CN210368203U - Presser foot lifting mechanism and overedger thereof - Google Patents

Abstract

The utility model discloses a lift presser foot mechanism and hemming machine thereof, wherein lift presser foot mechanism and include the presser foot actuating lever, and be used for the drive presser foot actuating lever pivoted motor drive assembly, motor drive assembly's drive division with be connected with the couple between the presser foot actuating lever, just motor drive assembly can pass through the couple drive the presser foot actuating lever rotates. The utility model uses the motor as the power source and is used for driving the presser foot driving rod to rotate, thereby realizing the automatic driving of the presser foot on the overedger, improving the stability of the overedger for the automatic driving of the presser foot, and being suitable for the overedger to work for a long time and with high frequency; meanwhile, the presser foot lifting mechanism generates less noise during integral working, has the function of noise reduction, and further meets the use requirements of people on the overedger.

Description

Presser foot lifting mechanism and overedger thereof

Technical Field

The utility model belongs to the technical field of the sewing, especially, relate to a lift presser foot mechanism and overedger thereof.

Background

The overedger is one of sewing machines, and can be used for edge wrapping, and can also be used for sewing sportswear, underwear, knitted fabrics and the like. The presser foot lifting assembly on the existing overedger is generally set as an automatic presser foot lifting assembly, so that the overedger can save time and reduce labor force during working, and the work efficiency is improved.

At present, a presser foot lifting assembly on the existing overedger uses an electromagnet as a power source to realize the automatic driving of a presser foot driving rod, and specifically as shown in the attached drawing 1, the presser foot lifting assembly comprises an electromagnet wall casing 1, an electromagnet (not shown) arranged in the electromagnet wall casing 1, a nylon tap 2 fixed on the electromagnet, and a presser foot lifting lever 3 matched with the nylon head 2, wherein the presser foot lifting lever 3 and the nylon tap 2 are of a split structure, the presser foot lifting lever 3 is connected with the presser foot driving rod 4 by a hook 5, so that when the presser foot lifting component on the overedger works, the electromagnet moves in the electromagnet wall shell 1, wherein the motion of the electromagnet can drive the nylon tap 2 to press and lift the presser foot lever 3, and the presser foot drive rod 4 is driven to rotate through the hook 5, the rotation of the presser foot drive rod 4 can be driven by the presser foot shaft 6 and the presser foot arm 7 to finally drive the presser foot 8.

After the pressure foot lifting assembly works for a long time at a high frequency, the electromagnet can generate heat and is powerless, and the electromagnet moves up and down in the electromagnet wall shell, so that the electromagnet and the electromagnet wall shell can generate large noise due to impact; on the other hand, the damping head and the pressure foot lifting lever can generate noise due to collision, so that the overall noise of the overedger is high during working.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a presser foot lifting mechanism and a overedger thereof, in which the presser foot lifting mechanism uses a motor as a power source for rotationally driving a presser foot driving rod, in order to solve the technical problems in the prior art.

The presser foot lifting mechanism comprises a presser foot driving rod and a motor driving assembly used for driving the presser foot driving rod to rotate, a hook is connected between a driving part of the motor driving assembly and the presser foot driving rod, and the motor driving assembly can drive the presser foot driving rod to rotate through the hook.

As the preferred scheme of the utility model, the couple for the presser foot actuating lever sets up perpendicularly.

As the utility model discloses an optimal scheme, the both ends of couple have hook portion, are defined as first hook portion and second hook portion respectively, hook portion hooks the presser foot actuating lever, hook portion hooks motor drive assembly's drive division is hooked to second hook portion.

As a preferred scheme of the utility model, the motor driving assembly comprises a motor fixing seat and a driving motor arranged on the motor fixing seat; the driving part is a pressure foot lifting lever, one end of the pressure foot lifting lever is rotatably arranged on the motor fixing seat through an axis position screw, and the driving motor can drive the pressure foot lifting lever to rotate on the motor fixing seat around the axis position screw.

As the utility model discloses a preferred scheme, be equipped with the cam in driving motor's the pivot portion, the cam support lean on in lift the presser foot lever, just driving motor can pass through cam drive lift the presser foot lever and rotate.

As the preferred scheme of the utility model, lift and rotationally be connected with the pulley on the presser foot lever, the gyro wheel face of pulley with the cooperation of cam butt.

As the utility model discloses a preferred scheme, the pulley inlay dress in lift the presser foot lever and keep away from on a side end of axle position screw to carry on spacingly with the pin.

As a preferred embodiment of the present invention, the driving motor is a stepping motor.

The utility model discloses still ask for protection a hemming machine, including the hemming machine body, and locate lift presser foot mechanism on the hemming machine body, it is the aforesaid arbitrary to lift presser foot mechanism.

As the utility model discloses a preferred scheme, motor drive mechanism passes through screw detachably to be fixed on the hemming machine body.

Because of above-mentioned technical scheme's application, compared with the prior art, the utility model have the following advantage:

the utility model provides a lift presser foot mechanism and hemming machine thereof uses the motor as the power supply for drive presser foot actuating lever rotates, realizes the automatic drive to the presser foot on this hemming machine with this to improve the stability of this hemming machine to the automatic drive of presser foot, is suitable for this hemming machine long time and high frequency work; meanwhile, the presser foot lifting mechanism generates less noise during integral working, has the function of noise reduction, and further meets the use requirements of people on the overedger.

Drawings

Fig. 1 is a schematic structural diagram of a overedger provided in the prior art.

Fig. 2 is a schematic structural view of an overlock machine according to an embodiment of the present invention.

FIG. 3 is an exploded view of a presser foot lifting mechanism in the overlock machine of FIG. 1, wherein a presser foot drive rod in a presser foot lifting cabinet is connected to a presser foot through a presser foot connecting arm and a presser foot power shaft.

Fig. 4 is an assembly diagram of a presser foot driving rod, a hook and a presser foot lifting lever in the presser foot lifting mechanism according to an embodiment of the present invention.

Wherein, 10, the overedger body; 11. a presser foot; 12. a presser foot connecting arm; 13. a presser foot power shaft; 14. A return spring; 20. a presser foot lifting mechanism; 21. a presser foot drive rod; 221. a motor fixing seat; 222. a drive motor; 223. lifting a presser foot lever; 224. a cam; 225. a pulley; 23. hooking; 231. a first hook portion; 232. a second hook portion; 101. an axial screw; 102. and a limiting pin.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Referring to fig. 2-4, an overlock machine according to an embodiment of the present invention includes an overlock machine body 10 and a presser foot lifting mechanism 20 disposed on the overlock machine body 10.

In this embodiment, the overedger body 10 is provided with a presser foot 11, a presser foot connecting arm 12 and a presser foot power shaft 13, wherein one end of the presser foot connecting arm 12 is fixedly connected to the presser foot 11, the other end thereof is fixedly connected to one end of the presser foot power shaft 13, and the other end of the presser foot power shaft 13 is connected to a presser foot driving lever 21 on the presser foot lifting mechanism 20, so that the presser foot driving lever 21 is driven to rotate when the presser foot lifting mechanism 20 is operated, and the presser foot 11 can be driven to move upward under the transmission of the presser foot power shaft 13 and the presser foot connecting arm 12, while the presser foot 11 is driven to move downward, and the reset spring 14 provided on the presser foot power shaft 13 resets, thereby realizing the vertical reciprocating movement of the presser foot when the overedger is operated. It should be noted that the connection relationship among the presser foot small lever 21, the return spring 14, the presser foot power shaft 13, the presser foot connecting arm 12 and the presser foot 11 is the structure of the existing overedger, and will not be described herein.

The presser foot lifting mechanism 20 of the present embodiment further includes a motor driving assembly for driving the presser foot driving lever 21 to rotate. That is, the presser foot lifting mechanism 20 of the present embodiment adopts a motor driving manner to realize the rotational driving of the presser foot driving lever 21, thereby solving the related technical problems caused by the existing presser foot lifting mechanism adopting an electromagnet driving manner.

In the present embodiment, a hook 23 is connected between the driving portion of the motor driving unit and the presser foot driving lever 21, and the motor driving unit can drive the presser foot driving lever 21 to rotate by the hook 23. Wherein the hook 23 is vertically disposed with respect to the presser foot drive lever 21. When the presser foot drive rod 21 is driven to rotate by the motor drive component of the presser foot lifting mechanism 20 of the present embodiment, the adjustment of the connection position when the hook 23 is connected with the presser foot drive rod 21 and the motor drive component respectively can be utilized to ensure that the motor drive component can drive the presser foot drive rod 21 in the vertical direction, so as to avoid the influence on the driving of the presser foot drive rod 21 due to the installation error of the motor drive component on the overedger body 10.

Specifically, the hook 23 has curved hook portions at two ends, which are respectively defined as a first curved hook portion 231 and a second curved hook portion 232, the first curved hook portion 231 of the hook 23 hooks the presser foot driving rod 21, and the second curved hook portion 232 hooks the driving portion of the motor driving assembly, so as to facilitate adjustment of the installation position between the hook 23 and the presser foot driving rod 21 and the driving portion of the motor driving assembly. So that the present embodiment can ensure that the drive part of the motor drive assembly drives the presser foot drive lever 21 in the vertical direction by adjusting the first hook part 231 of the hook 23 and the presser foot drive lever 21, and the second hook part 232 and the drive part of the motor drive assembly.

In this embodiment, the motor driving assembly includes a motor fixing seat 221 and a driving motor 222 disposed on the motor fixing seat 221, wherein the driving portion is a presser foot lifting lever 223, one end of the presser foot lifting lever 223 is rotatably disposed on the motor fixing seat 221 through a shaft screw 101, the driving motor 222 can drive the presser foot lifting lever 223 to rotate on the motor fixing seat 221 around the shaft screw 101, and the rotated presser foot lifting lever 223 can drive the presser foot driving lever 21 to rotate through the hook 23.

In the present embodiment, the driving motor 222 is a stepping motor, so that the driving motor 222 can be precisely controlled. It should be noted that the driving motor 222 is not limited to a stepping motor, and those skilled in the art can use the driving motor 222 as a servo motor according to the use requirement.

Specifically, a cam 224 is disposed on the rotating shaft portion of the driving motor 222, the cam 224 abuts against the presser foot lifting lever 223, and the driving motor 222 can drive the presser foot lifting lever 223 to rotate through the cam 224. When the driving motor 222 of the present embodiment is operated, the hook 23 connected to the presser foot lifting lever 223 can be moved downward by using the principle of a lever, so as to achieve the function of saving labor, and the driving motor 222 of the present embodiment can be a stepping motor with small power.

Further, a pulley 225 is rotatably connected to the presser foot lifting lever 223, the cam 224 abuts against the pulley 225, and the cam surface of the cam 224 and the roller surface of the pulley 225 are in abutting fit, so that the cam 224 drives the presser foot lifting lever 223 to rotate around the axis screw 101, and thus the noise reduction effect is achieved.

In the present embodiment, the pulley 225 is provided inside one end of the presser foot lifting lever 223 and is rotatably connected to the presser foot lifting lever 223 by a stopper pin 102.

As can be seen from the above, in the present embodiment, the motor driving assembly for driving the presser foot driving lever 21 to rotate is integrally made into a modular structure, and specifically, the motor fixing seat 221 on the motor driving assembly is detachably fixed on the overedger body 10 by a screw, so as to realize the assembly of the motor driving assembly on the overedger body 10, and the assembly has the function of being convenient for production and installation. It should be noted that the length of the presser foot driving lever 21 may be specifically set according to the use requirement, so that the presser foot driving lever 21 is connected with the presser foot lifting lever 223 through the hook 23.

To sum up, the utility model provides a lift presser foot mechanism and hemming machine thereof uses the motor as the power supply for the drive presser foot actuating lever rotates, realizes the automatic drive to this hemming machine presser foot with this to improve the stability of this hemming machine to the automatic drive of presser foot, is suitable for this hemming machine long time and high frequency work; meanwhile, the presser foot lifting mechanism generates less noise during integral working, has the function of noise reduction, and further meets the use requirements of people on the overedger.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. A lift presser foot mechanism which characterized in that: the clamp comprises a clamp foot driving rod and a motor driving component used for driving the clamp foot driving rod to rotate, wherein a hook is connected between a driving part of the motor driving component and the clamp foot driving rod, and the motor driving component can drive the clamp foot driving rod to rotate through the hook.

2. The presser foot lifting mechanism of claim 1, wherein: the hook is vertically arranged relative to the presser foot driving rod.

3. The presser foot lifting mechanism of claim 2, wherein: the two ends of the hook are provided with hook parts which are respectively defined as a first hook part and a second hook part, the first hook part of the hook hooks the presser foot driving rod, and the second hook part hooks the driving part of the motor driving component.

4. The presser foot lifting mechanism of claim 1, wherein: the motor driving assembly comprises a motor fixing seat and a driving motor arranged on the motor fixing seat; the driving part is a pressure foot lifting lever, one end of the pressure foot lifting lever is rotatably arranged on the motor fixing seat through an axis position screw, and the driving motor can drive the pressure foot lifting lever to rotate on the motor fixing seat around the axis position screw.

5. The presser foot lifting mechanism of claim 4, wherein: the rotary shaft part of the driving motor is provided with a cam, the cam is abutted against the presser foot lifting lever, and the driving motor can drive the presser foot lifting lever to rotate through the cam.

6. The presser foot lifting mechanism of claim 5, wherein: the pressure foot lifting lever is rotatably connected with a pulley, and the roller surface of the pulley is abutted and matched with the cam.

7. The presser foot lifting mechanism of claim 6, wherein: the pulley is embedded on the end part of one side of the pressure foot lifting lever, which is far away from the shaft position screw, and is limited by a pin.

8. The presser foot lifting mechanism of claim 4, wherein: the driving motor is a stepping motor.

9. The utility model provides a hemming machine, includes the hemming machine body, and locates lift presser foot mechanism on the hemming machine body, its characterized in that: the presser foot lifting mechanism is as claimed in any one of claims 1-8.

10. The overlock machine of claim 9, wherein: the motor driving mechanism is detachably fixed on the overedger body through screws.

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