CN216881183U

CN216881183U - Lead screw rotation-proof structure

Info

Publication number: CN216881183U
Application number: CN202220140585.7U
Authority: CN
Inventors: 傅强; 张明峰; 郑永刚; 陶春宇
Original assignee: Nanjing Longbo Intelligent Technology Co ltd
Current assignee: Nanjing Longbo Intelligent Technology Co ltd
Priority date: 2022-01-19
Filing date: 2022-01-19
Publication date: 2022-07-05
Anticipated expiration: 2032-01-19

Abstract

The utility model belongs to the field of motor accessories, and particularly relates to a screw rod anti-rotation structure, which aims at solving the problem that when an existing pure electric servo bending machine drives a nut to rotate, a screw rod is easy to rotate, so that the moving efficiency and stability of the screw rod are reduced. According to the pure electric servo bending machine, when the nut is driven to rotate, the screw rod cannot rotate, and the moving efficiency and the stability of the screw rod are improved.

Description

Lead screw rotation-proof structure

Technical Field

The utility model relates to the technical field of motor accessories, in particular to a screw rod anti-rotation structure.

Background

The method for bending the plate generally adopts a bending machine to process the plate, a pure electric servo bending machine is generally used for bending in the market at present, when the plate is driven to be mounted on a die, the screw rod needs to be driven to move up and down to drive the die to move, however, when the nut is driven to rotate by the existing pure electric servo bending machine, the screw rod is easy to follow, and therefore the moving efficiency and the stability of the screw rod are reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art and provides a screw rod anti-rotation structure.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a screw rod anti-rotation structure comprises a rack, a connecting seat, a nut, a screw rod, an anti-rotation block, a rotation-prevention block, a follow-up semicircular pin, a rotation pin and a sliding seat, wherein the connecting seat is fixedly arranged on one side of the rack, a through hole is formed in the connecting seat, the nut is rotatably arranged in the through hole, the screw rod is in threaded connection with the nut, a first driving wheel is fixedly arranged at the top of the nut, a servo motor is fixedly arranged on one side of the rack, a second driving wheel is fixedly connected to an output shaft of the servo motor, the second driving wheel and the first driving wheel are in transmission connection with the same synchronous belt, the rotation-prevention block is arranged at the bottom end of the screw rod, the rotation-prevention block is arranged at the bottom of the anti-rotation block, the follow-up semicircular pin is arranged on the rotation block, the rotation pin is arranged on the follow-up semicircular pin, and the sliding seat is connected with the rotation pin, the bottom fixed mounting of sliding seat has the mould, fixed mounting has the bed die in the frame, the bed die sets up the bottom at last mould.

Specifically, a first thread groove is formed in the bottom end of the screw rod, a groove is formed in the bottom of the anti-rotation block, a threaded rod is rotatably mounted in the groove, and threads of the threaded rod are mounted in the first thread groove.

Specifically, a connecting groove is formed in the transfer block, a swing screw is installed in the connecting groove, a threaded hole is formed in one side of the follow-up semicircular pin, the swing screw is in threaded connection with the threaded hole, and a disc spring group is sleeved on the swing screw.

Specifically, a second thread groove is formed in the rotating pin, and the swing screw is in threaded connection with the second thread groove.

Specifically, a bearing is fixedly arranged in the through hole, and the nut is fixedly connected to an inner ring of the bearing.

Compared with the prior art, the utility model has the beneficial effects that:

(1) according to the screw rod anti-rotation structure, the follow-up semicircular pin can be tightly attached to the arc-shaped surface processed on the sliding seat under the pulling force of the swing screw, so that the screw rod is prevented from rotating along with the rotation of the screw rod when the nut rotates under heavy load, and the screw rod is forced to only move up and down.

(2) According to the screw rod anti-rotation structure, the screw rod cannot rotate with the screw rod, so that the moving efficiency and the stability of the screw rod are improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be understood that the drawings in the following description are illustrative only, and that the structures, proportions, sizes, and other elements shown in the drawings are incorporated herein by reference in their entirety for all purposes in the present disclosure, which are not intended to limit the scope of the utility model, which is to be construed as limiting the utility model in any manner, and not necessarily for all purposes, except as technically essential.

FIG. 1 is a schematic front view of an anti-rotation structure of a lead screw according to the present invention;

FIG. 2 is a schematic structural diagram of a connecting seat, a first driving wheel, an anti-rotation block, a rotation-preventing block and a sliding seat of an anti-rotation structure of a screw rod provided by the utility model;

fig. 3 is a schematic structural view of a part a of an anti-rotation structure of a screw rod according to the present invention.

In the figure: 1. a frame; 2. a connecting seat; 3. a nut; 4. a first transmission wheel; 5. a servo motor; 6. a second driving wheel; 7. a synchronous belt; 8. a screw rod; 9. a rotation prevention block; 10. a threaded rod; 11. a transfer block; 12. swinging the screw; 13. a disc spring set; 14. a follower semicircular pin; 15. rotating the pin; 16. a sliding seat; 17. an upper die; 18. and (5) a lower die.

Detailed Description

The present invention is described in terms of particular embodiments, other advantages and features of the utility model will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the utility model and that it is not intended to limit the utility model to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example one

Referring to fig. 1-3, a screw rod rotation-preventing structure comprises a frame 1, a connecting seat 2, a nut 3, a screw rod 8, a rotation-preventing block 9, a switching block 11, a follower semicircular pin 14, a switching pin 15 and a sliding seat 16, wherein the connecting seat 2 is fixedly installed at one side of the frame 1, a through hole is formed in the connecting seat 2, the nut 3 is rotatably installed in the through hole, the screw rod 8 is arranged in the through hole, the screw rod 8 is in threaded connection with the nut 3, a driving wheel I4 is fixedly installed at the top of the nut 3, a servo motor 5 is fixedly installed at one side of the frame 1, a driving wheel II 6 is fixedly connected to an output shaft of the servo motor 5, the driving wheel II 6 and the driving wheel I4 are in transmission connection with a same synchronous belt 7, the rotation-preventing block 9 is installed at the bottom end of the screw rod 8, the switching block 11 is installed at the bottom of the rotation-preventing block 9, the follower semicircular pin 14 is installed on the switching block 11, the rotating pin 15 is installed on the follow-up semicircular pin 14, the sliding seat 16 is connected with the rotating pin 15, an upper die is fixedly installed at the bottom of the sliding seat 16, a lower die 18 is fixedly installed on the rack 1, and the lower die 18 is arranged at the bottom of the upper die 17.

In this embodiment, a first thread groove is formed in the bottom end of the screw rod 8, a groove is formed in the bottom of the rotation prevention block 9, a threaded rod 10 is rotatably mounted in the groove, and the threaded rod 10 is threadedly mounted in the first thread groove.

In this embodiment, a connection groove is formed in the transfer block 11, a swing screw 12 is installed in the connection groove, a threaded hole is formed in one side of the follower semicircular pin 14, the swing screw 12 is in threaded connection with the threaded hole, and a disc spring group 13 is sleeved on the swing screw 12.

In this embodiment, the rotating pin 15 is provided with a second threaded groove, and the swing screw 12 is screwed in the second threaded groove.

In the embodiment, the rotation prevention block 9 is clamped at the lower end of the screw rod 8, the rotation prevention block 9 is installed on the rotation connection block 11, the rotation connection block 11 is installed with the following semicircular pin 14 through a clamping platform, the following semicircular pin 14 is connected with the sliding seat 16 through a cylindrical arc surface, the swing screw 12 arranged in the rotation connection block 11 penetrates through the following semicircular pin 14 through the disc spring group 13 to be connected with the rotating pin 15 inserted into the sliding seat 16, the following semicircular pin 14 can be tightly attached to the arc surface processed on the sliding seat 16 under the tension of the swing screw 12, so that the rotation following of the screw rod 8 is prevented when the nut 3 rotates under heavy load, the screw rod 8 is forced to only do up-and-down movement, the rotation connection block 11 with the built-in disc spring group 13, the following semicircular pin 14 and the rotating pin 15 hinged in the sliding block can realize the possibility of the mechanical inclination of the sliding seat 16, and the disc spring group 13 in the rotation connection block 11 swings around the plane on the disc spring group 13 in a circular shape, at this time, the rotating pin 15 slightly rotates in the hinge hole of the sliding seat 16, and the swing screw 12 slightly swings in the through hole.

Compared with the prior art, the utility model has the technical progress that: according to the pure electric servo bending machine, when the nut 3 is driven to rotate, the screw rod 8 cannot rotate, and the moving efficiency and the stability of the screw rod 8 are improved.

Example two

Referring to fig. 1, the difference between the second embodiment and the first embodiment is that a bearing is fixedly installed in the through hole, and a nut 3 is fixedly connected to an inner ring of the bearing.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. A screw rod anti-rotation structure is characterized by comprising a rack (1), a connecting seat (2), a nut (3), a screw rod (8), an anti-rotation block (9), a rotation block (11), a follow-up semicircular pin (14), a rotation pin (15) and a sliding seat (16), wherein the connecting seat (2) is fixedly installed on one side of the rack (1), a through hole is formed in the connecting seat (2), the nut (3) is rotatably installed in the through hole, the screw rod (8) is arranged in the through hole, the screw rod (8) is in threaded connection with the nut (3), a first transmission wheel (4) is fixedly installed at the top of the nut (3), a servo motor (5) is fixedly installed on one side of the rack (1), a second transmission wheel (6) is fixedly connected to an output shaft of the servo motor (5), and the second transmission wheel (6) and the first transmission wheel (4) are in transmission connection with a same synchronous belt (7), prevent changeing the bottom at lead screw (8) in piece (9), install in the bottom of preventing changeing piece (9) in piece (11) of changeing, install on piece (11) of changeing in follow-up semicircle round pin (14), change round pin (15) and install on follow-up semicircle round pin (14), sliding seat (16) are connected with commentaries on classics round pin (15), the bottom fixed mounting of sliding seat (16) has the mould, fixed mounting has bed die (18) on frame (1), bed die (18) set up the bottom in last mould (17).

2. The screw rod anti-rotation structure as claimed in claim 1, wherein the bottom end of the screw rod (8) is provided with a first threaded groove, the bottom of the anti-rotation block (9) is provided with a groove, a threaded rod (10) is rotatably mounted in the groove, and the threaded rod (10) is threadedly mounted in the first threaded groove.

3. The screw rod rotation-proof structure according to claim 1, characterized in that the connecting block (11) is provided with a connecting groove, a swing screw (12) is installed in the connecting groove, one side of the follower semicircular pin (14) is provided with a threaded hole, the swing screw (12) is screwed in the threaded hole, and the swing screw (12) is sleeved with a disc spring set (13).

4. The screw rod anti-rotation structure according to claim 3, wherein a second threaded groove is formed in the rotating pin (15), and the swing screw (12) is in threaded connection with the second threaded groove.

5. The screw rod anti-rotation structure according to claim 1, wherein a bearing is fixedly installed in the through hole, and the nut (3) is fixedly connected to an inner ring of the bearing.