CN214184601U - Tension mechanism for continuously rolling wire blank - Google Patents

Abstract

A tension mechanism for continuously rolling wire billets belongs to the technical field of wire billet rolling. The utility model discloses a inlet wire roll, first leading wheel, position control pulley, second leading wheel, lead and defend, outlet wire roll, displacement sensor, tensile force cylinder and controller, inlet wire roll, first leading wheel, position control pulley, second leading wheel, lead and defend and outlet wire roll billet rolling direction along the line set gradually, the inlet wire roll is equipped with two, and the symmetry sets up around and, the outlet wire roll is equipped with two, and the symmetry sets up from top to bottom, displacement sensor is located tensile force cylinder department, tensile force cylinder links to each other with position control pulley, position control pulley compresses tightly the wire billet. The utility model discloses utilize displacement sensor to detect the position and control the pulley position, change the rolling speed of the roll of being qualified for the next round of competitions through the controller to ensure that the line base is in the tensioning state of moderate degree all the time, solved the synchronous rolling problem of each pass, eliminated the slip rate between the pass around the continuous roll is pricked, improved line base surface quality, reduced clastic production.

Description

Tension mechanism for continuously rolling wire blank

Technical Field

The utility model belongs to the technical field of the rolling of line base, specifically relate to a tension mechanism of continuous rolling line base.

Background

The rolling has the advantages of more energy saving and less pollutant emission compared with the drawing of a wire-drawing die, so the rolling is gradually applied to the processing of nonferrous metal wires with the diameter of more than 3.0mm in recent years, and plays a certain role in correcting the high-energy-consumption error zone of nonferrous metal processing. In order to improve the production efficiency, the rolling speed is usually over 300m/min, and higher requirements are put forward on parts such as a roller and the like so as to meet the requirements on precision and service life. With the development of the technology, the parts such as the roller and the like meet the use requirements, but have some problems. The single motor drive is suitable for the alloy with one component, and the independent motor drive controlled by frequency conversion is suitable for rolling the alloy with multiple components. The rolling mill controlled by a single motor can compensate for speed matching, so that a proper tension is kept between high and low rolling processes, a roller and a wire billet can slip, and the slip rate is generally controlled to be about 0.5-0.8%. For materials with excellent shaping such as copper and aluminum, the slip ratio has little influence on the processing process and products, but for zinc-based alloys with low melting point and poor shaping, wire blank breakage, increased chipping and surface damage are easily caused. At the same time, the presence of slip increases the additional load, as well as the energy consumption and the wear of the machine parts.

Therefore, a new solution is needed to solve this problem.

Disclosure of Invention

The utility model discloses solve the technical problem that above-mentioned prior art exists, provide a tension mechanism of continuous rolling line base.

The above technical problem of the present invention can be solved by the following technical solutions: the utility model provides a tension mechanism of continuous rolling line base, includes inlet wire roll, first leading wheel, position control pulley, second leading wheel, guide, outlet wire roll, displacement sensor, tensile force cylinder and controller, inlet wire roll, first leading wheel, position control pulley, second leading wheel, guide and outlet wire roll set gradually along the rolling direction of line base, the inlet wire roll is equipped with two, and front and back symmetry sets up, the outlet wire roll is equipped with two, and upper and lower symmetry sets up, displacement sensor is located tensile force cylinder department, tensile force cylinder links to each other with position control pulley, position control pulley compresses tightly the line base, the controller respectively with displacement sensor, tensile force cylinder electric connection, the controller passes through displacement sensor and detects position control pulley position, changes the rolling speed of outlet wire roll to adjust the line base tensioning.

Preferably, the adjusting range of the rolling speed of the wire outlet roller and the wire inlet roller is not more than +/-1.5%.

Preferably, the adjustment distance of the position control pulley is within 30 mm.

Preferably, the controller adopts a single-shaft servo driving system and a PLC (programmable logic controller) to be combined, the single-shaft servo driving system is matched with a single-shaft servo motor, and the single-shaft servo motor drives the wire outlet roller and the wire inlet roller respectively and independently.

The utility model discloses beneficial effect who has: the utility model discloses utilize displacement sensor to detect the position and control the pulley position, change the rolling speed of the roll of being qualified for the next round of competitions through the controller to ensure that the line base is in the tensioning state of moderate degree all the time, solved the synchronous rolling problem of each pass of continuous rolling, eliminated the slip rate between the pass around the continuous rolling, improved line base surface quality, reduced clastic production.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic diagram of a connection structure of the controller, the displacement sensor and the tension cylinder according to the present invention.

In the figure: 1. a wire inlet roller; 2. a first guide wheel; 3. a position control pulley; 4. a second guide wheel; 5. guiding and guarding; 6. a wire outlet roller; 7. a displacement sensor; 8. a tension cylinder; 9. a controller; 10. and (5) wire blank.

Detailed Description

The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.

Example (b): a tension mechanism for continuously rolling a wire blank is shown in figures 1-2 and comprises a wire inlet roller 1, a first guide wheel 2, a position control pulley 3, a second guide wheel 4, a guide 5, a wire outlet roller 6, displacement sensors 7, tension force cylinders 8 and a controller 9, wherein the wire inlet roller 1, the first guide wheel 2, the position control pulley 3, the second guide wheel 4, the guide 5 and the wire outlet roller 6 are sequentially arranged along the rolling direction of the wire blank 10, the wire inlet roller 1 is provided with two rollers which are symmetrically arranged from front to back, the wire outlet roller 6 is provided with two rollers which are symmetrically arranged from top to bottom, the displacement sensors 7 are positioned at the tension force cylinders 8, the tension force cylinders 8 are connected with the position control pulley 3 and can drive the position control pulley 3 to move up and down, the position control pulley 3 compresses the wire blank 10, the controller 9 is respectively and electrically connected with the displacement sensors 7 and the tension force cylinders 8, the controller 9 detects the position of the position control pulley 3 through the displacement sensor 7, changes the rolling speed of the wire outlet roller 6, and accordingly adjusts the tensioning of the wire blank 10, and the adjusting range of the rolling speed of the wire inlet roller 1 and the wire outlet roller 6 is not more than +/-1.5%.

Controller 9 adopts unipolar servo drive system and PLC to combine together, the supporting unipolar servo motor that uses of unipolar servo drive system, unipolar servo motor drives inlet wire roll 1 and outlet wire roll 6 respectively alone. The single-shaft servo driving system is a Siemens V90 single-shaft servo driving system, the PLC is a Siemens S7-1215PLC, the single-shaft servo motor is a Siemens S-1FL6 single-shaft servo motor, the Siemens V90 single-shaft servo driving system supports plug-and-play adjustment, the servo performance is fully optimized, the Siemens V7-1215 PLC can be quickly integrated, and the Siemens V7-1215 PLC has high reliability. The Siemens V90 single-shaft servo driving system and the Siemens S-1FL6 single-shaft servo motor are matched for use, and an optimal servo system can be formed. The Siemens V90 single-shaft servo driving system supports internal set value position control, external pulse position control, speed control and torque control, integrates pulse input, analog input/output, digital input/output and encoder pulse output interfaces, and can be automatically optimized into a system which has high dynamic performance and smooth operation through real-time automatic optimization and automatic resonance suppression functions. Through the mutual matching of the Siemens V90 single-shaft servo driving system, the Siemens S7-1215PLC and the Siemens S-1FL6 single-shaft servo motor, the speed control precision of the Siemens S-1FL6 single-shaft servo motor can reach +/-0.1 r/min, and the stable rolling of materials with different components can be completely met.

In order to achieve the effect of continuously rolling the wire blank 10, a plurality of rolling mills can be used in series, the distance between the stands can be determined reasonably according to the thickness of the wire blank 10, the larger the distance is, the easier the control of the synchronization precision is, but the occupied area of the stands can be increased, and the distance can be determined according to the actual situation on site. The diameter of the wire blank 10 is not suitable to be larger than 7.5mm, otherwise the synchronous precision is not easy to control, and meanwhile, the diameter of the wire blank 10 is not suitable to be smaller than 3.0mm, otherwise the productivity is affected. In order to realize the purpose of zero slip rate of continuous rolling, the tension mechanism is arranged between two adjacent frames, the wire inlet roller 1 is positioned on the former frame, the wire outlet roller 6 is positioned on the latter frame, the wire inlet roller 1 and the wire outlet roller 6 are driven by a single-shaft servo motor and are mutually independent, and the displacement sensor 7 is used for detecting the position of the position control pulley 3.

When the wire blank tensioning device is used, when the head of a wire blank 10 penetrates through a rolling mill, the tensioning air cylinder 8 drives the position control pulley 3 to move upwards and return to the initial position of the wire blank; when the wire blank 10 completely passes through the rolling mill and enters automatic linkage rolling, the tensioning air cylinder 8 drives the position control pulley 3 to move downwards to compress the wire blank 10. When the position control pulley 3 approaches to the tensioning limit position (namely, the wire blank straightening position), the displacement sensor 7 sends an analog quantity signal to the controller 9, and the controller 9 adjusts the wire outlet roller 6 to properly reduce the rolling speed so as to properly loosen the wire blank 10; when the position control pulley 3 is close to the relaxation limit position (namely the non-straightening position of the wire blank), the displacement sensor 7 sends an analog quantity signal to the controller 9, and the controller 9 adjusts the wire outlet roller 6 to properly increase the rolling speed so as to prevent the wire blank 10 from being excessively relaxed; meanwhile, the rolling speed of each pass of the wire inlet side is synchronously increased and decreased, the wire blank 10 is always in a proper tensioning state, and the wire blank is not excessively tensioned to generate slipping, so that the slipping rate is eliminated, abnormal breakage in the rolling process of the wire blank 10 is avoided, the generation of chips is reduced, and the surface quality of the wire blank 10 is improved.

Different alloy components have different spreading characteristics, the rolling speed of each pass needs to be matched and preset, then the rolling speed is adjusted through the tension mechanism, the adjustment range does not exceed +/-1.5 percent, exceeds +/-1.5 percent and lasts for 5min, and the controller 9 sends out an alarm to prompt that the preset rolling speed of the alloy components is unreasonably matched or the pass size of the roller is changed due to abrasion. Preferably, the adjustment distance of the position control pulley 3 is within 30mm, that is, the distance from the slack limit position of the wire blank 10 to the straightening position of the wire blank 10 is within 30mm, and is specifically selected according to the diameter of the wire blank 10.

The inlet roll 1 and the outlet roll 6 adopt an oval-round hole rolling process, that is, the inlet roll 1 deforms the round wire blank 10 into an oval cross-sectional shape, and the outlet roll 6 deforms the oval wire blank 10 into a round cross-sectional shape, and preferably, the shape of the rolling hole of the inlet roll 1 can adopt a lip-shaped structure as in a roll drawing die with the patent number of ZL201820731240.2 and the patent name of a novel structure.

To sum up, the utility model discloses utilize displacement sensor to detect the position and control the pulley position, change the rolling speed of outlet roller through the controller to ensure that the line base is in the tensioning state of moderate degree all the time, solved the synchronous rolling problem of each pass of continuous rolling, eliminated the slip rate between the pass around the continuous roller is pricked, improved line base surface quality, reduced clastic production.

Finally, it should be noted that the above embodiments are merely representative examples of the present invention. Obviously, the present invention is not limited to the above-described embodiments, and many modifications are possible. Any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should be considered as belonging to the protection scope of the present invention.

Claims (4)

1. A tension mechanism for continuously rolling wire billets is characterized by comprising a wire inlet roller, a first guide wheel, a position control pulley, a second guide wheel, a guide, a wire outlet roller, a displacement sensor, a tension cylinder and a controller, the two wire inlet rollers, the first guide wheel, the position control pulley, the second guide wheel, the guide and the wire outlet rollers are sequentially arranged along the rolling direction of the wire blank, the two outlet rollers are symmetrically arranged from front to back, the two outlet rollers are symmetrically arranged from top to bottom, the displacement sensor is positioned at the tensioning force cylinder, the tension cylinder is connected with a position control pulley, the position control pulley compresses the wire blank, the controller is respectively and electrically connected with the displacement sensor and the tension cylinder, the controller detects the position of the position control pulley through the displacement sensor, changes the rolling speed of the wire outlet roller and adjusts the tension of the wire blank.

2. The tension mechanism of continuously rolling wire billets as claimed in claim 1, characterised in that the rolling speed of the outlet and inlet rollers is adjusted within a range of ± 1.5%.

3. The tension mechanism for continuously rolling a wire rod as claimed in claim 1, wherein the adjustment distance of the position control pulley is within 30 mm.

4. The tension mechanism of claim 1, wherein the controller is combined with a PLC by using a single-shaft servo driving system, the single-shaft servo driving system is used in combination with a single-shaft servo motor, and the single-shaft servo motor drives the wire-out roll and the wire-in roll separately.

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