CN214200134U

CN214200134U - Linear actuator

Info

Publication number: CN214200134U
Application number: CN202120102904.0U
Authority: CN
Inventors: 陈志民; 陈昊
Original assignee: Ccm Automation Technology Co ltd
Current assignee: Ccm Automation Technology Co ltd
Priority date: 2021-01-14
Filing date: 2021-01-14
Publication date: 2021-09-14
Anticipated expiration: 2031-01-14

Abstract

The utility model relates to the technical field of linear modules, in particular to a linear actuating mechanism, which comprises a linear moving device, a motor and a driver which are in driving connection with the linear moving device, and a PC end which is connected with the driver; the linear moving device comprises a detection module, a rail beam, a sliding block module connected with the rail beam in a sliding manner, and a transmission module arranged in the rail beam and connected with the sliding block module; the detection module comprises an information processing module arranged on the driver, a sensing head arranged at the bottom of the sliding block module, and a magnetic grid ruler arranged on the rail beam and correspondingly arranged on the sensing head. The utility model provides a traditional linear module, simple structure, the lower scheduling problem of positioning accuracy.

Description

Linear actuator

Technical Field

The utility model relates to a linear module technical field especially relates to a linear actuating mechanism.

Background

In the processing and manufacturing industry, with the increase of labor cost and the improvement of scientific technology, automatic processing equipment is more and more favored by people, but the popularization of the automatic equipment necessarily relates to the input manufacturing cost and the maintenance cost of the automatic equipment. The linear conveying system has an increasingly wide application range, the application range of the linear conveying system includes but is not limited to industries such as production lines, assembly automation first-level transportation and packaging, and meanwhile, the requirements of each industry on flexibility, customization, transportation speed, control precision, stability, anti-interference performance, service life and the like of the linear conveying system are also increasingly high.

But traditional linear module, simple structure, positioning accuracy is lower, is difficult to satisfy customer's demand.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a linear actuator with smart and reasonable structural design and high positioning accuracy for solving the problems of the conventional technology.

A linear actuator comprises a linear moving device, a motor in driving connection with the linear moving device, a driver and a PC end connected with the driver; the linear moving device comprises a detection module, a rail beam, a sliding block module connected with the rail beam in a sliding manner, and a transmission module arranged in the rail beam and connected with the sliding block module; the detection module comprises an information processing module arranged on the driver, a sensing head arranged at the bottom of the sliding block module, and a magnetic grid ruler arranged on the rail beam and correspondingly arranged on the sensing head.

In one embodiment, the linear moving device comprises a tailstock and a terminal block; the tail bases are arranged at two ends of the rail beam; the terminal block is arranged on the surface of the sliding block module; the terminal block is connected with the information processing module.

In one embodiment, the transmission module comprises a transmission shaft installed in the tailstock and a transmission belt installed in the rail beam and connected with the transmission shaft.

In one embodiment, the linear movement device comprises a belt clamping module; the belt clamp modules are arranged on two sides of the sliding block module.

In one embodiment, the linear moving device comprises a fixed module; the fixed module comprises a side plate and a fixed seat; the sensing head passes through curb plate and fixing base with the slider module is connected.

In one embodiment, the slider module comprises a slider member, end caps mounted on both sides of the slider member, and a wiper mounted on each of the end caps.

In one embodiment, the slide block module further comprises at least two groups of obstacle removing pieces; the obstacle removing piece is arranged at the bottom of the sliding block piece.

In one embodiment, the linear motion device comprises a guide element; the guide element is mounted in the slider member; the guide element is a roller, a ball or a slide rail.

In one embodiment, the top surface of the rail beam is formed with a groove along the length direction; the magnetic grid ruler is positioned in the groove.

In one embodiment, the driver comprises a power supply module and a control module; the information processing module is installed on the control module.

The utility model has the advantages as follows:

the utility model has the advantages of ingenious and reasonable structural design of the linear actuating mechanism, high positioning accuracy, and concretely comprises a linear moving device, a motor and a driver are in driving connection with the linear moving device, a PC end is connected with the driver, the actual position value of a slider module is sensed by the mutual matching of a sensing head and a magnetic grid ruler which are positioned at the bottom of the slider module, an information processing module collects and transmits the actual position value of the slider module to the driver, a control module receives the actual position value of the slider module and calculates the difference value between the actual position value and the theoretical position value of the slider module, when the absolute value of the difference value is less than or equal to a preset value, the motor stops running, when the absolute value of the difference value is more than the preset value, the moving error of the slider module is larger, the control module sends a correction instruction to the motor, and the motor drives the slider module to move along a rail beam according to the difference value, therefore, a full closed loop with position feedback is formed, and the moving precision of the sliding block module is improved.

Drawings

Fig. 1 is a schematic perspective view of a linear moving device of a linear actuator according to the present invention;

FIG. 2 is an exploded perspective view of the linear actuator of FIG. 1;

FIG. 3 is a cross-sectional view of a linear motion device of the linear actuator of FIG. 1;

FIG. 4 is a schematic perspective view of a rail beam of the linear actuator of FIG. 1;

fig. 5 is a schematic perspective view of the actuator of the present invention;

FIG. 6 is a schematic diagram of a position detection method of the present invention;

fig. 7 is a flowchart of the position detection method of the present invention.

Description of reference numerals: the linear moving device 10, the detection module 11, the information processing module 11a, the sensing head 11b, the magnetic scale 11c, the rail beam 12, the groove 12a, the slider module 13, the slider member 13a, the end cap 13b, the wiper 13c, the obstacle removing member 13d, the transmission module 14, the transmission shaft 14a, the transmission belt 14b, the tail seat 15, the terminal block 16, the belt clamp module 17, the fixing module 18, the side plate 18a, the fixing seat 18b, the guide element 19, the motor 20, the driver 30, the power supply module 31, the control module 32 and the PC terminal 40.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully below. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

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.

Please refer to fig. 1 to 7, which are schematic views of a linear actuator according to an embodiment of the present invention, the linear actuator has a smart and reasonable structural design and a high positioning accuracy.

As shown in fig. 1 to 6, in the present embodiment, the linear actuator includes a linear moving device 10, a motor 20 drivingly connected to the linear moving device 10, a driver 30, and a PC terminal 40 connected to the driver 30; the linear moving device 10 comprises a detection module 11, a rail beam 12, a slider module 13 connected with the rail beam 12 in a sliding manner, and a transmission module 14 arranged in the rail beam 12 and connected with the slider module 13; the detection module 11 includes an information processing module 11a mounted on the driver 30, a sensor head 11b mounted on the bottom of the slider module 13, and a magnetic scale 11c mounted on the rail beam 12 and disposed corresponding to the sensor head 11 b.

As shown in fig. 4, the top surface of the rail beam 12 is formed with a groove 12a in the length direction; the magnetic grid ruler 11c is positioned in the groove 12a, and the groove 12a is arranged to fix the magnetic grid ruler 11c effectively.

As shown in fig. 1 to 6, the slider module 13 includes a slider member 13a, end caps 13b attached to both sides of the slider member 13a, and wipers 13c attached to the end caps 13 b; the slide block module 13 also comprises at least two groups of obstacle removing pieces 13 d; the obstacle removing piece 13d is arranged at the bottom of the sliding block piece 13 a; in this embodiment, the wiping parts 13c on the two sides of the sliding block part 13a are used for wiping the rail beam 12, when the sliding block part moves back and forth, dust and scrap iron can be continuously swept, the cleaning and lubricating effects can be kept in real time, the barrier removing part 13d arranged at the bottom of the sliding block part 13a is used for sweeping dust on the magnetic grid ruler 11c, the barrier sweeping effect is good, and the sliding block part 13a can move more smoothly.

The transmission module 14 comprises a transmission shaft 14a arranged in the tailstock 15 and a transmission belt 14b arranged in the rail beam 12 and connected with the transmission shaft 14 a; the linear-motion device 10 includes a tailstock 15 and a terminal block 16; the tail bases 15 are arranged at two ends of the rail beam 12; the terminal block 16 is mounted on the surface of the slider module 13; the terminal block 16 is connected to the information processing module 11a to transmit positional information of the slider module 13.

The linear-motion device 10 includes a belt-clamping module 17; the belt clamping modules 17 are arranged on two sides of the sliding block module 13; the linear moving device 10 includes a fixed module 18; the fixed module 18 comprises a side plate 18a and a fixed seat 18 b; the sensing head 11b is connected to the slider module 13 through the side plate 18a and the fixing base 18b, and in this embodiment, the side plate 18a and the fixing base 18b have a good fixing effect on the sensing head, and are convenient to mount and dismount.

The linear-motion device 10 comprises a guide element 19; the guide element 19 is mounted in the slider piece 13 a; the guide element 19 is a roller, a ball or a slide rail; the driver 30 includes a power supply module 31 and a control module 32; the information processing module 11a is mounted on the control module 32; in this embodiment, the information processing module 11a is internally connected to the control module 32, or the information processing module 11a and the control module 32 are integrally provided.

As shown in fig. 6 to 7, the present invention further provides a position detection method, which is based on the linear actuator, and includes the following steps:

s1: the PC terminal 40 sends an instruction to the driver 30 and records the theoretical position value S;

s2: the driver 30 controls the motor 20 to drive the slider module 13 to move along the rail beam 12;

s3: the sensing head 11b senses the position of the slider module 13 through the magnetic grid ruler 11c, and transmits the information of the actual position value P of the slider module 13 to the control module 32 through the information processing module 11 a;

s4: the control module 32 receives the actual position value P of the slider module 13 and calculates a difference value M between the actual position value P and the theoretical position value S of the slider module 13;

s5: comparing the difference value | M | with a preset value N, and when | M | is greater than N, entering step S6; when the absolute value of M is less than or equal to N, the step S7 is executed;

s6: the control module 32 issues a correction instruction to the motor 20, and after the motor 20 drives the slider module 13 to move along the rail beam 12 according to the difference M, the step returns to step S3;

s7: the motor stops operating.

The utility model discloses a linear actuator's structural design is ingenious reasonable, positioning accuracy is high, it is specific including linear mobile device 10, motor 20 and driver 30 are connected with linear mobile device 10 drive, PC end 40 is connected with driver 30, through being located the sensing head 11b and the magnetic grid chi 11c of slider module 13 bottom mutually support and respond to the actual position value of slider module 13, information processing module 11a collects and transmits the actual position value of slider module 13 to driver 30, control module 32 receives the actual position value of slider module 13, and calculate the difference of slider module 13 actual position value and theoretical position value, when the absolute value of this difference is less than or equal to the default, motor 20 stops the operation, when the absolute value of this difference is greater than the default, then explain the movement error of slider module 13 great, control module 32 issues the revision instruction to motor 20, the motor 20 drives the slider module 13 to move along the rail beam 12 according to the difference, thereby forming a full closed loop of position feedback, and improving the moving precision of the slider module 13.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is 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

1. A linear actuator is characterized by comprising a linear moving device, a motor which is in driving connection with the linear moving device, a driver and a PC end which is connected with the driver; the linear moving device comprises a detection module, a rail beam, a sliding block module connected with the rail beam in a sliding manner, and a transmission module arranged in the rail beam and connected with the sliding block module; the detection module comprises an information processing module arranged on the driver, a sensing head arranged at the bottom of the sliding block module, and a magnetic grid ruler arranged on the rail beam and correspondingly arranged on the sensing head.

2. The linear actuator of claim 1, wherein the linear moving device comprises a tailstock and a terminal block; the tail bases are arranged at two ends of the rail beam; the terminal block is arranged on the surface of the sliding block module; the terminal block is connected with the information processing module.

3. The linear actuator of claim 2, wherein the drive module comprises a drive shaft mounted in the tailstock and a drive belt mounted in a rail beam and connected to the drive shaft.

4. The linear actuator of claim 1, wherein the linear movement device includes a belt clamping module; the belt clamp modules are arranged on two sides of the sliding block module.

5. The linear actuator of claim 1, wherein the linear movement device comprises a stationary module; the fixed module comprises a side plate and a fixed seat; the sensing head passes through curb plate and fixing base with the slider module is connected.

6. The linear actuator of claim 1, wherein the slider module includes a slider member, end caps mounted on opposite sides of the slider member, and a wiper mounted on each of the end caps.

7. The linear actuator of claim 6, wherein the slide module further comprises at least two sets of clearance members; the obstacle removing piece is arranged at the bottom of the sliding block piece.

8. The linear actuator of claim 6, wherein the linear movement device includes a guide element; the guide element is mounted in the slider member; the guide element is a roller, a ball or a slide rail.

9. The linear actuator of claim 1, wherein the top surface of the rail beam is formed with a groove along a length direction; the magnetic grid ruler is positioned in the groove.

10. The linear actuator of claim 1, wherein the driver includes a power module and a control module; the information processing module is installed on the control module.