CN211339930U

CN211339930U - Automatic presser foot lifting mechanism of curve machine

Info

Publication number: CN211339930U
Application number: CN201921348478.8U
Authority: CN
Inventors: 朱广运; 朱龙明; 卢委丽; 王健
Original assignee: Zhejiang Longtai Sewing Equipment Co ltd
Current assignee: Zhejiang Longtai Sewing Equipment Co ltd
Priority date: 2019-08-19
Filing date: 2019-08-19
Publication date: 2020-08-25
Anticipated expiration: 2029-08-19

Abstract

The utility model relates to a sewing machine spare part field especially relates to a presser foot mechanism is lifted in automation of curve machine. The lifting and pressing device comprises a shaft pin penetrating through a machine body, wherein two ends of the shaft pin extend to the outer side of the machine body, a lifting and pressing crank is arranged at one end of one side of the shaft pin, an electromagnet is arranged at a position, close to the lifting and pressing crank, of the machine body, a lifting and pressing deflector rod is arranged at the end of the other side of the shaft pin, the end of the lifting and pressing deflector rod is tightly attached to one end of a lifting and pressing support arranged on the machine body in a rotating mode, a pull rod is fixedly connected to the other end of the lifting and pressing support, the other end of the pull rod is fixedly connected with a. The utility model overcomes the defects of more installation procedures, troublesome installation and the like caused by unreasonable position arrangement of each component of the automatic presser foot lifting mechanism in the prior art, so that the layout among each component is reasonable; the structure is simple, and the installation is simple and convenient; effectively transmitting the pulling force, and having less energy calculation loss and the like.

Description

Automatic presser foot lifting mechanism of curve machine

Technical Field

The utility model relates to a sewing machine spare part field especially relates to a presser foot mechanism is lifted in automation of curve machine.

Background

The sewing machine can sew fabrics such as cotton, hemp, silk, wool, artificial fiber and the like and products such as leather, plastic, paper and the like, and the sewed stitches are neat, beautiful, flat and firm, the sewing speed is high, and the use is simple and convenient. At present, many industrial sewing machines all adopt automatic presser foot lifting mechanisms, realize sewing automation, greatly reduce people's intensity of labour, but many automatic presser foot lifting mechanisms set up unreasonablely, often have the structure complicated, install troublesome shortcoming.

For example, chinese patent literature discloses a built-in automatic presser foot lifting mechanism of a sewing machine [ application No. 201320162643.7; authorization notice number: CN203159869U ], the mechanism comprises a casing, a linear driver, a rear lever, a front lever and a pull rod, the casing comprises a column part, a cavity is arranged in the column part, the linear driver is fixedly installed in the cavity, the linear driver comprises a pull rod capable of linearly reciprocating, the rear end of the rear lever is connected with the end part of the pull rod, the front end of the rear lever comprises two pin holes, wherein the first front pin hole is rotatably connected on the casing through a pin shaft, and the distance from the rear end of the rear lever to the first front pin hole is greater than the distance from the second front pin hole to the first front pin hole. The front lever comprises three pin holes, the first pin hole is rotatably connected to the machine shell through a pin shaft, and the second pin hole is hinged to the presser foot lifting plate. The rear end of the pull rod is hinged with the second front pin hole of the rear lever, and the front end of the pull rod is hinged with the third pin hole of the front lever.

In the mechanism, the linear driver is electrified, the traction rod is pushed upwards to drive the rear lever, the pull rod and the front lever to move, so that the work of lifting the presser foot is completed, the mechanism has the characteristic of labor saving, and the labor intensity of people is reduced. However, the draw bar and the rear lever in the mechanism are hinged through the rear pin hole, so that the installation is troublesome, the installation procedures are multiple, and meanwhile, all the components are installed on the same side, so that the arrangement of the side is more narrow and the installation is difficult.

Disclosure of Invention

The utility model relates to an overcome the automation among the prior art and lift presser foot mechanism because the position of each part sets up unreasonablely, leads to the installation procedure many, defect such as the installation is troublesome provides one kind can each part position set up rationally, installs simple process's a curve machine's automation simultaneously and lifts presser foot mechanism.

In order to achieve the purpose, the utility model is realized by the following technical scheme:

the automatic presser foot lifting mechanism of the curve machine comprises a shaft pin penetrating through a machine body, wherein two ends of the shaft pin extend to the outer side of the machine body, a pressure lifting crank is arranged on one side end of the shaft pin, an electromagnet is arranged at the position, close to the pressure lifting crank, of the machine body, a rod core on the electromagnet is abutted against the pressure lifting crank, a pressure lifting deflector rod is arranged at the end of the other side end of the shaft pin, the end of the pressure lifting deflector rod is tightly attached to one end of a pressure lifting support arranged on the machine body in a rotating mode, a pull rod is fixedly connected to the other end of the pressure lifting support, the other end of the pull rod is fixedly connected with a pressure lifting guide frame, and the pressure lifting guide frame is rotatably connected with.

The utility model discloses in set up the great electro-magnet of volume and other subassemblies respectively in the both sides of fuselage, effectively utilized the space for position between each part is no longer relatively restricted, thereby is more convenient when letting each part installation, and it is easier to install.

Preferably, the shaft pin is composed of a cylindrical rotating shaft arranged in the machine body and a hexagonal transmission shaft arranged at a position close to the pressure lifting crank, the end part of the hexagonal transmission shaft is provided with a fixing piece in a cuboid structure, and the fixing piece is provided with a fixing screw hole in the horizontal direction of the main body of the fixing piece.

The utility model discloses divide into columniform pivot and hexagonal prism form's transmission shaft with the pivot, columniform pivot setting wherein plays the effect that thereby the rotation drove and lifts the pressure driving lever, and the effect of transmission shaft lies in fixedly lifting the pressure crank, transmits the strength of coming with the electro-magnet through lifting the pressure crank and transmitting the pivot again.

Preferably, a fixing groove with the shape and the size matched with the fixing piece is arranged at the joint of the pressure lifting crank and the shaft pin, a fixing through hole is arranged at the position of the fixing screw hole, and a fixing stud is further arranged between the fixing screw hole and the fixing through hole in an inserting mode, so that the pressure lifting crank and the shaft pin are fixedly connected.

The utility model provides a lift and press crank and pivot to pass through the mutual buckle between fixed slot and the mounting to can effectively fix and can effectively transmit the rotation.

Preferably, the upper end face of the fixing piece on the shaft pin is also provided with a positioning shaft, the upper end of the fixing groove of the pressure lifting crank is provided with a positioning through hole, and the positioning shaft penetrates through the positioning through hole.

The crank and the shaft pin can be efficiently positioned, installed and pressed by arranging the positioning shaft and the positioning through hole.

Preferably, a convex rod protruding outwards is arranged at the position, close to the lifting and pressing support, of the lifting and pressing deflector rod, and the convex rod and the lifting and pressing support are abutted to each other.

The convex rod is arranged, so that the force specially transferred to the lifting and pressing shift rod through the rotating shaft can be accurately transferred to the lifting and pressing support, and even if the lifting and pressing support has certain distortion, the lifting and pressing shift rod can also drive the lifting and pressing support to move.

Preferably, the machine body is provided with a fixing shaft, the top end of the fixing shaft is provided with a threaded section, the pressure lifting support is provided with a shaft hole, the fixing shaft penetrates through the shaft hole, and a fixing nut is further arranged on the threaded section of the fixing shaft protruding out of the shaft hole.

Preferably, the fixed connection positions of the pressure lifting support and the pressure lifting guide frame and the pull rod are respectively provided with a first connection hole and a second connection hole, two ends of the pull rod are respectively provided with a bent section, and the two bent sections respectively penetrate through the first connection hole and the second connection hole.

The utility model discloses well lift and press the support and lift and press the guide frame and be provided with first connecting hole and second connecting hole respectively to with its curved segment fixed connection at both ends of pull rod, thereby effectual transmission pulling force. Meanwhile, the structure of the pull rod is simple, so that the total steps in the installation process are also very simple.

Therefore, the utility model discloses following beneficial effect has:

(1) the layout of all parts is reasonable;

(2) the structure is simple, and the installation is simple and convenient;

(3) the tension is effectively transmitted, and the energy calculation loss is less.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a front view of the present invention.

Fig. 3 is a back view of the present invention.

Fig. 4 is a front view of the shaft pin of the present invention.

Fig. 5 is a schematic structural view of the pressure lifting crank of the present invention.

Fig. 6 is a schematic structural view of the pressure lifting support of the present invention.

Fig. 7 is a schematic structural view of the fixing shaft of the present invention.

Fig. 8 is a schematic view of the connection relationship between the pressure lifting support, the fixed shaft and the pull rod of the present invention.

Fig. 9 is a schematic structural view of the pressure lifting guide frame of the present invention.

Wherein: the lifting and pressing device comprises a machine body 1, a shaft pin 2, a lifting and pressing crank 3, an electromagnet 4, a lifting and pressing deflector rod 5, a lifting and pressing support 6, a pull rod 7, a lifting and pressing guide frame 8, a rotating shaft 9, a transmission shaft 10, a fixing piece 11, a fixing screw hole 12, a fixing groove 13, a fixing through hole 14, a fixing stud 15, a positioning shaft 16, a positioning through hole 17, a convex rod 18, a fixing shaft 19, a shaft hole 20, a threaded section 21, a fixing nut 22, a first connecting hole 23, a second connecting hole 24, a bending section 25 and a rod core 26.

Detailed Description

The invention is further described with reference to the drawings and the specific embodiments.

As shown in fig. 1 to 3, an automatic presser foot lifting mechanism of a curve machine comprises a shaft pin 2 penetrating through a machine body 1, two ends of the shaft pin 2 extend to the outer side of the machine body 1, a pressure lifting crank 3 is arranged on one side end of the shaft pin 2, an electromagnet 4 is arranged on the machine body 1 near the pressure lifting crank 3, a rod core 26 on the electromagnet 4 is abutted against the pressure lifting crank 3, so that the rod core 26 can continuously push the pressure lifting crank 3 to drive the shaft pin 2 when the electromagnet 4 works, a pressure lifting deflector rod 5 is arranged on the other side end of the shaft pin 2, the pressure lifting deflector rod 5 can correspondingly rotate when the shaft pin 2 rotates, because the end of the pressure lifting deflector rod 5 is tightly attached to one end of a pressure lifting support 6 rotatably arranged on the machine body 1, the pressure lifting deflector rod 5 can drive the pressure lifting support 6 to move up and down, a pull rod 7 is fixedly connected to the other end of the pressure support 6, the other end of the pull rod 7 is fixedly connected with the pressure lifting guide frame 8, so that the power of the pressure lifting shift lever 5 can be transmitted to the pressure lifting guide frame 8 through the pull rod 7, the pressure lifting guide frame 8 is rotatably connected with the machine body 1, and the pressure lifting guide frame 8 can move up and down when being pulled by the pull rod 7.

As shown in fig. 4 and 5, the shaft pin 2 is composed of a cylindrical rotating shaft 9 disposed inside the body 1 and a hexagonal transmission shaft 10 disposed near the lifting and pressing crank 3, the end of the hexagonal transmission shaft 10 is provided with a fixing member 11 having a rectangular parallelepiped structure, the fixing member 11 is provided with a fixing screw hole 12 in the horizontal direction of the main body, and the upper end surface of the fixing member 11 on the shaft pin 2 is further provided with a positioning shaft 16. The joint of the pressure-lifting crank 3 and the shaft pin 2 is provided with a fixing groove 13 with the shape and the size matched with that of the fixing piece 11, a fixing through hole 14 is arranged at the position of the fixing screw hole 12, a positioning shaft 16 penetrates through the positioning through hole 17, and the upper end of the fixing groove 13 is provided with a positioning through hole 17. When the fixing groove 13 and the fixing member 11 are sleeved with each other, the positioning shaft 16 passes through the positioning through hole 17, the fixing screw hole 12 corresponds to the fixing through hole 14, and a fixing stud 15 is inserted between the fixing screw hole 12 and the fixing through hole, so that the pressure-lifting crank 3 is fixedly connected with the shaft pin 2.

As shown in fig. 1 and 6 to 9, a protruding rod 18 protruding outward is disposed at a position of the lifting and pressing lever 5 close to the lifting and pressing bracket 6, and the protruding rod 18 and the lifting and pressing bracket 6 abut against each other. Meanwhile, the machine body 1 is provided with a fixed shaft 19, the top end of the fixed shaft is provided with a threaded section 21, the pressure lifting support 6 is provided with a shaft hole 20, the fixed shaft 19 penetrates through the shaft hole 20, the threaded section 21 on the fixed shaft 19 protrudes out of the shaft hole 20, and meanwhile, a fixed nut 22 is further arranged on the fixed shaft.

The fixed connection positions of the pressure lifting support 6, the pressure lifting guide frame 8 and the pull rod 7 are respectively provided with a first connecting hole 23 and a second connecting hole 24, the two ends of the pull rod 7 are respectively provided with a bending section 25, and the two bending sections 25 respectively penetrate through the first connecting hole 23 and the second connecting hole 24, so that the rotation force of the pressure lifting support 6 can be transmitted to the pressure lifting guide frame 8 through the pull rod, and the pressure lifting guide frame 8 moves up and down.

The utility model discloses an each part transmission method as follows: after the electromagnet 4 is started, the rod core 26 moves forwards, the pressure lifting crank 3 rotates, the shaft pin 2 is driven to rotate, then the pressure lifting rod 5 rotates, the convex rod 18 on the pressure lifting rod 5 can drive the pressure lifting support 6 to rotate, the end, connected with the pull rod 7, of the pressure lifting support 6 moves upwards, the pull rod 7 is driven to move, the end, connected with the pull rod 7, of the pressure lifting guide frame 8 moves downwards, the end, disconnected with the pull rod 7, of the pressure lifting guide frame 8 moves upwards, after the electromagnet 4 is powered off, each rod core 26 resets, the pressure lifting crank 3 rotates to reset downwards under the action of gravity, and other parts also reset correspondingly.

Claims

1. An automatic presser foot lifting mechanism of a curve machine is characterized by comprising a shaft pin (2) which is arranged by penetrating a machine body (1), the two ends of the lifting and pressing crank (3) extend to the outer side of the machine body (1), the end part of one side of the shaft pin (2) is provided with the lifting and pressing crank (3), the machine body (1) is provided with an electromagnet (4) close to the lifting and pressing crank (3), a rod core (26) on the electromagnet (4) is mutually abutted against the lifting and pressing crank (3), the other side end of the shaft pin (2) is provided with a lifting and pressing deflector rod (5), the end part of the lifting and pressing deflector rod (5) is closely attached to one end of a lifting and pressing bracket (6) which is rotatably arranged on the machine body (1), the other end of the lifting and pressing bracket (6) is fixedly connected with a pull rod (7), the other end of the pull rod (7) is fixedly connected with a pressure lifting guide frame (8), and the pressure lifting guide frame (8) is rotatably connected with the machine body (1).

2. The automatic presser foot lifting mechanism of a curve machine according to claim 1, characterized in that the shaft pin (2) is composed of a cylindrical rotating shaft (9) arranged inside the machine body (1) and a hexagonal prism-shaped transmission shaft (10) arranged near the pressure lifting crank (3), the end of the hexagonal prism-shaped transmission shaft (10) is provided with a fixing piece (11) with a rectangular parallelepiped structure, and the fixing piece (11) is provided with a fixing screw hole (12) in the horizontal direction of the main body.

3. The automatic presser foot lifting mechanism of a curve machine according to claim 2, characterized in that a fixing groove (13) with a shape and size matched with the fixing piece (11) is arranged at the joint of the presser crank (3) and the shaft pin (2), a fixing through hole (14) is arranged at the fixing screw hole (12), and a fixing stud (15) is further inserted into the fixing screw hole (12) and the fixing through hole (14) so that the presser crank (3) and the shaft pin (2) are fixedly connected.

4. The automatic presser foot lifting mechanism of a curve machine according to claim 3, characterized in that the upper end surface of the fixing member (11) on the shaft pin (2) is further provided with a positioning shaft (16), the upper end of the fixing groove (13) of the pressure crank (3) is provided with a positioning through hole (17), and the positioning shaft (16) is arranged by penetrating through the positioning through hole (17).

5. The automatic presser foot lifting mechanism of a curve machine according to claim 1, characterized in that the lifting and pressing lever (5) is provided with a protruding rod (18) protruding outwards near the lifting and pressing bracket (6), and the protruding rod (18) and the lifting and pressing bracket (6) abut against each other.

6. The automatic presser foot lifting mechanism of a curve machine according to claim 1 or 5, characterized in that a fixing shaft (19) is arranged on the machine body (1), a threaded section (21) is arranged at the top end of the fixing shaft, a shaft hole (20) is arranged on the pressure lifting support (6), the fixing shaft (19) is arranged through the shaft hole (20), and a fixing nut (22) is further arranged on the threaded section (21) of the fixing shaft (19) protruding out of the shaft hole (20).

7. The automatic presser foot lifting mechanism of a curve machine according to claim 6, wherein a first connecting hole (23) and a second connecting hole (24) are respectively formed at the fixed connection positions of the lifting and pressing bracket (6), the lifting and pressing guide frame (8) and the pull rod (7), two ends of the pull rod (7) are respectively provided with a bent section (25), and the two bent sections (25) respectively penetrate through the first connecting hole (23) and the second connecting hole (24).