CN216016658U

CN216016658U - Worm fastening mechanism

Info

Publication number: CN216016658U
Application number: CN202121196496.6U
Authority: CN
Inventors: 胡家瑞; 周华国; 廖建勇
Original assignee: Shenzhen Honest Mechatronic Equipment Co Ltd
Current assignee: Shenzhen Honest Mechatronic Equipment Co Ltd
Priority date: 2021-05-31
Filing date: 2021-05-31
Publication date: 2022-03-11
Anticipated expiration: 2031-05-31

Abstract

The utility model discloses a worm fastening mechanism, which relates to the technical field of worm assembly, and comprises a pre-tightening assembly and a fastening assembly, wherein the pre-tightening assembly comprises a first bracket, a first downward-pressing driving device and a first pre-tightening driving device, wherein the first pre-tightening driving device is used for pulling a worm to pre-tighten the worm on a rotor shaft; the first pre-tensioning driving device is arranged on the first bracket, and the first downward pressing driving device is arranged on the first pre-tensioning driving device; the fastening assembly comprises a second support, a second pressing driving device and a second pulling driving device, the second pulling driving device is mounted on the second support, and the second pressing driving device is mounted on the second pulling driving device; through carrying out twice axial pulling around pretension subassembly and fastening components to the worm, with worm fastening installation in the rotor axle head, improved the steadiness of worm installation, make the overall structure of product more firm, the operation is more stable.

Description

Worm fastening mechanism

Technical Field

The utility model relates to the technical field of motor assembly, in particular to a worm fastening mechanism.

Background

The motor is an electromagnetic device for realizing electric energy conversion or transmission according to the electromagnetic induction law, the rotor is one of important parts, the performance of the rotor directly influences the performance of the whole motor, the rotor shaft is applied to various motors, and a worm needs to be tightly installed on the rotor shaft in the process of producing the rotor shaft; most of the existing worm mechanism mechanisms can not be operated fully automatically at present, manual assistance is needed, and the labor cost is increased; meanwhile, the existing worm mechanism has the technical problems of poor assembly precision, low assembly efficiency and low product stability, the worm cannot be accurately fastened and installed at the installation position on the rotor shaft, and the existing worm fastening mechanism can cause the technical problem of pulling damage to the worm in the fastening and installation process, so that the defective rate is increased, and the sustainable development of enterprises is seriously influenced; therefore, in view of the current situation, it is urgently needed to develop a worm fastening mechanism to meet the requirement of practical use.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention is directed to the defects in the prior art, and a primary object of the present invention is to provide a worm fastening mechanism, in which a pre-tightening component and a fastening component are used to axially pull a worm twice in a front-back direction, so as to tightly mount the worm at a rotor shaft end, thereby improving the mounting stability of the worm, and making the overall structure of the product more firm and the operation more stable.

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

a worm fastening mechanism comprises a pre-tightening assembly and a fastening assembly, wherein the pre-tightening assembly is used for pre-tightening a worm on a rotor, the fastening assembly is used for pulling the worm to a knurled part of a rotor shaft, and the pre-tightening assembly and the fastening assembly are arranged side by side; the pre-tightening assembly comprises a first bracket, a first downward pressing driving device and a first pre-tightening driving device, wherein the first downward pressing driving device is used for being embedded into the worm and applying downward pressure to the worm, and the first pre-tightening driving device is used for pulling the worm to pre-tighten the worm on the rotor shaft; the first pre-tensioning driving device is arranged on the first bracket, and the first downward pressing driving device is arranged on the first pre-tensioning driving device; the fastening assembly comprises a second bracket, a second pressing driving device used for clamping the worm and applying downward pressure to the worm, and a second pulling driving device used for pulling the worm to completely fasten the worm on the rotor shaft, wherein the second pulling driving device is arranged on the second bracket, and the second pressing driving device is arranged on the second pulling driving device.

As a preferred embodiment: the first pre-tensioning driving device comprises a first pre-tensioning driving cylinder and a first support used for supporting the end part of the rotor worm, the first pre-tensioning driving cylinder is longitudinally arranged on a first support, the first support is slidably arranged on the first support, the shaft end of the first pre-tensioning driving cylinder is connected with the first support, and the first pre-tensioning driving cylinder drives the first support to move on the first support; the first downward pressing driving device comprises a first downward pressing driving cylinder and a first sliding block; the first downward pressing driving cylinder is vertically arranged on the first support, the first sliding block is slidably positioned on the first support, the shaft end of the first downward pressing driving cylinder is connected with the first sliding block, and the first downward pressing driving cylinder drives the first sliding block to vertically move on the first support; the lower surface of the first sliding block is provided with a rubber pulling block which is matched with the worm on the first support; the second pulling driving device comprises a second pulling driving cylinder and a second support used for supporting the end part of the rotor worm, the second pulling driving cylinder is longitudinally arranged on a second support, the second support is slidably arranged on the second support, the shaft end of the second pulling driving cylinder is connected with the second support, and the second pulling driving cylinder drives the second support to move on the second support; the second downward pressing driving device comprises a second downward pressing driving air cylinder and a second sliding block, the second downward pressing driving air cylinder is vertically installed on the second support, the second sliding block is slidably located on the second support, the shaft end of the second downward pressing driving air cylinder is connected with the second sliding block, and the second downward pressing driving air cylinder drives the second sliding block to vertically move on the second support; the second slide corresponds to the second seat to mount the worm screw completely and tightly on the rotor shaft.

As a preferred embodiment: the lower end of the second sliding block is provided with a pulling plate for pulling the worm, a groove is formed in the pulling plate, the pulling plate abuts against the end of the worm to pull the worm to a knurled part of the rotor shaft, the second downward pressing driving cylinder drives the groove in the second sliding block to move downwards and be clamped between the rotor and the worm, the second pulling driving cylinder drives the second support to move backwards, and the second support moves backwards to drive the groove in the second sliding block to pull the worm to move backwards so as to fasten the worm on the rotor.

As a preferred embodiment: the rubber pulling block is provided with a plurality of embedding grooves for embedding the worm, the embedding grooves correspond to the thread walls of the worm, and the thread walls of the worm are embedded into the embedding grooves of the rubber pulling block.

As a preferred embodiment: the first support and the second support are both provided with support blocks for supporting the worm, the upper surfaces of the support blocks are provided with support grooves for placing the worm, the rubber pulling blocks can be vertically movably located above the support grooves of the first support, and the grooves of the second sliding blocks can be vertically movably located above the support grooves of the second support.

As a preferred embodiment: the first bracket is provided with a first proximity sensor for sensing the arrival of the first support; and a second proximity sensor used for sensing the arrival of the second support is arranged on the second support.

As a preferred embodiment: a first limiting rod used for limiting the backward moving position of the first support is arranged beside the first proximity sensor, the first pre-tensioning driving cylinder drives the first support to move backward, and the first support moves backward and abuts against the limiting rod; and a second limiting rod used for limiting the backward moving position of the second support is arranged beside the second proximity sensor, the second pulling driving cylinder drives the second support to move backward, and the second support moves backward and abuts against the limiting rod.

As a preferred embodiment: the first sliding block comprises a first vertical sliding part and a first transverse connecting part, the first vertical sliding part is slidably positioned on the first support, the shaft end of the first downward pressing driving cylinder is connected with the first transverse connecting part, and the rubber pulling block is arranged on the lower surface of the first transverse connecting part; the second sliding block comprises a second vertical sliding portion and a second transverse connecting portion, the second vertical sliding portion is located on the second support in a sliding mode, the shaft end of the second pressing driving cylinder is connected with the second transverse connecting portion, and the groove is formed in the lower surface of the second transverse connecting portion.

Compared with the prior art, the worm mounting device has the obvious advantages and beneficial effects, and particularly, according to the technical scheme, the worm is tightly mounted at the shaft end of the rotor by axially pulling the worm twice back and forth through the pre-tightening assembly and the fastening assembly, so that the mounting stability of the worm is improved, the integral structure of a product is firmer, and the operation is more stable; the rubber pulling block is embedded with the worm, the worm is pre-fastened on the rotor shaft, the rubber pulling block has certain elasticity, the phenomenon that the worm is damaged in the process of pulling the worm is avoided, the defective rate is reduced, and the assembling efficiency is improved.

To more clearly illustrate the structural features and effects of the present invention, the following detailed description is given with reference to the accompanying drawings and specific embodiments.

Drawings

FIG. 1 is a first perspective view of a worm fastening mechanism of the present invention;

FIG. 2 is a perspective view of the worm fastening mechanism of the present invention from a second perspective;

FIG. 3 is a third perspective view of the worm fastening mechanism of the present invention;

fig. 4 is a perspective view of a fourth perspective of the worm fastening mechanism of the present invention.

The attached drawings indicate the following:

in the figure: 10. a worm fastening mechanism; 11. a pre-tightening assembly; 12. a first bracket; 121. a first proximity sensor; 122. a first limit rod; 13. a first pre-tensioning drive; 131. a first pre-tensioning driving cylinder; 132. a first support; 133. a support block; 134. a support groove; 14. a first push-down driving device; 141. a first downward pressure driving cylinder; 142. a first slider; 143. a first vertical sliding portion; 144. a first transverse connecting portion; 145. a rubber pulling block; 15. a fastening assembly; 16. a second bracket; 161. a second proximity sensor; 162. a second limiting rod; 17. a second pulling drive; 171. a second pulling driving cylinder; 172. a second support; 18. a second push-down driving device; 181. a second push-down driving cylinder; 182. a second slider; 183. pulling a plate; 184. a groove; 185. a second vertical sliding portion; 186. a second transverse connecting portion.

Detailed Description

As shown in fig. 1 to 4, the utility model relates to a worm fastening mechanism 10, which comprises a pre-tightening assembly 11 for pre-tightening a worm on a rotor and a fastening assembly 15 for pulling the worm to a knurled part of a rotor shaft, wherein the pre-tightening assembly 11 and the fastening assembly 15 are arranged side by side; the pretensioning assembly 11 comprises a first bracket 12, a first downward pressure drive 14 for embedding in and applying downward pressure to the worm, and a first pretensioning drive 13 for pulling the worm to pretension the worm on the rotor shaft; the first pre-tensioning drive 13 is mounted on the first carriage 12, the first push-down drive 14 is mounted on the first pre-tensioning drive 13; the fastening assembly 15 comprises a second bracket 16, a second push-down drive 18 for holding the worm and applying a downward pressure on the worm, and a second pull drive 17 for pulling the worm to completely fasten the worm to the rotor shaft, the second pull drive 17 being mounted on the second bracket 16, the second push-down drive 18 being mounted on the second pull drive 17.

The first pre-tensioning driving device 13 comprises a first pre-tensioning driving cylinder 131 and a first support 132 for supporting the end of the rotor worm, the first pre-tensioning driving cylinder 131 is longitudinally mounted on the first bracket 12, the first support 132 is slidably located on the first bracket 12, the shaft end of the first pre-tensioning driving cylinder 131 is connected with the first support 132, and the first pre-tensioning driving cylinder 131 drives the first support 132 to move on the first bracket 12; the first push-down driving means 14 includes a first push-down driving cylinder 141 and a first slider 142; the first downward-pressing driving cylinder 141 is vertically installed on the first support 132, the first slider 142 is slidably located on the first support 132, the shaft end of the first downward-pressing driving cylinder 141 is connected with the first slider 142, and the first downward-pressing driving cylinder 141 drives the first slider 142 to vertically move on the first support 132; the lower surface of the first sliding block 142 is provided with a rubber pulling block 145, and the rubber pulling block 145 is matched with the worm on the first support 132; the second pulling driving device 17 comprises a second pulling driving cylinder 171 and a second support 172 for supporting the end of the rotor worm, the second pulling driving cylinder 171 is longitudinally mounted on the second bracket 16, the second support 172 is slidably located on the second bracket 16, the shaft end of the second pulling driving cylinder 171 is connected with the second support 172, and the second pulling driving cylinder 171 drives the second support 172 to move on the second bracket 16; the second downward pressing driving device 18 comprises a second downward pressing driving cylinder 181 and a second sliding block 182, the second downward pressing driving cylinder 181 is vertically mounted on the second support 172, the second sliding block 182 is slidably located on the second support 172, the shaft end of the second downward pressing driving cylinder 181 is connected with the second sliding block 182, and the second downward pressing driving cylinder 181 drives the second sliding block 182 to vertically move on the second support 172; the second slider 182 corresponds to the second seat 172 to mount the worm screw completely fastened to the rotor shaft; the lower end of the second sliding block 182 is provided with a pulling plate 183 for pulling the worm, the pulling plate 183 is provided with a groove 184, the pulling plate 183 abuts against the end of the worm to pull the worm to the knurled region of the rotor shaft, the second downward pressing driving cylinder 181 drives the groove 184 on the second sliding block 182 to move downwards and be clamped between the rotor and the worm, the second pulling driving cylinder 171 drives the second support 172 to move backwards, and the second support 172 moves backwards to drive the groove 184 on the second sliding block 182 to pull the worm backwards so as to fasten the worm on the rotor; specifically, a first downward pressing driving cylinder 141 of the pre-tightening assembly 11 drives a first sliding block 142 to descend, a rubber pull block 145 on the first sliding block 142 is matched with a worm on a first sliding seat, the first downward pressing driving cylinder 141 drives the rubber pull block 145 on the first sliding block 142 to press downward to be attached to the worm, the first pre-pressing driving cylinder 131 drives the first sliding seat to move backward, and the first sliding seat moves backward to drive the rubber pull block 145 on the first sliding block 142 and the worm to move backward so as to pull out a certain interval between the end of a rotor and the worm; the synchronous material moving mechanism A50 moves the rotor worm to the right, the shaft end of the rotor is supported on the second slide carriage, the second downward pressing driving cylinder 181 of the fastening assembly 15 drives the groove 184 on the second slide block 182 to move downward and be clamped between the rotor and the worm, the second pulling driving cylinder 171 drives the second slide carriage to move backward, the second slide carriage moves backward and drives the groove 184 on the second slide block 182 to pull the worm to move backward so as to fasten the worm on the rotor; the worm is axially pulled back and forth twice through the pre-tightening assembly 11 and the fastening assembly 15, and the worm is tightly mounted at the end of the rotor shaft, so that the mounting stability of the worm is improved, the integral structure of a product is firmer, and the operation is more stable; the rubber pulling block 145 is embedded with the worm, the worm is pre-fastened on the rotor shaft, the rubber pulling block 145 has certain elasticity, the phenomenon that the worm is damaged in the process of pulling the worm is avoided, the defective rate is reduced, and the assembling efficiency is improved.

The rubber block 145 is provided with a plurality of embedding grooves (not shown) for embedding the worm, the embedding grooves correspond to the thread walls of the worm, and the thread walls of the worm are embedded in the embedding grooves of the rubber block 145; thus, the rubber pulling block 145 and the worm are embedded more tightly, and the pulling effect of the rubber pulling block 145 on the worm is enhanced

The first support 132 and the second support 172 are both provided with a support block 133 for supporting the worm, the upper surface of the support block 133 is provided with a support groove 134 for placing the worm, the rubber pull block 145 is vertically movably positioned above the support groove 134 of the first support 132, and the groove 184 of the second slider 182 is vertically movably positioned above the support groove 134 of the second support 172; the position of the worm on the second seat 172 is further defined by the support groove 134, preventing the worm from being displaced.

The first bracket 12 is provided with a first proximity sensor 121 for sensing the arrival of the first support 132; the second bracket 16 is provided with a second proximity sensor 161 for sensing the arrival of the second support 172; a microprocessor (as a control module, a single-chip processor, not shown) is also provided in the mechanism and can collect the approach signals of the first support 132 and the second support 172 (signals sensed by the first proximity sensor 121 and the second proximity sensor 161, not shown)

A first limiting rod 122 for limiting the backward moving position of the first support 132 is arranged beside the first proximity sensor 121, the first pre-tensioning driving cylinder 131 drives the first support 132 to move backward, and the first support 132 moves backward to abut against the limiting rod; a second limit rod 162 for limiting the backward movement position of the second support 172 is arranged beside the second proximity sensor 161, the second pulling driving cylinder 171 drives the second support 172 to move backward, and the second support 172 moves backward and abuts against the limit rod; the first limit stop 122 defines the maximum position of the backward movement of the first abutment 132, pre-tightening the worm on the rotor shaft; the second stopper 162 limits the maximum position of the second support 172 moving backward, and fastens the worm on the rotor shaft, thereby improving the accuracy of the pulling position, enhancing the worm fastening effect, and reducing the defective rate.

The first sliding block 142 includes a first vertical sliding portion 143 and a first horizontal connecting portion 144, the first vertical sliding portion 143 is slidably located on the first supporting seat 132, the shaft end of the first downward-pressing driving cylinder 141 is connected to the first horizontal connecting portion 144, and the rubber pulling block 145 is disposed on the lower surface of the first horizontal connecting portion 144; the second slider 182 includes a second vertical sliding portion 185 and a second horizontal connecting portion 186, the second vertical sliding portion 185 is slidably located on the second support 172, the shaft end of the second push-down driving cylinder 181 is connected to the second horizontal connecting portion 186, and the groove 184 is disposed on the lower surface of the second horizontal connecting portion 186; therefore, the structure is more compact, and the occupied area of the field is reduced.

The use method and the principle of the worm fastening mechanism are as follows:

a first downward pressing driving cylinder of the pre-tightening assembly drives a first sliding block to descend, a rubber pulling block on the first sliding block is matched with a worm on a first support, the first downward pressing driving cylinder drives the rubber pulling block on the first sliding block to press down to be attached to the worm, a first pre-tensioning driving cylinder drives a first support to move backwards, and the first support moves backwards to drive the rubber pulling block on the first sliding block and the worm to move backwards to pull out the end part of a rotor and the worm at a certain interval; the synchronous material moving mechanism moves the rotor worm to the right, the shaft end of the rotor is supported on the second support, the second downward pressing driving cylinder of the fastening assembly drives the groove on the second sliding block to move downwards and be clamped between the rotor and the worm, the second pulling driving cylinder drives the second support to move backwards, and the second support moves backwards to drive the groove on the second sliding block to pull the worm to move backwards so as to fasten the worm on the rotor.

The design of the utility model is characterized in that the worm is axially pulled back and forth twice through the pre-tightening component and the fastening component, and the worm is tightly installed at the end of the rotor shaft, so that the installation stability of the worm is improved, the integral structure of the product is firmer, and the operation is more stable; the rubber pulling block is embedded with the worm, the worm is pre-fastened on the rotor shaft, the rubber pulling block has certain elasticity, the phenomenon that the worm is damaged in the process of pulling the worm is avoided, the defective rate is reduced, and the assembling efficiency is improved.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention are within the technical scope of the present invention.

Claims

1. The worm fastening mechanism is characterized by comprising a pre-tightening component and a fastening component, wherein the pre-tightening component is used for pre-tightening a worm on a rotor, the fastening component is used for pulling the worm to a knurled part of a rotor shaft, and the pre-tightening component and the fastening component are arranged side by side; the pre-tightening assembly comprises a first bracket, a first downward pressing driving device and a first pre-tightening driving device, wherein the first downward pressing driving device is used for being embedded into the worm and applying downward pressure to the worm, and the first pre-tightening driving device is used for pulling the worm to pre-tighten the worm on the rotor shaft; the first pre-tensioning driving device is arranged on the first bracket, and the first downward pressing driving device is arranged on the first pre-tensioning driving device; the fastening assembly comprises a second bracket, a second pressing driving device used for clamping the worm and applying downward pressure to the worm, and a second pulling driving device used for pulling the worm to completely fasten the worm on the rotor shaft, wherein the second pulling driving device is arranged on the second bracket, and the second pressing driving device is arranged on the second pulling driving device.

2. The worm fastening mechanism of claim 1, wherein: the first pre-tensioning driving device comprises a first pre-tensioning driving cylinder and a first support used for supporting the end part of the rotor worm, the first pre-tensioning driving cylinder is longitudinally arranged on a first support, the first support is slidably arranged on the first support, the shaft end of the first pre-tensioning driving cylinder is connected with the first support, and the first pre-tensioning driving cylinder drives the first support to move on the first support; the first downward pressing driving device comprises a first downward pressing driving cylinder and a first sliding block; the first downward pressing driving cylinder is vertically arranged on the first support, the first sliding block is slidably positioned on the first support, the shaft end of the first downward pressing driving cylinder is connected with the first sliding block, and the first downward pressing driving cylinder drives the first sliding block to vertically move on the first support; the lower surface of the first sliding block is provided with a rubber pulling block which is matched with the worm on the first support; the second pulling driving device comprises a second pulling driving cylinder and a second support used for supporting the end part of the rotor worm, the second pulling driving cylinder is longitudinally arranged on a second support, the second support is slidably arranged on the second support, the shaft end of the second pulling driving cylinder is connected with the second support, and the second pulling driving cylinder drives the second support to move on the second support; the second downward pressing driving device comprises a second downward pressing driving air cylinder and a second sliding block, the second downward pressing driving air cylinder is vertically installed on the second support, the second sliding block is slidably located on the second support, the shaft end of the second downward pressing driving air cylinder is connected with the second sliding block, and the second downward pressing driving air cylinder drives the second sliding block to vertically move on the second support; the second slide corresponds to the second seat to mount the worm screw completely and tightly on the rotor shaft.

3. The worm fastening mechanism of claim 2, wherein: the lower end of the second sliding block is provided with a pulling plate for pulling the worm, a groove is formed in the pulling plate, the pulling plate abuts against the end of the worm to pull the worm to a knurled part of the rotor shaft, the second downward pressing driving cylinder drives the groove in the second sliding block to move downwards and be clamped between the rotor and the worm, the second pulling driving cylinder drives the second support to move backwards, and the second support moves backwards to drive the groove in the second sliding block to pull the worm to move backwards so as to fasten the worm on the rotor.

4. The worm fastening mechanism of claim 2, wherein: the rubber pulling block is provided with a plurality of embedding grooves for embedding the worm, the embedding grooves correspond to the thread walls of the worm, and the thread walls of the worm are embedded into the embedding grooves of the rubber pulling block.

5. The worm fastening mechanism of claim 3, wherein: the first support and the second support are both provided with support blocks for supporting the worm, the upper surfaces of the support blocks are provided with support grooves for placing the worm, the rubber pulling blocks can be vertically movably located above the support grooves of the first support, and the grooves of the second sliding blocks can be vertically movably located above the support grooves of the second support.

6. The worm fastening mechanism of claim 2, wherein: the first bracket is provided with a first proximity sensor for sensing the arrival of the first support; and a second proximity sensor used for sensing the arrival of the second support is arranged on the second support.

7. The worm fastening mechanism of claim 6, wherein: a first limiting rod used for limiting the backward moving position of the first support is arranged beside the first proximity sensor, the first pre-tensioning driving cylinder drives the first support to move backward, and the first support moves backward and abuts against the limiting rod; and a second limiting rod used for limiting the backward moving position of the second support is arranged beside the second proximity sensor, the second pulling driving cylinder drives the second support to move backward, and the second support moves backward and abuts against the limiting rod.

8. The worm fastening mechanism of claim 3, wherein: the first sliding block comprises a first vertical sliding part and a first transverse connecting part, the first vertical sliding part is slidably positioned on the first support, the shaft end of the first downward pressing driving cylinder is connected with the first transverse connecting part, and the rubber pulling block is arranged on the lower surface of the first transverse connecting part; the second sliding block comprises a second vertical sliding portion and a second transverse connecting portion, the second vertical sliding portion is located on the second support in a sliding mode, the shaft end of the second pressing driving cylinder is connected with the second transverse connecting portion, and the groove is formed in the lower surface of the second transverse connecting portion.