment may be replaced by structures of a transmitter mounting base, an infrared transmitter, a receiver mounting base, a left and right infrared receiver, and the like, and in addition, the above structures may be replaced as long as an inductor capable of detecting a horizontal swing signal is realized.

The long side horizontal extension of fixing base one 5 is formed with two 12 fixing bases that are "L" type, and two 12 long limits of fixing base form by the long horizontal extension of one 5 long limits of fixing base, and two 12 minor faces of fixing base set up with one 5 long limits of fixing base is perpendicular. The driver is an electromagnet 7, but can also be an air cylinder with an air source, and the air source can be an air pump source. The electromagnet 7 is fixedly arranged on the long edge of the second fixed seat 12 horizontally extending out of the first fixed seat 5 through a bolt. The driver is arranged below the machine body 19 close to the machine head 18, the structural characteristics of the machine body 19 of the machine head 18 are reasonably utilized, the concealment is good, other structural operations on the machine body 19 of the machine head 18 are not influenced, and meanwhile, the whole appearance is attractive, as shown in fig. 5.

An output shaft 71 of the driver is sleeved with a clamp spring 9 and a spring I10, the clamp spring 9 is fixed in the middle of the output shaft 71, one end of the spring I10 abuts against the clamp spring 9, the other end of the spring I10 abuts against the driver, the outer end of the output shaft 71 is connected with a connecting rod 11, and the connecting rod 11 is L-shaped. A through groove is formed in the short edge of the first fixing seat 5, a notch is formed in the lower end of the support plate 6, and the outer end of the output shaft 71 is fixedly connected with the short edge of the connecting rod 11 through the through groove and the notch. And a guide post 13 is fixedly arranged on the outer side surface of the short side of the second fixed seat 12, a second spring 14 is sleeved on the guide post 13, one end of the second spring 14 is fixedly arranged on the short side of the second fixed seat 12, and the other end of the second spring is fixedly arranged on the guide plate 15.

A connecting plate 8 is arranged on the outer side surface of the long side of the first fixing seat 5, the connecting plate 8 comprises a guide part 81 and a push-out part 82 which are L-shaped in structure, two strip-shaped holes 811 are formed in the long side of the guide part 81, as shown in FIG. 4, two guide bolts 51 are fixed on the outer side of the long side of the first fixed seat 5, the diameter of the nut of each guide bolt 51 is larger than the diameter of the short side of each strip-shaped hole 811, the two guide bolts 51 are respectively installed in the two strip-shaped holes 811 and limit the long side of the guide part 81 up and down, the long side of the guide part 81 realizes left-right guide movement through the left-right back-and-forth movement of the two holes relative to the bolts, the short side of the guide part 81 is vertically fixedly connected with the, the short side of the guide part 81 and the upper side of the push-out part 82 are arranged in parallel opposite to the support plate 6, the short side of the connecting rod 11 and the long side of the push-out part 82 are fixedly connected through a bolt, and the guide plate 15 is fixed on the outer side face of the short side of the guide part 81.

The clutch mechanism further comprises an indicating plate 16 fixedly mounted on the machine head 18 through bolts, a notch 161 is formed in the lower end of the indicating plate 16, marks of 'L' and 'R' are marked on the outer side face of the indicating plate 16, the marks are located right above the notch 161, the poking piece 45 is located at the notch 161, the poking piece 45 and the indicating plate 16 are vertically arranged, and in the initial state, the poking piece 45 is located at the middle position of the marks of 'L' and 'R'.

The working principle is as follows:

as shown in fig. 2, in the initial state, the hall element 62 is located at the middle position of the left and

right magnets

42,43, the pick 45 is located at the middle position of the marks "L" and "R", the position-limiting column 44 is located at the middle of the two side ends of the support plate 6, and at this time, the left and right needle bars of the double needle machine work simultaneously. When the needle is sewn to the left corner, as shown in fig. 3, the left needle bar is separated to make the left needle bar not work, only the right needle bar works, at this time, the worker pokes the poking piece 45 to the left, namely, to mark the direction of "L", and the sliding shaft 1 is driven to move to the left through the wrench 4, the rotating shaft 3 and the crank 2 in sequence, so that the separation of the left needle bar is realized, at this time, the reset spring on the reset assembly 17 is in a compressed state, and the structure and the principle of how to realize the left movement of the sliding shaft 1 to separate the left needle bar are the prior art, and the detailed description is omitted from paragraph 58 to paragraph 63 in the chinese patent specification with publication No. CN 103276539A. At the moment, the wrench 4 swings leftwards, the right magnet swings leftwards and is arranged opposite to the Hall element 62, the Hall element 62 senses and generates a voltage signal corresponding to the left swing to be electrically controlled by the sewing machine, the sewing machine electrically controls and receives the signal and then starts a sewing module corresponding to the left corner to perform corner sewing, and the corner type, the segment number and the needle number of each segment are preset. Meanwhile, after the wrench 4 swings to the left, the limiting column 44 on the wrench 4 correspondingly swings to the outside of the left end face of the support plate 6 to the left, then the worker applies force to the wrench 4 in the direction of the support plate 6 to push the limiting column 44 to be clamped on the side face of the left end of the support plate 6 to be limited, the force limiting the side face of the left end of the support plate 6 to the limiting column 44 overcomes the restoring force of the restoring spring on the resetting component 17, and therefore after the worker releases the shifting piece 45, the sliding shaft 1 of the worker cannot move to the right to reset the restoring force of the restoring spring on the resetting component 17, and therefore the left needle rod is always in a. Meanwhile, the wrench 4 pushes the connecting plate 8 to move towards the support plate 6, the connecting plate 8 drives the connecting rod 11 and the guide plate 15 to move towards the support plate 6, the connecting rod 11, the output shaft 71 and the snap spring 9 move towards the electromagnet 7, the output shaft 71 retracts into the electromagnet 7, and the first spring 10 is compressed. The clamp spring 9 plays a limiting role, and prevents the pushing amplitude from being too large and other structures from being damaged due to mutual collision. The connecting plate 8 moves towards the direction of the support plate 6, the strip-shaped hole 811 on the long side moves towards the left side relative to the guide bolt 51, the two strip-shaped holes 811 play a role in guiding, the strip-shaped hole 811 and the guide bolt 51 cannot deviate front and back and can only move left and right in a guiding manner, so that the accuracy of the left and right guiding movement direction cannot deviate, the guiding stability is ensured, namely, the connecting rod 11 and the output shaft 71 move towards the left, the direction is accurate and stable, and the wrench 4 is pushed out by the output shaft 71 of the follow-up electromagnet 7 to reset smoothly without fault. At the same time, the guide plate 15 is also moved to the left, and the second spring 14 is compressed.

The right needle bar stops after sewing the set needle number N1 under the electric control of the sewing machine, and then an operator lifts the pressure foot and rotates the sewing material by a certain angle to wait for sewing the next section of the corner. And (3) lowering the lifting presser foot, electrically controlling the sewing machine by a signal given by stepping on the pedal, and controlling the right needle bar to continuously sew the needle number N2 by the electrically controlled sewing machine, wherein if the corner has a third section and a fourth section …, the sewing is carried out according to the same method, and the needle number N1 and the needle number N2 can be the same or different. After the sewing module is finished, namely the left corner is sewn, the sewing machine electrically controls the electromagnet 7 to work, the output shaft 71 is pushed out to push the wrench 4 out through the connecting plate 8 (the connecting plate 8 is in contact connection with the wrench 4), namely the electromagnet moves to the right, meanwhile, the first spring 10 resets under the restoring force effect and is matched with the output shaft 71 of the electromagnet 7 to separate the limiting column 44 on the wrench 4 from the limiting position of the side surface of the left end of the support plate 6 and enable the limiting column 44 to be far away from the support plate 6, meanwhile, the guide plate 15 moves to the right, and the second spring 14 resets under the self restoring force effect. After the limiting column 44 on the wrench 4 loses the limiting on the side surface of the left end of the support plate 6, the acting force of the support plate 6 on the limiting column 44 is lost, the sliding shaft 1 moves to the right under the restoring force of the restoring spring of the restoring component 17 to restore to the initial state, the left needle rod restores, the left needle rod and the right needle rod work normally at the same time, and meanwhile, the first spring 10 and the second spring 14 restore to the initial state.

When sewing the right corner, the principle is similar to the left corner, and the action direction is opposite, which is not described in detail.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Claims

1. The utility model provides a sewing machine needle pole clutching mechanism, includes sliding shaft (1), sewing machine includes that sewing machine is automatically controlled, sliding shaft (1) one end is connected with separator assembly, the other end and the subassembly (17) that resets of sliding shaft (1) are connected, separator assembly includes pivot (3), spanner (4) and installs the extension board subassembly on aircraft nose (18), pivot (3) one end is connected with above-mentioned sliding shaft (1), the other end and the above-mentioned spanner (4) of pivot (3) are connected, have plectrum (45) and spacing post (44) on spanner (4), when stirring above-mentioned plectrum (45) in left and right direction, corresponding left and right swing of foretell spanner (4), its characterized in that: the clutch mechanism also comprises a detection component, the detection component is used for detecting the left and right swing of the wrench (4) and respectively generating a left and right separation signal to be transmitted to the sewing machine electric control, a driver connected with the sewing machine electric control is fixedly installed on the support plate component, after the wrench (4) swings left and right, the limit column (44) can be respectively limited by the left and right ends of the support plate component, an output shaft (71) of the driver drives the limit column (44) limited by the left and right ends of the support plate component to reset under the action of the driver, the limit column (44) is limited by the left end or the right end of the support plate component to overcome the reset restoring force of the reset component, the sewing machine needle bar clutch mechanism also comprises a connecting plate (8) driven by the wrench (4) and a connecting rod (11) driven to move by the connecting plate (8), the connecting rod (11) is connected with the output shaft (71), when the wrench (4) pushes the connecting plate (8) to move towards the direction of the support plate assembly, the output shaft (71) retracts to limit the limiting column, and when the driver works, the driver drives the output shaft to push out the wrench (4) through the connecting plate (8) to enable the limiting column (44) to be separated from the limiting position of the support plate assembly.

2. The needle bar clutch mechanism of the sewing machine according to claim 1, characterized in that the support plate assembly comprises a support plate (6) and a first fixing seat (5) in an L shape, the first fixing seat (5) is a sheet material with a long side and a short side which are mutually perpendicularly connected, the driver is fixedly arranged on the inner side of the long side of the first fixing seat (5), and the support plate (6) is fixedly arranged on the outer side of the short side of the first fixing seat (5).

3. The needle bar clutch mechanism of sewing machine according to claim 2, wherein the detecting assembly comprises a hall sensor assembly, a hall element mounting plate (61) and a magnet mounting seat (41) fixedly mounted on the wrench (4), the hall element mounting plate (61) is fixedly mounted on the support plate (6) or the sewing machine housing, the hall sensor assembly comprises a hall element (62) and left and right magnets (42, 43), the hall element (62) is fixedly mounted on the hall element mounting plate (61), the magnet mounting seat (41) is provided with left and right magnet mounting holes, the left and right magnets (42, 43) are respectively mounted on the left and right magnet mounting holes, the hall element (62) is electrically connected with the sewing machine, when the wrench (4) swings left and right, the left and right magnets (42, 43) are respectively opposite to the Hall element (62).

4. The clutch mechanism of needle bar of sewing machine of claim 2, wherein said detecting assembly comprises an infrared sensor assembly, a transmitter mounting seat fixedly mounted on said support plate (6) and a receiver mounting seat fixedly mounted on said wrench (4), said infrared sensor assembly comprises an infrared transmitter and left and right infrared receivers, said infrared transmitter is fixedly mounted on the transmitter mounting seat, said receiver mounting seat has left and right receiver mounting holes, said left and right infrared receivers are respectively mounted on said left and right receiver mounting holes, said left and right infrared receivers are electrically connected with said sewing machine, when said wrench (4) swings left and right, said left and right infrared receivers are respectively opposite to said infrared transmitter.

5. A sewing machine needle bar clutch mechanism according to claim 3 or 4, characterised in that the drive is mounted below the body (19) adjacent the head (18).

6. A sewing machine needle bar clutch mechanism according to claim 3 or 4, characterized in that the actuator is an electromagnet (7) or a cylinder with air supply.

7. The needle bar clutch mechanism of the sewing machine according to claim 6, characterized in that a clamp spring (9) and a first spring (10) are sleeved on an output shaft (71) of the driver, the clamp spring (9) is fixed in the middle of the output shaft (71), one end of the first spring (10) abuts against the clamp spring (9), the other end of the first spring (10) abuts against the driver, a connecting rod (11) is connected to the outer end of the output shaft (71), the connecting rod (11) is L-shaped, and the long edge of the connecting rod (11) is connected with the outer end of the output shaft (71).

8. The needle bar clutch mechanism of the sewing machine according to claim 7, characterized in that the outer side of the long side of the first fixing seat (5) is provided with a connecting plate (8), the connecting plate (8) comprises a guide part (81) and a push-out part (82) which are both L-shaped in structure, the long side of the guide part (81) is provided with two strip-shaped holes (811), the outer side of the long side of the first fixing seat (5) is fixed with two guide bolts (51), the diameter of the nut of each guide bolt (51) is larger than the caliber of the short side of each strip-shaped hole (811), the two guide bolts (51) are respectively arranged in the two strip-shaped holes (811) and limit the long side of the guide part (81) up and down, the long side of the guide part (81) realizes left and right guide movement through the left and right movement of the bolts through the two holes, and the short side of the guide part (81) is, and the short edge of the guide part (81) and the upper edge of the push-out part (82) are arranged opposite to and parallel to the support plate (6), and the short edge of the connecting rod (11) is fixedly connected with the long edge of the push-out part (82) through a bolt.

9. The needle bar clutch mechanism of the sewing machine according to claim 8, characterized in that the long side of the first fixing seat (5) is horizontally extended to form a second fixing seat (12) in an "L" shape, the long side of the second fixing seat (12) is formed by horizontally extending the long side of the first fixing seat (5), the short side of the second fixing seat (12) is perpendicular to the long side of the first fixing seat (5), a guide post (13) is fixedly arranged on the outer side of the short side of the second fixing seat (12), a second spring (14) is sleeved on the guide post (13), a guide plate (15) is fixedly arranged on the outer side of the short side of the guide part (81), one end of the second spring (14) is fixedly arranged on the short side of the second fixing seat (12), and the other end of the second spring (14) is fixedly arranged on the guide plate (15).

10. The needle bar clutch mechanism of the sewing machine according to claim 2, characterized in that the clutch mechanism further comprises an indicating plate (16) fixedly mounted on the machine head (18) through bolts, a notch (161) is formed in the lower end of the indicating plate (16), marks of L and R are marked on the outer side face of the indicating plate (16), the marks are located right above the notch (161), the shifting piece (45) is located at the notch (161), the shifting piece (45) and the indicating plate (16) are vertically arranged, and in an initial state, the shifting piece (45) is just located in the middle of the marks of L and R.

11. A double needle machine is characterized in that: the double needle machine has the needle bar clutch mechanism of the sewing machine according to any one of claims 1 to 10.