CN113458319A

CN113458319A - High-precision control system for processing endless chain

Info

Publication number: CN113458319A
Application number: CN202110651008.4A
Authority: CN
Inventors: 程攀峰; 刘巍; 张建波; 郭旭成
Original assignee: Yangquan Coal Huamao Chain Co ltd
Current assignee: Yangquan Coal Huamao Chain Co ltd
Priority date: 2021-06-10
Filing date: 2021-06-10
Publication date: 2021-10-01
Anticipated expiration: 2041-06-10
Also published as: CN113458319B

Abstract

The invention discloses a high-precision control system for processing a ring chain, which comprises the procedures of resetting and top ring after being bent in place, wherein the stroke of an oil cylinder is manually prolonged by adding a procedure of resetting backwards and then pushing the ring forwards before two roller arms are bent in place and enter the top ring procedure, so that a stroke switch can accurately control the stroke of the oil cylinder, the positioning accuracy is improved, and the distance of a ring opening is ensured to be less than 1mm, so that the subsequent welding procedure is facilitated.

Description

High-precision control system for processing endless chain

Technical Field

The invention relates to a high-precision control system for processing a ring chain.

Background

In the chain knitting process of the chain knitting machine in the mining chain production industry, certain measures are adopted, so that the distance between the ring openings is smaller than 1mm, two end faces are required to be parallel, and horn openings are not allowed to appear.

The common processing mode is that in the chaining process, a roller top ring is added to act, and the two ends of a ring opening are ensured to be parallel through the front top amount of about 2-5mm, and a horn mouth does not appear.

The small-specification chaining device has the advantages that the bending radius is small, the front arc ends of the front roller and the rear roller which are bent have a certain distance on the same central axis, the small-specification chaining device is limited in processing capacity, the hydraulic pressure is small, the sensitivity of a travel switch is relatively high, and the control is convenient.

However, in the large-size chaining equipment, mechanical equipment is large, hydraulic pressure is also large, mechanical inertia is also large, and the requirements on control parts are also higher.

The traditional solution is to adopt a servo system to replace the traditional oil cylinder control method, but the direct cost and the indirect cost after the servo system is added are both higher, and professional personnel are required to be equipped for daily maintenance, and the servo system is extremely easy to damage under the working condition due to the higher impact force of the hydraulic system of the chaining machine.

Disclosure of Invention

The invention aims to solve the defects of the prior art and provide a high-precision control system for processing a loop chain.

A high-precision control system for processing a ring chain comprises the following steps:

firstly, closing a central clamping fixture, driving a left roller and a right roller to move to a front position by a main shaft, and enabling the arc center of the rollers to exceed the front edge of the central clamping fixture by about 1.2-1.5 times of the diameter of the bar;

secondly, the positioning rod advances to position at the moment to determine the real-time position;

thirdly, the material pushing rod pushes another bar to pass through the center of the central clamping fixture;

fourthly, returning the material pushing rod;

the main shaft retreats, the left roller and the right roller move at the moment, and the bar stock is bent into a U shape;

sixthly, the left roller and the right roller rotate towards the central axis at the same time, and the bar is gradually bent;

seventhly, continuing to move the left roller to bend the left end of the bar in place, and enabling the right roller to be static and abut against the right end of the bar;

eighthly, retreating the main shaft backwards to a rear position;

ninthly, moving the left idler wheel forwards, and pushing the ring opening at the left end of the bar forward to a specified position;

the left roller and the right roller return to the home position, the right roller continues to rotate towards the central line for two times and bends the bar stock, so that the front edge of the right end face of the bar stock moves to the central axis, and then feeding is stopped and pressure maintaining and shaping are carried out;

the left roller and the right roller return to the original positions backwards and then move forwards to push the ring opening at the right end forwards to a specified position so as to complete the positioning of the ring opening.

Preferably, the central mould is waist-shaped, and the width of the middle groove of the central mould is larger than the diameter of the bar stock.

Preferably, the annular openings are connected by welding.

Preferably, the motion of the main shaft, the left roller and the right roller is controlled by limit switches.

Preferably, the shape of the loop chain is waist-shaped, and the middle part of the loop chain is provided with a straight section.

Has the advantages that:

in the operation process of the system, before two roller arms are bent forwards to a proper position and enter a top ring process, the stroke of the oil cylinder is manually prolonged by adding a process of resetting backwards and then pushing the oil cylinder forwards, so that the stroke of the oil cylinder can be accurately controlled by a stroke switch, the positioning accuracy is improved, and the distance of a ring opening is ensured to be less than 1mm, so that the subsequent welding process is facilitated.

This application draws the stroke more than 20mm at the master cylinder backward, makes its forward motion apical ring again, can solve traditional inductive switch or the inaccurate problem of limit switch short distance location, after dropping into the experiment, has gained fine effect.

Drawings

FIG. 1 is a first schematic diagram of processing a chain;

FIG. 2 is a second schematic diagram of the processing of a chain;

FIG. 3 is a third schematic diagram of the processing of a chain;

FIG. 4 is a fourth schematic view in the processing of a loop chain;

FIG. 5 is a fifth schematic view in processing of a chain;

FIG. 6 is a sixth schematic representation of the processing of a link chain;

FIG. 7 is a seventh schematic view in processing of a chain;

1. the bar 2, the left roller 3, the right roller 4 and the central clamping fixture.

Detailed Description

For the purpose of enhancing the understanding of the present invention, the present invention will be further described in detail with reference to the following examples and the accompanying drawings, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.

secondly, the positioning rod advances to position at the moment, and the real-time position is determined;

thirdly, the material pushing rod pushes another bar to pass through the center of the center clamping fixture (completing the threading part in the chain knitting operation);

fourthly, the material pushing rod returns, and the state is shown in figure 1;

the main shaft retreats, the left roller and the right roller move at the moment, the bar is bent into a U shape, and the state is shown in figure 2 at the moment;

sixthly, the left roller and the right roller rotate towards the central axis at the same time, and the bar is gradually bent, and the state is shown in figure 3;

eighthly, retreating the main shaft backwards to a rear position, wherein the state at this time is shown in figure 5;

ninthly, moving the left roller forwards to push the ring opening at the left end of the bar forward to a specified position, and at the moment, as shown in FIG. 6;

the left roller and the right roller retreat backward to the original positions and move forward to push the ring opening at the right end forward to a specified position so as to complete the positioning of the ring opening, and the positioning is shown in fig. 7.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A high-precision control system for processing a ring chain is characterized by comprising the following steps:

fourthly, returning the material pushing rod;

eighthly, retreating the main shaft backwards to a rear position;

2. The high-precision control system for processing the ring chain as claimed in claim 1, wherein the central clamping fixture is waist-shaped, and the width of the middle groove of the central clamping fixture is larger than the diameter of a bar stock.

3. The high-precision control system for processing the loop chain as claimed in claim 1, wherein the loop openings are connected by welding.

4. The high-precision control system for processing the endless chain as claimed in claim 1, wherein the movements of the main shaft, the left roller and the right roller are controlled by limit switches.

5. The high-precision control system for processing the loop chain as claimed in claim 1, wherein the loop chain is waist-shaped, and a straight section is arranged in the middle of the loop chain.