KR20240009093A - Continuous cast segment with device for manufacturing roll and control method thereof - Google Patents

Abstract

The present invention relates to a playing machine segment equipped with a roll processing device and a control method thereof, which measures the alignment value of the alignment state of the upper guide roll and the lower guide roll installed separately from the upper frame and the lower frame within the playing machine segment. It is inserted between the upper guide roll and the lower guide roll with an alignment value measurement unit and a polished surface formed on the upper and lower surfaces, and a plurality of unit link panels are rotatably supported in multiple segments, and the unit link panel is connected to the upper guide roll. And a link panel unit equipped with a position adjustment unit capable of adjusting the position of the grinding surface in response to the alignment state of the lower guide roll, the step of raising the upper frame upward based on the lower frame of the playing machine segment, Roll processing including a link panel portion in which a polished surface is formed on the upper and lower surfaces, and a plurality of unit link panels are rotatably supported in multiple segments, with the gap between the upper guide roll and the lower guide roll of the lower frame expanded. Inserting the device, aligning the grinding surface of the roll processing device to correspond to the alignment state of the upper guide roll and lower guide roll, rotating the upper guide roll and lower guide roll, and It includes the step of moving the guide roll downward and polishing the surfaces of the upper guide roll and the lower guide roll through the polishing surface of the link panel portion.

Description

Caster segment equipped with roll processing device and its control method {CONTINUOUS CAST SEGMENT WITH DEVICE FOR MANUFACTURING ROLL AND CONTROL METHOD THEREOF}

The present invention relates to a playing machine segment equipped with a roll processing device, and more specifically, to a playing machine segment equipped with a roll processing device for grinding and aligning the upper and lower guide rolls without disassembling the guide roll of the playing machine segment, and a control method thereof. It's about.

In general, the continuous casting process involves injecting molten steel into a mold with a certain internal shape and continuously drawing the cast iron solidified within the mold to the bottom of the mold to manufacture semi-finished products of various shapes such as slabs, blooms, billets, beam blanks, etc. It is a process.

The schematic configuration of a general continuous casting machine (hereinafter referred to as 'continuous casting machine') in which this continuous casting process (hereinafter referred to as 'continuous casting process') is performed is as follows with reference to FIG. 1.

A typical casting machine includes a ladle (1) in which molten steel refined in the steelmaking process is stored, a tundish (2) in which molten steel is supplied and stored through an injection nozzle connected to the ladle (1), It includes a mold (3) that receives the molten steel stored in the tundish (2) and initially solidifies it into a certain shape.

In addition, a cooling line is provided at the lower part of the mold 3 and in which a plurality of segments 5 are continuously arranged to perform a series of forming operations while cooling the unsolidified cast slab 4 drawn from the mold 3. 6) Includes.

Here, the segment 5 includes an upper frame 51 and a lower frame 52 spaced apart vertically, and the upper frame 51 and the lower frame 52 have a plurality of guide rolls 53 and 54 facing each other. are arranged in order. In addition, the segment 5 includes a tie rod 56 that connects the upper frame 51 and the lower frame 52 in a spaced apart state, and the upper frame 51 to apply a pressing force to the cast plate 4. It includes a hydraulic cylinder 55 that adjusts the separation distance between the and lower frame 52. The cast slab (4) drawn from the mold (3) is pressurized while passing through the space between the upper frame (51) and the lower frame (52) and solidified through gradual cooling.

Abrasion occurs on the surfaces of the guide rolls 53 and 54 of the guide roll assembly during the playing process. Therefore, if excessive wear of the guide rolls (53, 54) occurs, problems such as poor rotation of the guide rolls (53, 54) will occur. Therefore, the segment (5) including the guide rolls (53, 54) must be replaced regularly. It is maintained, and in particular, the guide rolls (53, 54) in the segment (5) that are worn beyond specifications must be replaced.

When replacing the guide rolls 53 and 54, the upper frame 51 within the segment 5 must be disassembled and the guide rolls 53 and 54 must be replaced one by one.

However, when maintaining the segment 5 for replacement of the conventional guide rolls 53 and 54, the upper frame 51 is disassembled, a spare guide roll is assembled inside the segment 5, and a spare guide roll ( 53,54) Additional work, such as adjusting the gap and aligning the guide rolls, had to be done together, so there was a problem in that the playing process was delayed and productivity was reduced.

Republic of Korea Patent Publication No. 0646627 (2006.11.09)

Therefore, the object of the present invention is to polish the surface of the guide roll in a state where the position of the polishing surface is adjusted to correspond to the alignment state according to the adjusted spacing of the guide roll within the segment without disassembling the upper frame of the playing machine segment. The purpose is to provide a caster segment equipped with a roll processing device that can be used.

The object of the present invention is not limited to the object mentioned above, and other objects and advantages of the present invention that are not mentioned can be understood through the following description and will be more clearly understood by the examples of the present invention. Additionally, it will be readily apparent that the objects and advantages of the present invention can be realized by the means and combinations thereof indicated in the patent claims.

In order to solve the above problems, the present invention provides an alignment value measurement unit and an upper and lower surface that measure the alignment value of the upper and lower guide rolls installed separately from the upper and lower frames within the playing machine segment. It is inserted between the upper guide roll and the lower guide roll with a polished surface formed on it, and a plurality of unit link panels are rotatably supported in multiple segments, and the unit link panels are aligned with the upper guide roll and the lower guide roll. Provided is a playing machine segment equipped with a roll processing device, including a link panel section equipped with a position adjustment unit correspondingly capable of adjusting the position of the grinding surface.

This device allows the surface of the guide roll to be polished with the position of the polishing surface adjusted to correspond to the alignment state according to the adjusted spacing of the guide roll within the segment, thereby allowing the surface of the guide roll to be polished without disassembling the upper frame. The repair process can be shortened without replacement work, which can be expected to improve casting productivity and the quality of cast steel.

The link panel unit may be rotatably fixed on its axis with the protrusions and grooves arranged on the same line along the longitudinal direction of each unit link panel being alternately connected to each other.

The position adjustment unit is a device for adjusting the alignment of the link panel according to the alignment of the upper and lower guide rolls, and is a gearbox equipped with a servomotor and a rotating worm gear inside to transmit the driving force of the servomotor. It may include a drive shaft that is connected to a gearbox and rotates by receiving the driving force of the servomotor, and a screw jack that is connected to the drive shaft and has a spindle that can move forward and backward by the driving force of the servomotor.

A method of controlling a playing machine segment equipped with a roll processing device according to an embodiment of the present invention includes the steps of raising the upper frame upward based on the lower frame of the playing machine segment, the upper guide roll of the upper frame and the lower guide of the lower frame In a state in which the gap between the rolls is expanded, a grinding surface is formed on the upper and lower surfaces, and a roll processing device is inserted including a link panel portion in which a plurality of unit link panels are rotatably supported in multiple segments, and an upper guide; Aligning the grinding surface of the roll processing device to correspond to the alignment state of the roll and the lower guide roll, rotating the upper guide roll and lower guide roll, and moving the upper guide roll and lower guide roll downward to form a link panel. It may include the step of polishing the surfaces of the upper guide roll and the lower guide roll through the negative polishing surface.

The method may further include controlling the position adjustment unit according to the degree of wear of the upper guide roll and the lower guide roll to precisely adjust the link panel portion, and maintaining precise alignment by adjusting the gap error between the upper guide roll and the lower guide roll. there is.

According to the playing machine segment equipped with the roll processing device according to the present invention and its control method as described above, the position of the polishing surface is adjusted to correspond to the alignment state according to the adjusted spacing of the guide rolls in the playing machine segment. By allowing the surface of the guide roll to be polished, the repair process can be shortened without disassembling the upper frame and replacing the guide roll, which can be expected to improve casting productivity and the quality of the cast piece.

In addition to the above-described effects, specific effects of the present invention are described below while explaining specific details for carrying out the invention.

Figure 1 is a diagram schematically showing a typical playing machine segment.
Figure 2 is a cross-sectional view showing a caster segment according to the prior art.
Figure 3 is a cross-sectional view schematically showing a playing machine segment equipped with a roll processing device according to the present invention.
Figure 4 is a plan view showing a roll processing device according to the present invention.
Figure 5 is a side view showing a roll processing device according to the present invention.
Figure 6 is a side view showing the operating state of the roll processing device according to the present invention.
Figures 7 to 10 are diagrams showing the operating state of a player segment equipped with a roll processing device according to the present invention.
Figure 11 is a flow chart showing a control method of a player segment equipped with a roll processing device according to the present invention.

The above-mentioned objects, features, and advantages will be described in detail later with reference to the attached drawings, so that those skilled in the art will be able to easily implement the technical idea of the present invention. In describing the present invention, if it is determined that a detailed description of known technologies related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description will be omitted. Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the attached drawings. In the drawings, identical reference numerals are used to indicate identical or similar components.

Although first, second, etc. are used to describe various components, these components are of course not limited by these terms. These terms are only used to distinguish one component from another component, and unless specifically stated to the contrary, the first component may also be a second component.

Hereinafter, the “top (or bottom)” of a component or the arrangement of any component on the “top (or bottom)” of a component means that any component is placed in contact with the top (or bottom) of the component. Additionally, it may mean that other components may be interposed between the component and any component disposed on (or under) the component.

Additionally, when a component is described as being “connected,” “coupled,” or “connected” to another component, the components may be directly connected or connected to each other, but the other component is “interposed” between each component. It should be understood that “or, each component may be “connected,” “combined,” or “connected” through other components.

Figure 3 is a cross-sectional view schematically showing a playing machine segment equipped with a roll processing device according to the present invention.

Referring to Figure 3, the playing machine segment 100 according to the present invention includes an upper frame 110 on which a plurality of upper guide rolls 111 are installed and a plurality of lower guide rolls spaced apart from each other below the upper guide roll 111. It includes a lower frame 120 on which (121) is installed.

In each of the upper frame 110 and the lower frame 120, a plurality of upper guide rolls 111 and lower guide rolls 121 that guide cast steel (not shown) are arranged to face each other. The upper and lower guide rolls 111 and 121 are arranged in a direction that intersects the transport direction of the cast steel, and each of the upper and lower guide rolls 111 and lower guide rolls 111 and 121 is provided with a plurality of bearing housings (not shown) at intervals to rotate for transport of the cast steel. It can support the upper and lower guide rolls (111,121). The upper and lower guide rolls 111 and 121 are in contact with the surface of the cast steel to apply a pressing force to the cast steel for forming the cast steel.

In addition, the caster segment 100 includes a tie rod 130 that connects the upper frame 110 and the lower frame 120 in a spaced apart state, and, as described above, the upper frame to apply a pressing force to the cast steel. It includes a hydraulic cylinder 140 and a screw jack 150 that adjust the gap between 110 and the lower frame 120.

The gap between the upper and lower guide rolls 111 and 121 can be adjusted by moving the upper frame 110 up and down using the hydraulic cylinder 140 and the screw jack 150.

Meanwhile, among the plurality of upper guide rolls 111 arranged in a direction intersecting the transport direction of the cast steel through which the cast steel is guided, the position of the upper guide roll (111) in contact with both edges of the cast steel is located at the center of the cast steel. By forming the upper guide roll 111 in a different position, a pressing force can be uniformly applied to the surface of the cast steel.

In an embodiment of the present invention, based on the guide path along which the cast steel is guided, the position of the upper guide roll 111 in contact with both edges of the cast steel is greater than the position of the upper guide roll 111 in contact with the center of the cast steel. By adjusting the gap between the upper and lower guide rolls 111 and 121 by forming them high, the central portion of the plurality of upper guide rolls 111 is formed in a circular arc shape forming a downward curve.

In an embodiment of the present invention, the arrangement of the lower guide roll 121 may be formed in the same structure as that of the upper guide roll 111. That is, based on the guide path along which the cast steel is guided, the position of the lower guide roll 121 in contact with both edges of the cast steel can be formed higher than the position of the lower guide roll 121 in contact with the center of the cast steel. . That is, the central portion of the plurality of lower guide rolls 121 is formed in a circular arc shape forming a downward curve.

In the drawing, the plurality of upper and lower guide rolls 111 and 121 are shown as being formed in an arc shape, but in reality, they are parallel, and an alignment operation for adjusting the position of the polishing surface 230 of the roll processing device 200, which will be described later, is explained. In order to do this, it is shown differently from reality.

When performing repeated playing operations multiple times over a long period of time using a general playing machine segment 100, the surface of the upper guide roll 111 and lower guide roll 121 is subject to wear as it comes into contact with the cast metal conveyed at high temperature and high speed. phenomenon occurs. When the wear of the upper and lower guide rolls (111, 121) is minimal, that is, when the hard facing layer remains and it is necessary to open and reuse the surface, the surface of the guide rolls (111, 121) is polished and the upper and lower guides are simultaneously polished. A playing machine segment 100 equipped with a roll processing device 200 capable of aligning rolls 111 and 121 is disclosed.

As can be seen from the drawing, a roll processing device ( 200) is inserted.

The roll processing device 200 is a device for grinding and aligning the surfaces of the upper and lower guide rolls 111 and 121 in the playing machine segment 100 while inserting the upper frame 110 between the upper and lower guide rolls 111 and 121 without disassembling it. am.

Figure 4 is a plan view showing the roll processing device according to the present invention, Figure 5 is a side view showing the roll processing device according to the present invention, and Figure 6 is a side view showing the operating state of the roll processing device according to the present invention. .

Referring to Figures 4 and 5, the roll processing apparatus 200 consists of a plate-shaped link panel portion 210 on which a plurality of unit link panels 211 are rotatably supported in multiple segments.

Specifically, the link panel unit 210 is composed of a combination of unit link panels 211 in which protrusions 213 and grooves 214 are regularly arranged on both sides of the rotation pin unit 201. However, the outer surfaces of the unit link panels 211a and 211b located in the first and last rows have a straight shape without protrusions 213 and grooves 214. The protrusions 213 and grooves 214 of each unit link panel 211 are alternately positioned on the same line along the longitudinal direction.

The link panel unit 210 may have the rotation pin unit 201 fixed on its axis in a state in which the protrusions 213 and grooves 214 of each unit link panel 211 are alternately connected to each other. Accordingly, the link panel unit 210 allows the unit link panel 211 to be rotated into multiple segments around the rotation pin unit 201.

The protrusion 213 of the unit link panel 211 is rotatable by the rotation pin 201 when inserted into the groove 214 of the neighboring unit link panel 211. In addition, the groove portion 214 of the unit link panel 211 is rotatable by the rotation pin portion 201 when inserted into the protrusion 213 of the neighboring unit link panel 211.

As shown in FIGS. 5 and 6, the link panel unit 210 has a polishing surface 230 formed on the upper and lower surfaces thereof for polishing the surfaces of the upper guide roll 111 and lower guide roll 121, respectively. do. The polishing surface 230 may be a grinding wheel that performs grinding work so that the upper and lower guide rolls 111 and 121 rotate while grinding.

In addition, the roll processing apparatus 200 according to the present invention further includes an alignment value measuring unit (not shown) that measures the alignment value of the upper and lower guide rolls 111 and 121.

Meanwhile, inside the link panel unit 210 of the roll processing device 200, the position of the polishing surface 230 is adjusted to correspond to the alignment state according to the adjusted spacing of the upper and lower guide rolls 111 and 121 in the segment 100. A position adjustment unit 220 that can be installed is installed.

The position adjustment unit 220 is a device for adjusting the alignment state of the link panel unit 210 according to the alignment state of the upper and lower guide rolls 111 and 121, and includes a servomotor 221 and a worm gear (not shown) rotating inside. It includes a gearbox 222 that is provided and transmits the driving force of the servomotor 221 to the drive shaft 223.

In addition, the position adjustment unit 220 is connected to a drive shaft 223 that is connected to the gearbox 222 and rotates by receiving the driving force of the servomotor 221, and is connected to the drive shaft 223 to receive the driving force of the servomotor 221. It includes a screw jack 224 equipped with a spindle 225 that can be moved forward and backward.

The drive shaft 223 may be connected to be interconnected without sagging via a plurality of couplers 226 supported at a predetermined height from the floor surface.

In the operation of the position adjustment unit 220 configured as described above, first, the alignment value measurement unit measures the alignment value of the upper and lower guide rolls 111 and 121.

The alignment value for the alignment status of the upper and lower guide rolls 111 and 121 measured by the alignment value measurement unit is transmitted to the roll alignment determination unit (not shown). The roll alignment judgment unit that receives the alignment value converts the alignment value into a motor drive signal that matches the movement amount of the spindle 225 of the screw jack 224 and transmits it to the servo motor 221. And the servomotor 221 rotates so that the spindle 225 can move forward and backward according to the movement amount of the screw jack 224 with respect to the spindle 225, which is calculated based on the received signal for the transmitted alignment value.

The position adjustment unit 220 installed in the link panel unit 210 can adjust the rotation amount of the unit link panel 211 of the link panel unit 210 by optimally matching the alignment state of the upper and lower guide rolls 111 and 121. It comes true.

Referring to FIG. 6, the roll processing device 200 is disposed between the upper and lower guide rolls 111 and 121 and can respond to the alignment state of the upper and lower guide rolls 111 and 121.

The roll processing device 200 inserted between the upper and lower guide rolls 111 and 121 positions the polishing surface 230 to correspond to the alignment state according to the adjusted spacing of the upper and lower guide rolls 111 and 121 by the position adjustment unit 220. can be adjusted.

Figures 7 to 10 are diagrams showing the operating state of the playing machine segment 100 equipped with the roll processing device 200 according to the present invention.

The operation of the player segment 100 equipped with the roll processing device 200 according to the present invention will be described with reference to the accompanying drawings.

With the link panel portion 210 of the roll processing device 200 according to the present invention aligned to match the alignment state of the upper and lower guide rolls 111 and 121, the upper and lower guide rolls 111 and 121 are polished through a grinding operation.

As shown in Figure 7, the upper frame 110 of the player segment 100 is raised upward from the tie rod 130. That is, the upper guide roll 111 installed on the upper frame 110 is moved upward to expand the gap between the upper and lower guide rolls 111 and 121.

As shown in FIG. 8, the roll processing device 200 is inserted between the upper and lower guide rolls 111 and 121 using a crane such as a crane while the gap between the upper and lower guide rolls 111 and 121 is expanded.

To this end, a support unit 300 is installed on one side of the caster segment 100 to maintain the support state of the roll processing device 200. The support unit 300 can stably support the roll processing device 200.

Next, the polished surface 230 of the link panel portion 210 of the roll processing device 200 is aligned to correspond to the alignment state of the upper and lower guide rolls 111 and 121.

To this end, the alignment value measurement unit measures the alignment value of the upper and lower guide rolls 111 and 121, and a measurement signal for the alignment value is transmitted to the roll alignment determination unit. The roll alignment determination unit converts the alignment value of the upper and lower guide rolls 111 and 121 into a power control signal and transmits it to the servomotor 221 of the position adjustment unit 220 installed inside the link panel unit 210.

The roll alignment determination unit may control the link panel unit 210 to maintain an alignment state corresponding to the gap between the upper and lower guide rolls 111 and 121 by controlling the servomotor 221 through a power control signal.

The driving force of the servomotor 221 of the position adjustment unit 220 operates the screw jack 224 through the gearbox 222 and the drive shaft 223, and the driving force of the screw jack 224 calculated by the roll alignment determination unit The spindle 225 of the screw jack 224 in the link panel unit 210 is advanced by a predetermined distance according to the amount of movement of the spindle 225.

When the spindle 225 of the screw jack 224 moves forward by the calculated movement amount, the unit link panel 211 of the link panel unit 210 rotates via the rotation pin unit 201.

As the unit link panel 211 rotates via the rotation pin part 201 by the forward motion of the spindle 225 of the screw jack 224, the entire link panel part 210 guides the upper and lower parts through a rising or falling motion. Convert to a form corresponding to the alignment state of the rolls 111 and 121. At this time, the roll alignment determination unit can precisely control the spindle 225 of the screw jack 224, thereby enabling precise polishing of the upper and lower guide rolls 111 and 121.

As shown in FIG. 9, the upper and lower guide rolls 111 and 121 are rotated simultaneously using the power of the servomotor 221.

As shown in Figure 10, the upper frame 110 of the player segment 100 is lowered and returned to its original position. That is, the upper guide roll 111 installed on the upper frame 110 is moved downward so that the rotating upper and lower guide rolls 111 and 121 contact the roll processing device 200 between the upper and lower guide rolls 111 and 121.

Depending on the degree of wear of the upper and lower guide rolls 111 and 121, the position adjustment unit 220 within the link panel unit 210 is controlled to finely adjust the link panel unit 210 and the gap error between the upper and lower guide rolls 111 and 121 is adjusted to provide precise Maintain alignment.

In this way, in a state in which the link panel unit 210 of the roll processing device 200 is precisely aligned to correspond to the degree of wear of the upper and lower guide rolls 111 and 121, the polished surface 230 of the upper and lower surfaces of the link panel unit 210 is used. The surfaces of the upper and lower guide rolls 111 and 121 can be polished.

Therefore, the present invention facilitates and precisely adjusts the position of the polishing surface 230 of the roll processing device 200 to correspond to the alignment state according to the adjusted spacing of the upper and lower guide rolls 111 and 121 in the playing machine segment 100. By enabling the surface of the upper and lower guide rolls 111 and 121 to be precisely polished, the repair process can be shortened without disassembling the upper frame 110 and replacing the upper and lower guide rolls 111 and 121, thereby improving casting productivity. and the quality of cast steel can be improved.

As described above, the present invention has been described with reference to the illustrative drawings, but the present invention is not limited to the embodiments and drawings disclosed herein, and various modifications may be made by those skilled in the art within the scope of the technical idea of the present invention. It is obvious that transformation can occur. In addition, although the operational effects according to the configuration of the present invention were not explicitly described and explained while explaining the embodiments of the present invention above, it is natural that the predictable effects due to the configuration should also be recognized.

100: segment
110: upper frame
111: upper guide roll
120: lower frame
121: lower guide roll
130: tie rod
140: hydraulic cylinder
150: screw jack
200: Roll processing device
201: Rotating pin part
210: Link panel part
211: Unit link panel
213: protrusion
214: Home Department
220 ; positioning unit
221: Servo motor
222: Gearbox
223: drive shaft
224: screw jack
225: spindle
226: coupler
230: polished surface
300: Support unit

Claims (7)

An upper frame and a lower frame of the playing machine segment in which a plurality of upper guide rolls and lower guide rolls are arranged to face each other;
an alignment value measuring unit that measures an alignment value of the alignment state of the upper guide roll and the lower guide roll; and
It is inserted between the upper guide roll and the lower guide roll with polishing surfaces formed on the upper and lower surfaces, and a plurality of unit link panels are rotatably supported in multiple segments, and the unit link panels are connected to the upper guide roll and the lower guide roll. A playing machine segment equipped with a roll processing device, including a link panel unit equipped with a position adjustment unit capable of adjusting the position of the polishing surface in response to the alignment state of the lower guide roll.
According to paragraph 1,
The link panel part,
A casting machine segment equipped with a roll processing device, in which the rotation pin portion is rotatably fixed to the axis while the protrusions and grooves arranged on the same line along the longitudinal direction of each of the unit link panels are alternately connected to each other.
According to paragraph 1,
The position adjustment unit is,
A device for adjusting the alignment state of the link panel portion according to the alignment state of the upper guide roll and the lower guide roll,
servo motor;
A gearbox equipped with a rotating worm gear inside to transmit the driving force of the servomotor;
A drive shaft connected to the gearbox and rotated by receiving driving force from the servomotor; and,
A screw jack connected to the drive shaft and provided with a spindle that can move forward and backward by the driving force of the servomotor. A player segment equipped with a roll processing device, including a.
Raising the upper frame upward based on the lower frame of the playing machine segment;
With the gap between the upper guide roll of the upper frame and the lower guide roll of the lower frame expanded, polished surfaces are formed on the upper and lower surfaces, and a link panel in which a plurality of unit link panels are rotatably supported in multiple segments Inserting a roll processing device including a unit;
Aligning the polishing surface of the roll processing device to correspond to the alignment state of the upper guide roll and the lower guide roll;
rotating the upper guide roll and the lower guide roll; and
Moving the upper guide roll and the lower guide roll downward to polish the surfaces of the upper guide roll and the lower guide roll through the polishing surface of the link panel portion; a player segment provided with a roll processing device, including; control method.
According to paragraph 4,
The link panel part,
A control method of a playing machine segment equipped with a roll processing device, wherein the rotation pin portion is rotatably fixed on the axis while the protrusions and grooves arranged on the same line along the longitudinal direction of each of the unit link panels are alternately connected to each other.
According to paragraph 4,
A device for adjusting the alignment state of the link panel portion according to the alignment state of the upper guide roll and the lower guide roll,
servo motor;
A gearbox equipped with a rotating worm gear inside to transmit the driving force of the servomotor;
A drive shaft connected to the gearbox and rotated by receiving driving force from the servomotor; and,
A screw jack connected to the drive shaft and including a spindle capable of moving forward and backward by the driving force of the servomotor.
According to clause 6,
Precisely adjusting the link panel unit by controlling the position adjustment unit according to the degree of wear of the upper guide roll and the lower guide roll, and maintaining precise alignment by adjusting the gap error between the upper guide roll and the lower guide roll. A control method of a playing machine segment provided with a roll processing device, further comprising:

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