KR20230157687A - Automatic scrab guiding device and guiding method thereof - Google Patents

Abstract

The present invention relates to an automatic scrap guidance device and guidance method. When the chopper knife of a chopper machine is damaged during a side trimming operation, the direction of the scrap guided by the chopper knife is changed to the normal chopper knife surface, thereby reducing the use period of the chopper knife. It relates to an automatic scrap guidance device and guidance method that can dramatically extend the process to prevent production stoppages for scrap and prevent facility troubles due to damage to chopper knives.

Description

Automatic scrap guiding device and guiding method {Automatic scrab guiding device and guiding method thereof}

The present invention relates to an automatic scrap guidance device and method, and more specifically, to an automatic scrap guidance device and method for guiding edge scrap cut by a side trimmer to a chopper machine.

In general, hot-rolled coils or cold-rolled coils produced through a stainless steel annealing and pickling process undergo trimming with a side trimmer that cuts the edges on both sides of the strip to a specified width before being transferred to the next process.

The edge scrap cut by the side trimmer is sent to the chopper machine for reprocessing. In other words, the edge scrap cut by the side trimmer is made in the form of a long, narrow strip. As the edge scrap continues to progress, it is cut into predetermined unit scraps by the chopper machine, and the unit scrap cut in this way is conveyed into scrap by the conveyor. It is transferred to a storage box and stored.

However, if the chopper knife surface of the chopper machine is damaged during a conventional side trimming operation, the scrap passing through the damaged surface of the chopper knife is piled up on the conveyor in an uncut state, causing a delay in progressing along the conveyor. There was a problem.

In addition, when the above scrap backlog occurs, scrap cutting work must be stopped and the damaged and defective chopper knives of the chopper machine, which are the cause of the backlog, must be replaced. Due to the increase in high-strength steel cutting work, the chopper There was a problem in that knife damage occurred frequently and work productivity was reduced due to frequent line stops. In addition, there was a high risk of worker safety accidents due to chopper knife replacement work.

Republic of Korea Patent Publication No. 2005-0017969 (2005.02.23)

Therefore, the purpose of the present invention is to provide an automatic scrap guidance device and guidance method that can change the direction of the scrap guided by the chopper knife to the normal chopper knife side when the chopper knife of the chopper machine is damaged during side trimming work. there is.

Another object of the present invention is to provide an automatic scrap guidance device and guidance method that can automatically notify the operator of the presence of a damaged chopper knife during side trimming work.

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 achieve the above object, one aspect according to the present invention is an automatic scrap guidance system that can change the direction of the scrap guided by the chopper knife to the normal chopper knife side when the chopper knife of the chopper machine is damaged during the side trimming operation. It is characterized by implementing a device and induction method.

Through this, according to the present invention, it is possible to dramatically extend the usage period of the chopper knife, prevent production stoppage due to scrap, and prevent equipment troubles due to damage to the chopper knife.

According to one embodiment of the present invention, a side trimmer that cuts the edges on both sides of the strip to a prescribed width, a scrap guidance chute that guides the movement of the scrap cut from the side trimmer, and a predetermined amount of scrap guided from the scrap guidance chute. A chopper machine equipped with a chopper knife that cuts into unit scraps, a first sensor unit installed between the upper and lower chopper of the chopper machine and detecting whether the chopper knife is damaged, and a first sensor unit installed in the scrap induction chute. When damage to the chopper knife is detected in the unit, an automatic scrap guidance device including a path change guide unit for changing the movement path of the scrap guided to the scrap guidance chute along the width direction of the scrap guidance chute can be provided.

In addition, according to the present invention, the path change guide unit is connected to a drive motor capable of forward and reverse rotation on the same axis of the drive motor, and a lead screw that rotates in conjunction with the rotation power of the drive motor, and is screwed to the lead screw. , It may include a movable chute that reciprocates along the screw thread in the longitudinal direction of the lead screw as the lead screw rotates, and a guide rod installed on at least one side of the lead screw to guide the reciprocating movement of the movable chute.

Additionally, according to the present invention, the first sensor unit can detect whether the chopper knife is damaged within the width of the moving chute.

In addition, according to the present invention, when the maximum movement position of the mobile chute is reached between the width direction operation intervals of the mobile chute, it further includes a limit sensor that generates a control signal to operate the warning unit to convey damage information of the chopper knife to the operator. can do.

In addition, according to the present invention, the limit sensor is installed on one side of the scrap induction chute, and a second sensor unit that detects the waiting position and operation start position of the mobile chute and a support part on the other side of the scrap induction chute opposite the second sensor unit. It is installed in and may include a third sensor unit that detects whether the maximum movement position of the mobile suit is touched.

According to one embodiment of the present invention, during the trimming operation of the side trimmer, the scrap is passed through the chopper knife of the chopper machine, the detection step of detecting whether the scrap that has passed through the chopper machine is cut, and the cutting state of the scrap are If it is determined to be in an abnormal state, an automatic scrap guidance method can be provided that includes a moving step of moving the moving chute by a set distance along the width direction so that the direction of the scrap can be converted to a normal chopper knife surface.

In addition, according to the present invention, after the movement step, when the maximum movement position of the movement chute is reached between the width direction operation intervals of the movement chute, a control signal is generated to operate the warning unit to convey damage information of the chopper knife to the operator. Step; may include.

According to the present invention of the above-described configuration, when the chopper knife of the chopper machine is damaged during the side trimming operation, the direction of the scrap guided by the chopper knife is changed to avoid the damaged chopper knife surface and switch to the normal chopper knife surface, thereby avoiding the chopper knife surface. It has the advantage of dramatically extending the life of the knife, preventing production stoppages due to scrap, and preventing facility troubles due to damage to the chopper knife.

Additionally, it has the effect of automatically notifying the operator of the presence of a damaged chopper knife during side trimming work.

Additionally, by automatically switching the direction of the scrap guided by the chopper knife, there is an effect of improving work efficiency and ensuring safety compared to conventional manual work.

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.

1 is a schematic diagram showing an automatic scrap guidance device according to an embodiment of the present invention.
Figure 2 is a perspective view showing an automatic scrap guidance device according to an embodiment of the present invention.
Figure 3 is an exploded perspective view showing the induction conversion guide of the automatic scrap guidance device according to an embodiment of the present invention.
Figure 4 is an operational diagram showing the operating state of the automatic scrap guidance device according to an embodiment of the present invention.
Figure 5 is a flow chart showing a scrap induction method using an automatic scrap induction device according to an embodiment of 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.

Below, an automatic scrap guidance device according to an embodiment of the present invention will be described.

Figure 1 is a schematic diagram showing an automatic scrap guidance device according to an embodiment of the present invention, and Figure 2 is a perspective view showing an automatic scrap guidance device according to an embodiment of the present invention.

As shown in FIG. 1, the side trimmer 100 cuts using an upper trimmer knife 110 and a lower trimmer knife 120 that rotate the edges of both sides of the strip passing through the side trimmer 100. do. At this time, a predetermined unit cut by the side trimmer 100 is called an edge scrap (hereinafter referred to as 'scrap'), and may be cut in the form of a long, narrow strip.

Due to the overlap and gap between the upper trimmer knife 110 and the lower trimmer knife 120 of the side trimmer 100, the edge of the strip initially undergoes elastic deformation, and then the upper trimmer knife When it comes into contact with (110) and the lower trimmer knife (120), it undergoes plastic deformation. After this plastic deformation, the edges of the strip are cut as the plastic shear stress increases.

The scrap cut by the side trimmer 100 is moved to the chopper machine 300 including the upper chopper 310 and the lower chopper 320 by the scrap induction chute 200. The upper chopper 310 and lower chopper 320 of the chopper machine 300 have a cylindrical shape with a plurality of chopper knives 311 and 321 formed at intervals on the circumferential surface. The upper chopper 310 and lower chopper 320 of the chopper machine 300 rotate as the chopper knives 311 and 321 engage with each other.

The chopper machine 300 passes scrap between an upper chopper 310 and a lower chopper 320 that rotate in engagement with each other, and cuts the scrap into predetermined units by a plurality of rotating chopper knives 311 and 321.

A scrap guidance chute 200 is provided between the side trimmer 100 and the chopper machine 300 to guide the movement of scrap.

Generally, a scrap induction chute 200 and a chopper machine 300 are installed symmetrically on both edge sides of the strip. Figure 2 shows a scrap induction chute 200 and a chopper machine 300 installed only on one side of the strip, that is, on the left side.

Referring to the drawing, the scrap guiding chute 200 is installed below the side trimmer 100 to guide the scrap cut by the side trimmer 100 to the chopper machine 300. One side of the scrap induction chute 200 is disposed at a location where scrap is discharged from the side trimmer 100, and the other side of the scrap induction chute 200 is disposed at the upper chopper 310 and lower chopper 320 of the chopper machine 300. It can be placed between . Accordingly, the scrap guidance chute 200 is formed with a slope sloping downward from the side trimmer 100 toward the chopper machine 300, so that scrap can move along the slope of the scrap guidance chute 200 by its own weight.

Figure 3 is an exploded perspective view showing the induction conversion guide of the automatic scrap guidance device of the side trimmer 100 according to an embodiment of the present invention.

As shown in Figure 3, the scrap induction chute 200 includes a chute frame 210, a path change guide unit 220, a first sensor unit 230, a second sensor unit 240, and a third sensor unit ( 250).

The chute frame 210 has a U-shaped plate shape in cross section and includes a base portion 211 of a predetermined length and width, and support portions 212 installed to protrude upward at both ends of the base portion 211. do.

The path change guide unit 220 can change the movement path of the scrap discharged from the side trimmer 100 along the width direction of the chute frame 210.

The path change guide unit 220 includes a drive motor 225, a lead screw 222, a moving chute 221, and guide rods 223 and 224.

As the drive motor 225, a PLG (Power Lift Gate) motor or a step motor capable of precise control may be mainly used. The output shaft of the drive motor 225 can be connected to the lead screw 222, and can rotate forward and backward.

The lead screw 222 has threads formed on its outer peripheral surface. One end of the lead screw 222 is connected on the same axis as the output shaft of the drive motor 225 to receive power, and the other end is rotatably coupled to the support portion 212 provided on the chute frame 210 through a bearing, etc. This makes it possible to rotate while maintaining horizontality with the output shaft of the drive motor 225.

The mobile chute 221 has a relatively narrower width than the base portion 211 of the chute frame 210, is seated on the chute frame 210 and is screwed to the lead screw 222, and the lead screw 222 ) can be moved back and forth in the direction of the arrow in FIG. 2 along the longitudinal direction of the lead screw 222 in conjunction with the rotational motion of the lead screw 222. That is, the movable chute 221 can move left and right along the width direction of the chute frame 210.

The guide rods 223 and 224 are disposed on at least one side of the lead screw 222 and are fixed between the supporting parts 212 facing each other.

The guide rods 223 and 224 are installed in parallel through the movable chute 221, and enable the reciprocating movement of the movable chute 221 when the movable chute 221 screwed to the lead screw 222 moves along the thread. Guide. In the embodiment of the present invention, it can be seen that two guide rods 223 and 224 are installed on both sides of the lead screw 222.

The path switching guide unit 220 configured in this way avoids the surface of the damaged chopper knives (311,321) so that when the chopper knives (311,321) of the chopper machine (300) are damaged during the side trimming operation, the scrap discharged is returned to the normal chopper knives (311,321). ) The moving chute 221 can be guided to be guided to the surface.

The first sensor unit 230 is installed between the rotating upper chopper 310 and the lower chopper 320 of the chopper machine 300, and detects the chopper knife of the chopper machine 300 within the width of the moving chute 221. (311,321) can be detected for damage. That is, the first sensor unit 230 is an optical sensor or photo sensor that transmits a detection signal for the cut and uncut state of the scrap by the chopper knives 311 and 321 of the chopper machine 300 to the controller 500. You can.

The first sensor unit 230 detects the state of scrap being cut or not cut by the chopper knives 311 and 321 of the chopper machine 300 within the width of the moving chute and transmits a detection signal to the controller 500. . The detection range of the first sensor unit 230 may naturally be limited to detection only within the width of the moving chute, not the entire width of the chopper machine 300.

The controller 500 transmits damage information of the chopper knives 311 and 321 of the chopper machine 300 to the operator through a warning unit (not shown) such as a light generator or a sound generator, so that the operator can check the damage of the chopper knives 311 and 321. You can control it to perform replacement operations.

The warning unit operates through the second and third sensor units 240 and 250.

In the first sensor unit 230, when adjusting the widthwise operation interval of the movement chute 221, the positions of the damaged chopper knives 311 and 321 of the chopper machine 300 can be determined, and the widthwise operation of the movement chute 221 When the maximum movement position of the movement chute 221 is reached between the intervals, the movement chute 221 may touch the third sensor unit 250.

When the third sensor unit 250 detects a touch to the mobile chute 221, it generates a control signal and operates the warning unit by the generated control signal.

The second sensor unit 240 is installed on one side support part 212 of the chute frame 210, and is the reference position of the mobile chute 221 capable of reciprocating movement on the chute frame 210, that is, the standby position of the mobile chute 221. It may be a limit sensor that detects the starting position of the position and movement chute 221. That is, the second sensor unit 240 may function to set the reference position of the mobile chute 221.

The third sensor unit 250 is a limit sensor that detects whether the maximum movement position of the moving chute 221 on the chute frame 210 is touched. The third sensor unit 250 is installed on the other support unit 212 of the chute frame 210 opposite the second sensor unit 240, so that the movable chute 221 is positioned with respect to the other support unit 212 at the maximum movement position. It can sense what is being touched.

When the touch-related detection signal detected by the third sensor unit 250 is transmitted to the controller 500, the controller 500 sends damage information of the chopper knives 311 and 321 of the chopper machine 300 to the operator through the warning unit. It can be controlled so that the replacement work of the chopper knives (311, 321) can be performed.

Figure 4 is an operational diagram showing the operating state of the automatic scrap guidance device of the side trimmer 100 according to an embodiment of the present invention, and Figure 5 is a diagram showing the automatic scrap guidance device of the side trimmer 100 according to an embodiment of the present invention. This is a flowchart showing the scrap derivation method used.

Hereinafter, the induction process of the automatic scrap guidance device according to the present invention will be described with reference to FIGS. 4 and 5.

The mobile chute 221 on the chute frame 210 is used to remove scrap cut from the side trimmer 100 during side trimming work at a position close to one side support portion 212 of the chute frame 210 where the second sensor unit 240 is located. Move to the chopper machine 300.

At this time, the second sensor unit 240 may detect the reference position of the mobile chute 221, that is, the standby position of the mobile chute 221 and the operation start position of the mobile chute 221.

Next, the first sensor unit 230 may detect whether the scrap is cut by the chopper knives 311 and 321 of the chopper machine 300. For example, within the width of the moving chute 221, if the cutting position of more than two cutting scraps detected by the first sensor unit 230 is detected per second, the controller 500 performs a normal cutting operation. You can judge that it does. However, if the cutting position of the detected cutting scrap is detected at a rate of 1 or less per second, the controller 500 may determine that an abnormal cutting operation is performed.

In this way, when the controller 500 determines that the cutting operation of the chopper machine 300 is an abnormal cutting operation, it may be recognized as surface damage to the chopper knives 311 and 321 of the chopper machine 300.

In this state, when the chopper machine 300 is performing an abnormal cutting operation, the scrap discharged from the chopper machine 300 is changed to avoid the damaged chopper knife (311,321) side and is guided to the normal chopper knife (311,321) side. The guide unit 220 may operate.

When the drive motor 225 of the path change guide unit 220 rotates in the forward direction by the control signal from the first sensor unit 230, the lead screw 222 also rotates in conjunction with the rotational power of the drive motor 225. It can rotate.

The movable chute 221 screwed to the lead screw 222 moves along the screw thread in the longitudinal direction of the lead screw 222 and may be guided by the guide rods 223 and 224.

The movable chute 221 located on the chute frame 210 can move in a direction that intersects the travel direction of the strip.

The movement interval of the mobile chute 221 can be moved by a set interval (10 mm). At this time, even if the mobile chute 221 moves by the set interval, if the width of the mobile chute 221 is located on the damaged surface of the defective chopper knives 311 and 321, the mobile chute 221 moves by the set interval again.

If the moving chute 221 moves by a set interval and leaves the surface of the damaged defective chopper knives 311 and 321, normal cutting of the cutting scrap can be performed by the normal chopper knives 311 and 321.

However, if the mobile chute 221 continues to move at a set interval and does not escape the surface of the damaged defective chopper knives 311 and 321, the third sensor unit 250 located on the other support part 212 of the chute frame 210 moves. A touch is detected at the maximum movement position of the suit 221, and the third sensor unit 250 can transmit a detection signal to the controller 500.

That is, when the third sensor unit 250 detects a touch operation on the other support part 212 of the mobile chute 221, it transmits this detection signal to the controller 500, and the controller 500 In order to convey damage information of the chopper knives 311 and 321 of the chopper machine 300 to the operator, a warning unit such as a light generator or a sound generator may be operated.

Informing the worker of the damage information of the above-described chopper knives 311 and 321 may be determined as having reached the time to perform the replacement work of the chopper knives 311 and 321.

In this way, delaying the notification of damage information of the chopper knives (311,321) to the operator extends the use period of the chopper knives (311,321) to prevent production stoppage due to scrap, and prevents production stoppage due to damage to the chopper knives (311,321). This is to prevent equipment troubles.

When the task of replacing the chopper knives 311 and 321 is completed, the mobile chute 221 may return to the initial position of the chute frame 210 by rotating the drive motor 225 in the reverse direction.

The moving chute 221 may supply scrap from the initial position of the chute frame 210 to the chopper machine 300 in a steady state.

Therefore, in the present invention, when the chopper knives (311,321) of the chopper machine (300) are damaged during the side trimming operation, the direction of the scrap guided to the chopper knife (311.321) is switched to the normal chopper knife (311,321) side, thereby preventing the chopper knife ( 311,321) can reduce intensive damage and dramatically extend the use period of the chopper knife (311,321).

By extending the usage period of the chopper knives (311, 321) in this way, production stoppage due to scrap can be prevented and facility troubles due to damage to the chopper knives (311, 321) can be prevented.

In addition, the existence of a damaged chopper knife can be automatically notified to the operator so that replacement work can be performed due to damage to the chopper knives 311 and 321.

In addition, by automatically switching the direction of scrap guided by the chopper knife (311.321), work efficiency can be improved and safety can be ensured compared to conventional manual work.

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: Side trimmer
110: Upper trimmer knife
120: Lower trimmer knife
200: Scrap Judo Suit
210: Chute frame
211: base part
212: support part
220: Route change guide unit
221 : Moving chute
222: lead screw
223,224: Guide rod
225: driving motor
230: first sensor unit
240: second sensor unit
250: Third sensor unit
300: Chopper machine
310: upper chopper
311 : Chopper Knife
320: Lower chopper
321 : Chopper Knife
400: Conveyor

Claims (7)

Side trimmers that cut the edges on both sides of the strip to a specified width;
A scrap guidance chute that guides the movement of the scrap cut from the side trimmer;
A chopper machine provided with a chopper knife for cutting the scrap guided from the scrap induction chute into predetermined unit scraps;
A first sensor unit installed between the upper and lower chopper of the chopper machine and detecting whether the chopper knife is damaged;
It is installed in the scrap guidance chute, and when damage to the chopper knife is detected by the first sensor unit, a path change for changing the movement path of the scrap guided to the scrap guidance chute along the width direction of the scrap guidance chute. Scrap automatic guidance device including a guide unit.
According to paragraph 1,
The route change guide unit,
A drive motor capable of forward and reverse rotation;
a lead screw connected to the same axis of the drive motor and rotating in conjunction with the rotational power of the drive motor;
a moving chute that is screwed to the lead screw and reciprocates along the screw thread in the longitudinal direction of the lead screw as the lead screw rotates; and
A guide rod installed on at least one side of the lead screw to guide the reciprocating movement of the moving chute. Automatic scrap guidance device comprising a.
According to paragraph 1,
The first sensor unit is an automatic scrap guidance device that detects whether the chopper knife is damaged within the width of the moving chute.
According to paragraph 2,
Automatic induction of scrap further comprising a limit sensor that generates a control signal to operate a warning unit to transmit damage information of the chopper knife to the operator when the maximum movement position of the mobile chute is reached between the widthwise operating intervals of the mobile chute. Device.
According to paragraph 4,
The limit sensor includes a second sensor unit installed on one side of the scrap induction chute and detecting a waiting position and an operation start position of the moving chute; and
A third sensor unit installed on the other support part of the scrap guidance chute opposite the second sensor unit and detecting whether the maximum movement position of the moving chute is touched. Automatic scrap guidance device comprising a.
Passing step of passing scrap with chopper knives of chopper machine during trimming operation of side trimmer;
A detection step of detecting whether the scrap that has passed through the chopper machine is cut; and,
When the cutting state of the scrap is determined to be abnormal, a moving step of moving the moving chute by a set distance along the width direction so as to change the direction of the scrap to the normal chopper knife surface. Automatic scrap guidance method comprising a. .
According to clause 6,
After the moving step, when the maximum moving position of the moving chute is reached between the widthwise operating intervals of the moving chute, generating a control signal to operate a warning unit to convey damage information of the chopper knife to the operator; Scrap automatic induction method further comprising:

Images