CN214465908U

CN214465908U - Cam corner adjusting mechanism

Info

Publication number: CN214465908U
Application number: CN202120017501.6U
Authority: CN
Inventors: 潘小强; 付和平; 靳松
Original assignee: Xian Typical Industry Co Ltd
Current assignee: Xian Typical Industry Co Ltd
Priority date: 2021-01-06
Filing date: 2021-01-06
Publication date: 2021-10-22
Anticipated expiration: 2031-01-06

Abstract

The utility model relates to a mechanical transmission field, concretely relates to cam adjustment corner mechanism. The motor shaft drives the cam to rotate, so that the rotating shaft connected with the crank rotates by a corresponding angle, the cost is low, and the installation and debugging are easy. The technical proposal of the utility model comprises a crank, a stepping motor, a motor mounting plate and a rotating shaft; the motor mounting plate is a U-shaped plate, a cam is arranged in the middle of the motor mounting plate, and a shaft of the stepping motor penetrates through the cam and two side plates of the motor mounting plate; the crank be one side width narrow U template on one side, be provided with waist type groove on the wide sideboard, the one end of pivot sets firmly in waist type groove, is provided with bearing I through axle position screw in two relative limits of crank, bearing I sets up with the cam is tangent, has set firmly spacing tight circle in the pivot, the cover is equipped with the reset spring on the spacing tight circle, the one end of reset spring sets up in the lower terminal surface of motor mounting panel, the other end sets up in articulate lower terminal surface.

Description

Cam corner adjusting mechanism

Technical Field

The utility model relates to a mechanical transmission field, concretely relates to cam adjustment corner mechanism.

Background

At present, the existing cam corner adjusting mechanism on the market is complex in structure, high in failure rate and inconvenient to install.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve the structure complicacy that prior art exists, problem that the fault rate is high provides a cam adjustment corner mechanism, and it drives the cam by the motor shaft and rotates for corresponding angle has been rotated through the pivot that links to each other with the crank, and is with low costs, easily installation and debugging.

For solving the problems existing in the prior art, the technical scheme of the utility model is that: a cam corner adjusting mechanism is characterized in that: comprises a crank, a stepping motor, a motor mounting plate and a rotating shaft; the motor mounting plate is a U-shaped plate, a cam is arranged in the middle of the motor mounting plate, and a shaft of the stepping motor penetrates through the cam and two side plates of the motor mounting plate; the crank be one side width narrow U template on one side, be provided with waist type groove on the wide sideboard, the one end of pivot sets firmly in waist type groove, is provided with bearing I through axle position screw in two relative limits of crank, bearing I sets up with the cam is tangent, has set firmly spacing tight circle in the pivot, the cover is equipped with the reset spring on the spacing tight circle, the one end of reset spring sets up in the lower terminal surface of motor mounting panel, the other end sets up in articulate lower terminal surface.

Furthermore, the limit clamping ring is fastened on the rotating shaft through a limit screw.

Further, the reset spring is arranged between the limit screw and the crank.

And further, a second bearing is respectively arranged between the shaft of the stepping motor and the two side plates of the motor mounting plate.

Compared with the prior art, the utility model has the advantages as follows:

1) the utility model directly drives the cam to press the bearing on the crank through the motor shaft to rotate the shaft, and the crank is reset through the elasticity of the reset spring on the rotating shaft, and the bearing ensures that the cam is well stressed in the rotating process;

2) the utility model structurally fixes most parts on the mounting plate of the stepping motor, is easy to be assembled and disassembled integrally, and can directly punch holes on the main mechanism body to assemble the cam corner adjusting mechanism;

3) the utility model adopts the stepping motor to control the rotation, the stepping motor has simple structure, convenient use and no accumulated error, and can work only by pulse signals;

4) the utility model is provided with the tight ring on the rotating shaft, and the limit pin is arranged on the tight ring to play the limiting role, so as to prevent the cam from continuing to rotate in the positive direction when the cam rotates to the position with the largest radius;

5) the utility model discloses simple structure, low in production cost, easy installation and debugging need not unnecessary part.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is an exploded schematic view of the present invention;

FIG. 3 is a schematic view of the crank of the present invention;

FIG. 4 is a schematic view of the rotating shaft of the present invention;

fig. 5 is a schematic structural view of the motor mounting plate of the present invention;

in the figure: 1. A crank; 2. An axial screw; 3. a first bearing; 4. a cam; 5. a stepping motor; 6. a motor mounting plate; 7. a second bearing; 8. a reset spring; 9. a position-limiting tight ring; 10. a limit screw; 11. a rotating shaft; 12. a main body.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The present embodiment provides a cam rotation angle adjusting mechanism, as shown in fig. 1, fig. 2 and fig. 4, including a crank 1, a stepping motor 5, a motor mounting plate 6, and a rotating shaft 11; the motor mounting plate 6 is a U-shaped plate, as shown in fig. 5, a cam 4 is arranged in the middle of the motor mounting plate, the cam 4 is fastened on a motor shaft through two screws with a circumferential included angle of 70 degrees, the stepping motor 5 is driven to move in the same speed and direction, a shaft of the stepping motor 5 penetrates through the cam 4 and two side plates of the motor mounting plate 6, and a second bearing 7 is respectively arranged between the shaft of the stepping motor 5 and the two side plates of the motor mounting plate 6;

crank 1 be one side width narrow U template on one side, as shown in fig. 3, be provided with waist type groove on the wide sideboard, the one end of pivot 11 sets firmly in waist type groove, be provided with bearing 3 through axle position screw 2 in two relative limits of crank 1, bearing 3 sets up with cam 4 is tangent, set firmly spacing tighrening circle 9 through stop screw 10 on the pivot 11, the cover is equipped with reset spring 8 on spacing tighrening circle 9, reset spring 8 sets up between stop screw 10 and crank 1, the one end of reset spring 8 sets up in the lower terminal surface of motor mounting panel 6, the other end sets up in the lower terminal surface of crank 1.

The other end of the rotating shaft 11 is arranged on the main mechanism body 12, and one side plate of the motor mounting plate 6 is connected with the main mechanism body 12.

The main mechanism body 12 may be a sewing machine or another mechanical motion mechanism.

The utility model discloses a working process: the cam 4 is tangent to the bearing 3, the stepping motor 5 drives the cam 4 to rotate forward for a certain angle, and the crank 1 drives the rotating shaft 11 to deflect for a corresponding angle by means of the elastic force of the reset spring 8; when the stepping motor 5 drives the cam 4 to rotate reversely by a certain angle, the cam 4 presses the bearing 3 to rotate, so that the crank 1 drives the rotating shaft 11 to deflect by a corresponding angle.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.

Claims

1. A cam corner adjusting mechanism is characterized in that: comprises a crank (1), a stepping motor (5), a motor mounting plate (6) and a rotating shaft (11); the motor mounting plate (6) is a U-shaped plate, the middle part of the motor mounting plate is provided with a cam (4), and the shaft of the stepping motor (5) penetrates through the cam (4) and two side plates of the motor mounting plate (6); crank (1) be one side wide narrow U template on one side, be provided with waist type groove on the wide sideboard, the one end of pivot (11) sets firmly in waist type groove, be provided with bearing (3) through axle position screw (2) in two relative limits of crank (1), bearing (3) and cam (4) are tangent to be set up, set firmly spacing tight circle (9) on pivot (11), the cover is equipped with reset spring (8) on spacing tight circle (9), the one end of reset spring (8) sets up in the lower terminal surface of motor mounting panel (6), the other end sets up in the lower terminal surface of crank (1).

2. A cam adjustment rotation angle mechanism according to claim 1, wherein: the limiting tight ring (9) is fastened on the rotating shaft (11) through a limiting screw (10).

3. A cam adjustment rotation angle mechanism according to claim 1 or 2, wherein: the reset spring (8) is arranged between the limit screw (10) and the crank (1).

4. A cam adjustment rotation angle mechanism according to claim 3, wherein: and a second bearing (7) is respectively arranged between the shaft of the stepping motor (5) and the two side plates of the motor mounting plate (6).