CN212944661U

CN212944661U - Line rod material roll gap measuring device

Info

Publication number: CN212944661U
Application number: CN202021492914.1U
Authority: CN
Inventors: 赵杰; 魏玉生
Original assignee: Gansu Jiu Steel Group Hongxing Iron and Steel Co Ltd
Current assignee: Gansu Jiu Steel Group Hongxing Iron and Steel Co Ltd
Priority date: 2020-07-24
Filing date: 2020-07-24
Publication date: 2021-04-13
Anticipated expiration: 2030-07-24

Abstract

The utility model relates to the technical field of a short stress line rolling mill, in particular to a wire rod roll gap measuring device, which aims to provide the wire rod roll gap measuring device, reduce the error of reading read data when a plug caliper is manually used for measurement, and improve the accuracy of the roll gap of the wire rod roll gap measuring device, and comprises a frame and the short stress line rolling mill on the frame, wherein the short stress line rolling mill comprises a rotating mechanism, a screw-down mechanism driven by the rotating mechanism and four pull rods, any one of the four pull rods is provided with an encoder, the wire rod roll gap measuring device also comprises a PLC controller, the encoder is arranged on one of the four pull rods of the screw-down mechanism of the rolling mill and rotates synchronously with a pressing mechanism, the automatic operation of adjusting the wire rod roll gap can be realized, and the displacement photoelectric information conversion data of a roll is measured by the encoder, and the roll gap value is transmitted to a PLC controller to calculate the accurate roll gap value of the rolling mill.

Description

Line rod material roll gap measuring device

Technical Field

The utility model relates to a technical field of short stress path rolling mill, specificly relate to a line rod roll gap measuring device.

Background

The short stress path rolling mill is a non-housing rolling mill, the structure of the rolling mill is different from that of the traditional housing rolling mill, and the rolling force is borne by four pull rods of two bearing seats of the rolling mill; the optimization of the position of the pull rod of the rolling mill can ensure that the bearing seat has higher rigidity, reduces the deformation of the rolling mill and the bearing seat, and the short stress path rolling mill has the main characteristics that: the rolling mill has short stress loop and high rigidity, ensures the high precision of products and is easy to realize negative tolerance rolling; the symmetrical adjustment of the roll gap can be realized, the operation is stable, and compared with the rolling mill with the same specification, the short stress path rolling mill has lighter weight, smaller overall dimension and small space between the frames, so that the rolling mill has the potential of saving investment in the length of an operating line and the height of a factory building;

at present, the roll gap adjustment of the domestic bar mill mainly adopts manual plug caliper measurement, and the direct measurement is also carried out on the red blank which is being rolled directly in the production process; although the method is simple and intuitive, the precision is poor, the safety risk exists in the operation of directly measuring the rolled piece in contact rolling in the large labor intensity production process of post workers, and the remote precise control cannot be realized.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a line rod roll gap measuring device reduces the artifical stopper slide caliper rule that uses and when measuring, gets the error of reading the data of reading, improves the precision of its roll gap.

The utility model discloses a realize above-mentioned purpose and specifically adopt following technical scheme:

a wire rod roll gap measuring device comprises a rack and a short stress line rolling mill on the rack, wherein the short stress line rolling mill comprises a rotating mechanism, a pressing mechanism driven by the rotating mechanism and four pull rods, an encoder is arranged on any one of the four pull rods, a code disc is arranged in the encoder, and the code disc is connected with a rotating part of the rotating mechanism; still be equipped with in the encoder with code wheel matched with light sensor, light sensor sets firmly in the encoder, line rod roll gap measuring device still includes the PLC controller, the PLC controller includes the count module, light sensor links to each other with the count module, the count module is used for counting the code wheel and just takes place the change that light and shade's change light sensor produced the signal of telecommunication once rotating a gap.

In the above structure: the encoder is arranged on one of four pull rods of a screw-down mechanism of a rolling mill and synchronously rotates with the press mechanism, so that the automatic operation of adjusting the roll gap of a bar and bar roller can be realized; the pulse signal is sent to a PLC controller for counting, so that the rotating angle of the disc can be reflected, and the displacement of the roller can be truly reflected.

As a preferable scheme, two sets of signal electric angle difference 90-degree photoelectric conversion loops for identifying the rotation direction of the adjusting rod of the rolling mill are also arranged in the encoder; the rotation direction of the adjusting rod of the rolling mill can be identified through the change of the phase difference of the output signals of the encoder, so that the PLC controller can distinguish whether the roller is pressed down or loosened.

As a preferred scheme, a display screen is further arranged on the short stress path rolling mill, the display screen is fixed on the short stress path rolling mill, and the display screen is in signal connection with the PLC controller and is used for displaying a roller pressing displacement signal calculated by the PLC controller, so that a user can conveniently control the short stress path rolling mill by watching the display screen to operate the PLC controller.

As a preferable scheme, the rack is further provided with an LED lamp, and the LED lamp is connected to the PLC controller and used for distinguishing that when the rack is selected, the corresponding LED lamp on the rack is on, and then the display screen displays the roll gap value data of the selected rack.

As a preferred scheme, the encoder adopts a shaft sleeve type encoder, particularly an incremental encoder or an absolute value type encoder, and has the characteristics of high resolution and high reliability, and an angle-to-digital sensor is adopted; meanwhile, the shaft sleeve type encoder is matched with a special plug with a needle, the dismounting process does not need to dismount wires, and the field overhaul and replacement are very convenient.

The utility model has the advantages as follows:

(1) the encoder is arranged on one of four pull rods of the original rolling mill screw-down mechanism and rotates synchronously with the press mechanism, the encoder and the code disc rotate along with the working shaft, light and shade change occurs once the code disc rotates through a gap, an electric pulse output signal is collected through the photosensitive element, the pulse signal is sent to a counter of the PLC controller to be counted, then the counting code can reflect the rotating angle of the disc, and the displacement of the roller can be truly reflected.

(2) The change of the phase difference of the output signals of the encoder can identify the rotating direction of the adjusting rod of the rolling mill, distinguish whether the roller is pressed down or loosened in a control system, and finally, the PLC controller can accurately calculate the roll gap value of the rolling mill.

(3) The display screen is used for displaying a roller pressing displacement signal calculated by the PLC, and a user can conveniently control the short stress path rolling mill by watching the display screen to operate the PLC.

(4) When the LED lamp is arranged for distinguishing the selected rack, the corresponding LED lamp on the rack is on, and then the display screen displays the roll gap value data of the selected rack.

(5) The shaft sleeve type encoder is matched with a special plug with a needle, a dismounting process does not need to dismount a wire, and field maintenance or replacement is more convenient.

Drawings

FIG. 1 is a schematic diagram of the circuit structure of the present invention;

FIG. 2 is a simplified flow chart of the present invention;

reference numerals: 1. a rotating mechanism; 2. an encoder; 3. a display; 4. a PLC controller; 5. an LED lamp.

Detailed Description

For a better understanding of the present invention, the present invention will be described in further detail with reference to the accompanying drawings and the following embodiments.

Example (b):

a common rolling mill pressing lower mechanism adopts a worm-worm gear, a gear device rotates four pull rods, and an upper roller and a lower roller are symmetrically adjusted relative to a rolling line under the action of forward and reverse threads of the pull rods; the screwdown gear is driven by a manual hydraulic motor to carry out quick adjustment in a traditional mode of a transmission side, and can also carry out manual fine adjustment on an operation side, the screwdown amount is displayed by a dial, and the screwdown of a roller is about 0.2mm after the hydraulic motor rotates for one circle;

as shown in fig. 1-2, a device for measuring a roll gap of a roller of a wire rod comprises a rack and a short stress line rolling mill on the rack, wherein the short stress line rolling mill further comprises a rotating mechanism 1, a screw-down mechanism driven by the rotating mechanism 1 and four pull rods, an encoder 2 is arranged on any one of the four pull rods, a code disc is arranged in the encoder 2, and the code disc is connected with a rotating part of the rotating mechanism 1; still be equipped with in the encoder 2 with code wheel matched with light sensitive element, bar material roll gap measuring device still includes PLC controller 4, and PLC controller 4 includes the count module, and light sensitive element links to each other with the count module, and the count module is used for counting the change that the light and shade's change light sensitive element just takes place once every turn a gap of code wheel produces the change of signal of telecommunication.

In the structure, the photosensitive element is specifically a photosensitive diode, the sensitivity is high, the size is small, the use is convenient, the air drying and the like are achieved, the specific model of the used counting module is FM350-1, the specific model of the PLC 4 is 6ES7-350-1, the encoder 2 is installed on one of four pull rods of a pressing mechanism of the rolling mill and rotates synchronously with the pressing mechanism, the automatic operation of adjusting the roll gap of the wire and bar roll can be realized, the principle is that the rotating part of the encoder 2 is connected with an adjusting rod of the rolling mill, the encoder 2 and a code wheel rotate together with a working shaft, and the photosensitive element generates once electric energy to truly reflect the displacement of the roll.

Wherein, the encoder 2 is also internally provided with two signal changes to obtain an electric pulse output signal with certain amplitude and power; the electric pulse output signal of the photosensitive element is transmitted to a counter of the PLC 4 for counting, a counting code disc reflects the rotating angle of a disc, namely, a photoelectric conversion circuit with the signal electric angle difference of 90 degrees is sleeved, a slotless concentric winding is adopted, coils forming the winding are formed by winding a plurality of strands of litz wires in parallel, and the plurality of coils are connected in parallel to form the winding for identifying the rotating direction of the adjusting rod of the rolling mill; the direction of rotation of the mill adjustment lever can be identified by the change in the phase difference of the output signals of the encoder 2, so that the PLC controller 4 can distinguish whether the roll is being rolled down or being unrolled.

Meanwhile, a display screen is also arranged on the short stress path rolling mill, the display screen is fixed on the short stress path rolling mill, the display screen is in signal connection with the PLC 4, and the PLC 4 is connected with the input signal end of the encoder 2 and is used for displaying the roller pressing displacement signal calculated by the PLC 4; the user can conveniently control the work of the short stress path rolling mill by watching the display screen to operate the PLC 4.

And the rack is also provided with an LED lamp 5, the LED lamp 5 is connected with the PLC 4 and used for distinguishing that when the rack is selected, the corresponding LED lamp 5 on the rack is on, and then the display screen displays the roll gap value data of the selected rack.

Finally, the encoder 2 adopts a shaft sleeve type encoder 2, and the type of the encoder 2 is an incremental encoder 2 or an absolute value type encoder 2; it has the characteristics of high resolution and strong reliability; meanwhile, the shaft sleeve type encoder 2 is matched with a special plug with a needle, the dismounting process does not need to dismount wires, and the field overhaul and replacement are very convenient.

In summary, in the embodiment, the roll gap initial value is set each time the roll or the encoder 2, and the roll gap mm is the input value of the incremental encoder 2/the number of pulses per millimeter of the roll gap-the gear gap correction value of the screw-down mechanism; the encoder 2 that adds relies on photoelectric signal's change and transmits to and calculate data by PLC controller 4, replaces manual measurement, reduces the error that manual measurement got the data of reading, simultaneously, can also reduce manual work's work load, and is more convenient.

The embodiments of the present invention are just the embodiments, and the specific parameters in the embodiments and the above embodiments are only for the purpose of clearly expressing the verification process of the present invention, and are not used to limit the patent protection scope of the present invention, the patent protection scope of the present invention still uses the claims as the standard, and all the equivalent structural changes made by the contents of the description and the drawings of the present invention should be included in the protection scope of the present invention.

Claims

1. A wire rod roll gap measuring device comprises a rack and a short stress line rolling mill on the rack, wherein the short stress line rolling mill comprises a rotating mechanism, a pressing mechanism driven by the rotating mechanism and four pull rods; a photosensitive element matched with the code disc is further arranged in the encoder, and the photosensitive element is fixedly arranged in the encoder;

the device for measuring the roll gap of the wire rod roller further comprises a PLC (programmable logic controller), wherein the PLC comprises a counting module, and the photosensitive element is connected with the counting module;

the counting module is used for counting the change of light and shade of the light sensitive element to generate an electric signal every time the code disc rotates a gap.

2. The wire and rod roll gap measuring device of claim 1, wherein two sets of photoelectric conversion circuits with 90 ° difference in signal electrical angle are further provided in the encoder.

3. The device for measuring the roll gap of the wire rod and the roll according to claim 1, wherein a display screen is further arranged on the short stress path rolling mill, the display screen is fixed on the short stress path rolling mill, and the display screen is in signal connection with the PLC and used for displaying a roll reduction displacement signal calculated by the PLC.

4. The wire and rod material roller gap measuring device according to claim 1, wherein the rack is further provided with an LED lamp, and the LED lamp is connected with the PLC.

5. The wire and rod roll gap measuring device of claim 1, wherein the encoder is a sleeve type encoder.

6. A wire and rod roll gap measuring device as claimed in claim 5, wherein said encoder is of the incremental type or absolute type.