KR101022444B1 - Device for controling Up-loop of wire - Google Patents

Abstract

An object of the present invention is to vertically swing the up-roof roll to be synchronized with the shape of the material loop changes depending on the rolling conditions to operate freely in the horizontal, vertical form under a constant pressure of the pneumatic cylinder and to guide the material to the center even in the loop change To provide a wire rod up-roll roll control device.

Accordingly, the present invention is a parallel roll positioned at the starting point and the end point where the up loop of the material is formed between the front and rear rolling rolls, and the up and down rolls for controlling the lifting and lowering of the material at the center corresponding to the parallel roll. And a roll holder for rotatably supporting the up-roll roll, a pneumatic cylinder connected to the roll holder to rotate the roll holder, and detecting a material passing between the parallel rolls to move the up-up roll up and down operation and loop. A scanner for transmitting a position as an electrical signal, a control unit for adjusting the turning power pneumatic of the pneumatic cylinder based on the signal of the scanner, and a load installed between the roll holder and the up-roll roll to distribute the load of the up-roll roll It provides a wire rod up-roll control device including a dispersion.

Up-up roll, controller, roll shaft, multi-sided roller, through hole

Description

Wire rod up-roll control device {Device for controling Up-loop of wire}

1 is a schematic view showing a state in which a wire is up-looped in a general wire rod installation,

Figure 2 is a side view showing the operating state of the up-roll roll according to the prior art,

3 is a perspective view showing a wire rod up-roll control device according to an embodiment of the present invention,

Figure 4 is a perspective view of a part of the wire rod up-roll control device according to an embodiment of the present invention,

5 is an exploded perspective view of FIG. 4 according to the present invention;

6 is a cross-sectional view of FIG. 4 according to the present invention;

7 is a side view showing a part of the configuration of FIG. 4 according to the present invention;

8 is a side view showing an operating state of the wire rod up-roll roll according to an embodiment of the present invention,

9 is a view schematically showing an operating state of the wire rod up-roll control device according to an embodiment of the present invention.

The present invention relates to a wire rod up-loop roll for performing an up loop operation to control the load (tension) of the hot rolled material in the intermediate and finishing rolling end during the wire rod and bar rolling, in more detail rolling conditions The present invention relates to a wire rod up-loop control device that efficiently absorbs a load generated when up-looping a material and recognizes a rotation state according to the load.

In general, the wire drawing process is carried out at the proper temperature in the heating furnace to go through the rough rolling, intermediate rolling and finishing rolling process, and then go through the water cooling process to form a spiral coil and heat treatment according to the conditions of the production material, then correct Transferred to the line.

Meanwhile, in the middle and finishing rolling of the wire rod, the loops of each shape are formed so as to uniformly pass through the rolled material and apply a uniform load between the rolling rolls during the rolling period.

The reason for forming the loop is defined by distributing the load of the rolling material according to the speed change between the front and rear processes (each rolling mill), the temperature change for each material part, the rolling load change according to the steel type component, and the difference in the rolling mill efficacy. It is to get a production mirror.

However, if the loop is excessive or tension loop is generated, the material is separated from the line or the disconnection occurs between the materials, and the cause of quality defects is caused by the occurrence of abnormal diameters (ears, compression diameters) larger or smaller than the prescribed production diameter. .

This looping process is to reduce the diameter deviation of the final product to make the production standard uniform and to make the whole process stable during the rolling period. In particular, the uproof roll, which is in charge of loop control, is an essential component of the equipment. .

Therefore, the loop operation for load control of the material in the wire rod process has a great influence in determining the quality of the wire rod product, and is performed for each section of the rolling period and proceeds continuously.

Looking at the above-mentioned up-loop control in more detail, as shown in Figure 1, the material heated in the furnace is rolled in the rough rolling (1), and then loops (2a) (2b) (2c) in each rolling mill in the medium-phase rolling (2) After the final loop control at the tip of the finishing rolling (3), and then the water cooling section (4) to form a spiral coil (5a) by the winder (5) after water cooling according to the conditions of the production material roller conveyor ( 6) is transferred to the correction line.

As shown in Figure 2 to form the up-loop (2a) (2b) (2c) of this type, an up-loop roll is used, the material (S) is caught on the front and rear rolling rolls (100a) (100b) (Indentation) At the same time, the up-roof roll 10 located in the middle lifts the material and raises the material s to the height of the scanner 20C to form and control a general loop.

At this time, an excessive load is instantaneously generated on the up loop roll 110. And when there is a change in the rolling conditions, the rotation of the up-roll roll 110 as described above when the loop is controlled to a certain size by increasing and decreasing in the forward and backward directions of the forward and backward rolling rolls 100a and 100b. There is a sudden load on the support shaft. The above-mentioned loop change is changed at any time at high speed due to the influence of rolling conditions, and is further deepened during the control rolling of the high-grade steel.

The control of the conventional up-loop is performed as a whole between the front and back rolling rolls 100a and 100b by receiving a signal from the scanner 20C, and the up-up roll 110 is also raised and lowered every time there is a loop change. Adjust appropriately.

However, the conventional up-loop roll is a loop under a state in which the material is raised without being increased or decreased in the forward / reverse direction of the forward and backward rolling rolls while the material is raised by a constant pneumatic in response to a signal from a scanner. Is adjusted and then falls when the material is finished.

As described above, when the rolling conditions change during the loop adjustment, if the loop size of the front and rear rolling rolls is small (tension occurs between the rolling mill rolls) under the condition that the material is raised to the up-loop roll at a constant pneumatic condition, the roof roll reduces the load by the motor load. Will receive.

In other words, the load is concentrated on the rotating shaft of the up-roll roll as a load on the up-roll roll in response to the tensile force of the rolling roll before and after, resulting in rotation failure and premature wear. .

In addition, due to the tensile elasticity, the loop shape is formed into an unstable waveform due to the up-and-down repeating elastic force of the up-loop roll, and the shaking phenomenon of the material is increased, and conversely, when the loop size of the front and rear rolling rolls is largely formed (excessive loop) This further increases the loop shape of the up-roll.

Such vibration of the material causes rotational load of the up-roll roll and premature wear of the roll surface part, and excessive loops cause material defects and deviations in the production diameter, resulting in deterioration of rolling quality.

In addition, if the up loop size is out of the scanner detection range due to the above cause, the up loop control of the material itself becomes impossible.

And the conventional loop device configuration including the up-roll roll is a circular guide and a straight guide is arranged at regular intervals, the front and rear rolls are arranged on the mill stand and guides the material to one side back and forth toward the rolling rolls. When the vibration occurs, the material is pulled in both directions inside the circular guide, and the circular guide wear and the material bonding defect are generated.

As described above, the conventional structure has problems such as poor rotation and early wear of the roll surface part due to breakage of the up-roll roll shaft bearing and a problem that the loop change becomes more severe.

Accordingly, the present invention has been made to solve the above problems, the object of which is the vertical and horizontal swing operation of the up-loop roll to be synchronized with the shape of the material loop changes according to the rolling conditions horizontal, vertical form under a constant pressure of the pneumatic cylinder It is to provide a wire rod up-roll control device that can be freely operated and guides the material to the center even when the loop changes.

In addition, the present invention can be freely rotated by distributing the rotational force, excessive load applied to the up-roll roll rotating part, to prevent the unstable up-loop shape by recognizing the rotation state and to make the loop control more easily to prevent defective products of the wire rod product It is another object to provide a wire rod up-roll control device that can be prevented.

In order to achieve the above object, the present invention provides an up-loop roll for performing the up-loop operation, a roll holder for rotatably supporting the up-loop roll, and a pneumatic pressure for rotating the roll holder connected to the roll holder. It includes a scanner for detecting the up-loop state of the cylinder and the wire rod, it is configured to adjust the pressure of the pneumatic cylinder in accordance with the detection signal of the scanner.

Accordingly, through the scanner, if the wire rod is an excessive loop, the pressure of the pneumatic cylinder is reduced, and in the case of the tension loop, the pressure of the pneumatic cylinder is increased to maintain the loop formation uniformly.

Preferably in accordance with the control operation of the pneumatic cylinder and the speed of the forward and backward rolling rolls of the up-loop roll in accordance with the signal of the scanner.

In addition, the present invention has a structure in which the up-up roll is connected to the roll holder via a multi-point roller to distribute the load.

In addition, the present invention may further include a buffer means that is connected to the bottom of the roll holder to buffer the load applied to the up-roll roll.

In addition, the present invention may further include a detection means for detecting the rotation state of the up-loop.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 3 is a perspective view showing a wire rod up-roll control device according to an embodiment of the present invention, Figure 4 is a perspective view of a part of the structure of the wire up-up roll control device according to an embodiment of the present invention, Figure 5 4 is an exploded perspective view of FIG. 4, and FIG. 6 is a cross-sectional view of FIG. 4 according to the present invention.

According to the above drawings, the wire rod up-loop control device according to the present embodiment is an up loop for load (tension) control of the hot rolled material (S) in the intermediate and finishing rolling end during the wire rod and bar rolling In order to perform the operation, the parallel rolls are positioned at the starting point and the ending point of the up loop of the material is formed between the front and rear rolling rolls (100a, 100b), and the parallel rolls (30, 30 ') Up and down roll 100 for controlling the lifting and lowering of the material in the center corresponding to the up and down, a roll holder 102 for rotatably supporting the up loop roll, and a pneumatic cylinder connected to the roll holder to rotate the roll holder ( 104), the scanner 20 which detects the material passing between the parallel rolls and sends the up-loop roll up and down operation and the loop position as an electrical signal, and the turning force of the pneumatic cylinder based on the signal of the scanner. Regulating pneumatic The load distribution unit is disposed between the control unit and the roll holder 12 and the up-roll roll 100 to distribute the load of the up-roll roll, and is connected to the bottom of the roll holder to apply the load applied to the up-roll roll. A buffer means adapted to be buffered, and a detection means for detecting a rotation state of the up-loop.

First, looking at the up-roll roll and its periphery installation structure, wire rod up-up roll roll 100 is the front rear roll (100a, 100b) is disposed on the mill stand (100S) as shown in the entire loop state in FIG. And circular guides 10 and 10 'and straight guides 11 and 11' for guiding the material s to one side back and forth toward the rolling rolls 100a and 100b are arranged at regular intervals, and the circular guides 10, On the side of 10 '), parallel rolls 30 and 30' for the up-loop guide of the wire rod are fixedly installed in the upper and rear upper and lower sides through the fixing holes 31 and 31 ', and the up-loop of the present invention in the lower center thereof. The roll 100 is disposed.

And one side of the scanner 20 for interlocking the pneumatic cylinder 104 for rotating the up-roll roll 100 by detecting the loop size is installed.

Here, the control unit is a controller (CON) for controlling the driving pressure of the pneumatic cylinder 104 by calculating the signal of the scanner 20 and the scanner for checking the loop size, the pneumatic cylinder applied to the pneumatic cylinder in accordance with the signal of the controller Adjuster 104S for adjusting.

In addition, the buffer means is composed of a shock absorber 110 equipped with a spring (SP) located in the lower portion of the up-roll roll to absorb the up-roll roll (100) swing motion impact.

On the other hand, the entire roof equipment arrangement up-up roll device supports the roll holder 102, the roll 100 and the holder 102, the center of the up-up roll roll having a V groove and fixedly supported by turning it Attached to one side, the pivot central axis of the roll 100 is composed of a support 103 having a coupling structure with a pin 101, and is composed of a pneumatic cylinder 104 which is a pivot force means at the end of the holder 102. do.

Here, the load distribution unit is rotatably installed through the drum 106 installed on the holder 102 and the multi-faced rollers 107R-1, 2, and 3 contacting the inner circumferential surface of the drum at three points. And a roll shaft 105 on which 100 is installed.

The coupling center through hole 101H of the up-up roll 100 is formed with grooves 101H-1, 101H-2, 101H-3, and 101H-4 in the inner circumferential outer four directions as shown in FIG. In combination with the irregularities (105a-1, 2, 3, 4) of) is configured to prevent the roll rotation relaxation.

The drums 106 and 106 ', which are formed on both sides of the above roll shaft and have a groove R in the circumferential direction of the inner surface, are formed in a stepped shape with a connector having a large diameter 106a and a small diameter 106b. The roll shaft 105 coincides with the through hole large diameter 106a and the small diameter 106b by forming an assembly at both ends.

In addition, the inner circumference has grooves (107H-1, 107H-2, 107H-3, 107H-4), and the rollers (107R-1, 107R-2, 107R-3), which are rotated freely at the outer circumference, are triangular cones. The multi-faceted roller body 107, 107 'forming a combination in the form of both ends of the predetermined distance of the rotary shaft 105 is coupled to the concave-convex portion (107H-1, 2, 3, 4), but the groove of the drum (R) and the multi-faceted rollers 107R-1, 107R-2, 107R-3 are externally coupled to the inside of the drums 106, 106 'by three fixing bolts 107B.

In addition, the groove (R) and the multi-faceted rollers (107R-1, 107R-2, 107R-3) are inscribed in the lubrication inner cylinder (106g, 106g ') and hose (GR, GR') so that rotation is desired, respectively. (106, 106 ') is coupled to the outer periphery, and both ends of the roll shaft 105 as shown in Figure 9 through the cooling water through holes (105h, 105h') in the form of radiation in the center of the center hole (100C, 100C ') and the end The cap is airtight.

On the other hand, the detecting means is provided in the cooling water through holes 108w and 108w 'installed in the drums 106 and 106', the cooling water hoses installed at the inlet and the outlet of the through holes, and the cooling water flows in the radial direction to the roll shaft 105. Cooling water through holes 105h and 105h 'are installed through the hose and selectively communicate with the through holes according to the rotation of the roll shaft, and the positions are changed according to the amount of cooling water flow rate and the water pressure difference. It includes a pro switch (S / W) for applying a change amount to the controller.                     

In addition, the inner cylinder (108h, 108h ') is formed in the center and the outer peripheral end (108T) is inserted into the bidirectional large diameter holes (106H, 106H') of the drum (106, 106 ') is formed into the groove (R) and at the same time inserted coupling It is configured to easily maintain the airtight in the form and provided with a two-stage sealing plates (108, 108 ') formed of the inner cylinder (108h, 108h') and the cooling water through holes (108W, 108W ') vertically in the outer periphery fixed bolt Cooling water through holes 105h and 105h 'formed of both ends of the shaft 105 and the multi-sided roller body portion 107 are configured to be coupled to the large-diameter orifice 106a at one end of the drum 106 and 106' by 108b. , 107 ') is sealed in two stages.

The cooling water through holes 108W and 108W 'of the two-stage sealing plates 108 and 108' and the radiation cooling water through holes 105h and 105h 'serving as both ends of the shaft 105 are perpendicular to the transverse direction of the axis. When matched, the flow path is formed and the connected coolant hoses (HOSE) are connected to the inlet and outlet (W, W '), but the position is changed depending on the amount of cooling water flow through the outlet flow hose (W') and the pressure difference Pro switch (S / W) signaling device is configured to be connected to the controller (CON).

The combination of the roll holder 100, which is configured as described above, is integrated with the drums 106 and 106 'at both ends, so that the structure of the integrated holder 102 is mounted on one side of the lower end of the roof device and has a space 103H at the center. (103) coupled to the pin 101 axis of the one end of the end member plate (102-1) formed in a curved shape to be coupled, but the front member plate one end end 102W to configure the same weight as the roll (100) assembly ) Was configured to protrude in a curved direction to the rear end, so that the center of gravity of the pin shaft 101 was coincided.

Hereinafter will be described the operation and embodiment of the present invention configured as described above.                     

In FIG. 9, when the material S passing in a straight line is connected to the front and rear parallel rolls 30 and 30 'guide and the rolling rolls 100a and 100b, the power of the pneumatic cylinder 104 depends on the signal of the scanner 20. Synergize the material through the rotation of the up-roll roll (100).

According to the above operation, the material is made of a streamlined loop centered on the surface of the roll 100 surface, and the holder 102 is curved along the axis of the pin member 101 of the support member 102-1 and the support 103. Material (S) is to achieve a turning action in the horizontal, vertical form.

In addition, the loop material (S-> S ') formed as described above has a streamlined shape on front and rear rolling rolls (100a and 100b) according to rolling conditions, and the change of loop formation (S' (S'-1: over-loop, S '(S '-2: tension loop), the loop form of the scanner 20 controls the magnitude of the pneumatic pressure applied by the up-roll roll 100 pneumatic cylinder controller (CON).

That is, when the excessive loop (S'-1) is made, the pneumatic pressure is reduced by the pneumatic regulator 104S associated with the controller (CON) and at the same time, the loop shape is normal due to the deceleration action of the forward and backward rolling rolls (100a, 100b). In the form S '.

On the contrary, when the tension loop S'-2 is formed, the pneumatic pressure is increased by the pneumatic regulator 104S associated with the controller CON, and the loop shape is normal due to the acceleration action of the forward and backward rolling rolls 100a and 100b. In the form S '.

This action prevents the formation of conventional unstable loop waveforms and reduces the load on the rotating shaft 105 of the up-loop roll 100, and at the same time makes loop formation easier, as well as reducing the front and rear rolling rolls 100a and 100b. Simultaneously with the up-loop roll 100 surface wear is reduced.                     

On the other hand, when the revolving action of the up-roll roll 100, the pivoting action centered on the pin shaft 102P with one side end portion 102W of the linear member plate 102-1 and the support 102 is vertical and horizontal (S). ) Ascending and descending, the weight of the roll 100 assembly and the weight of the one side end portion 102W of the linear member plate are proportional to each other in a state where the center of gravity is matched (the weight of the roll assembly as much as the weight of the protrusion 102W at the center of the pin 101). Shock absorption by the weight of the protrusion when the weight is supported by falling in the reverse direction) Shock absorber and the outer loop of the up-up roll 100 to the shock absorber 110 equipped with the spring (SP) at the end of the roll holder 102 The material tip transport along the V-groove is transported to the vertex.

In FIG. 8, the three-point rollers 107R-1, 107R-2, and 107R-3 in the circumferential direction are subjected to a heavy load on the rotating shaft 105 generated when the large diameter material is raised onto the up-up roll 100. At the same time, the inner diameter groove (R) formed by the large diameter through hole (106H) of the drum (106, 106 ') is rotated to reduce the rotational speed of the conventional single shaft (105) and at the same time in the circumferential direction of the groove (R). It rotates precisely in the lubrication slot feeding state and absorbs the overload of the high speed rotation state which is the characteristic of the wire loop process.

In addition, in FIG. 9, the cooling water W of the inlet shaft communicates with the through hole 108W of the two-stage sealing plate 108, and has one radiation through hole 105h formed in the shaft 105 which is rotated as the material progresses. When 105h-1, 105h-2, 105h-3, and 105h-4 coincide with the through hole 108W, the cooling water W passes through the through hole 108W 'of the two-stage sealing plate on the outlet side. Will work.

Here, the pro switch (S / W) signal device is provided with an electromagnet (N pole) in a direction opposite to the fluid flow, so that the electromagnet (S pole) is transferred to the electromagnet (N pole) by the cooling water (W) flowing through the water flow. Will be pushed out of the magnetic force.

Therefore, in the state in which the axis 105 is normally rotated, the radiation through holes 105h, 105h-1, 105h-2, 105h-3, and 105h-4 are selectively connected to the through holes 108W and 108W 'at regular intervals. By achieving a constant amount of cooling water (W '), the position of the electromagnetic pole (S pole) of the pro switch (S / W) signal device is located at the center line (0) of the pro switch (S / W) signal device. Accordingly, it is confirmed that the material transfer state of the up-roll roll 102 is in a normal state.

On the other hand, when the rotating shaft 105 is not rotated, one radiation through hole 105h, 105h-1, 105h-2, 105h-3 is the two-stage sealed plate through hole 108W, 108W '. Formed in a state inconsistent, the electrode (S pole) is closely attached to the electromagnet (N pole) or the two-stage sealed plate through hole (108W, 108W ') and the radiation through hole (105h, 105h-1, 105h) of the shaft. -2, 105h-3 is matched and a large amount of coolant (W ') is passed through, so that the electromagnet (S pole) sticks to the electromagnet (N pole) (-1 position) or is pushed out (position 1) When the rotation stop signal is applied to the controller CON, the rotation state of the wire rod rolls 100 at various positions can be determined and determined for each position.

According to the wire rod up-roll roll control device according to the present invention as described above, in the up-roll roll descending state, the back end roll of the material end portion is stably and accurately conveyed, and also the loop state of the large diameter material through the distribution of load stress generated on the rotating shaft. It is precise and easy to improve the wire quality, as well as increase the error rate, and in particular, it is possible to prevent the occurrence of mass defects by judging the up-loop rotation state by position at an early stage.

In addition, it is possible to produce a high quality product by making loop formation easier by preventing the unstable loop waveform formation of the related art.

Claims (4)

Parallel rolls positioned at the starting and ending points at which the up loops of the material are formed between the front and rear rolling rolls, and up-up rolls for controlling the lifting and lowering of the material at the centers corresponding to the parallel rolls. A roll holder for rotatably supporting the roll, a pneumatic cylinder connected to the roll holder for rotating the roll holder, and a material passing between the parallel rolls to detect the up-loop roll lifting operation and the loop position. A control unit for adjusting the turning power pneumatic of the pneumatic cylinder based on the signal of the scanner, and a load distribution unit installed between the roll holder and the up-roll roll to distribute the load of the up-roll roller; , The load dispersing unit includes a drum installed on the roll holder, a multi-sided roller arranged in a plurality of the inner side of the drum and contacting an inner circumferential surface thereof, and a roll shaft rotatably installed through the multi-sided roller and provided with the up-roll roll. Wire rod up-roll control device characterized in that. The controller of claim 1, wherein the controller is configured to control a driving pressure of the co-cylinder by calculating a signal of the scanner for checking a loop size, and a controller for adjusting the air pressure applied to the co-cylinder according to the signal of the controller. Including, in the case of an excessive loop lowering the air pressure applied to the pneumatic cylinder, the wire rod up-roll control device characterized in that for increasing the pneumatic pressure applied to the pneumatic cylinder. delete According to claim 1, wherein the cooling water through hole is provided in the drum, the cooling water hose is installed in the inlet and the outlet of the through hole, the cooling water hose is passed through the roll shaft at a predetermined angle in the radial direction through the rotation of the roll shaft A coolant through hole selectively connected to the through hole, and a position of the up-to-roll roll installed on the roll shaft, including a pro-switch installed on the hose to change the position according to the coolant water flow rate and the water pressure difference, and to apply the change amount to the controller. Wire rod up-roll control device further comprises a detection means for detecting a rotation state.

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