KR101320028B1 - Apparatus and method for supplying sheet - Google Patents

Abstract

Disclosed is a sheet feeding apparatus and a method capable of supplying an interlayer paper from which wrinkles and foreign matters due to moisture are removed to a surface of a steel sheet wound in a coil form to prevent occurrence of surface defects in the steel sheet.
The sheet supply apparatus according to an embodiment of the present invention, the sheet supply unit for unwinding the sheet to supply the sheet and the foreign matter adsorbed on the surface of the sheet in a state in which the sheet supply path is switched in the intersecting direction to be in close contact with each other And a wrinkle removal portion for removing the foreign matter removal portion to be removed and wrinkles generated on the surface of the sheet being fed.
In addition, the sheet supply method according to an embodiment of the present invention, the step of unwinding and supplying the sheet, by switching the feed path of the sheet in the cross direction by suction to remove the foreign matter adsorbed on the surface of the sheet in close contact with each other And heating and removing the wrinkles generated on the surface of the sheet, and feeding the sheet along the surface of the steel sheet wound in the form of a coil.

Description

Sheet feeder and method {APPARATUS AND METHOD FOR SUPPLYING SHEET}

The present invention relates to a sheet supply apparatus, and more particularly, to a sheet supply apparatus and a method that can prevent the occurrence of surface defects of the steel sheet by supplying the kanji removed wrinkles and foreign matter due to moisture to the surface of the steel sheet.

The stainless steel sheet produced through the cold rolling process, above all, is an important condition for determining the quality of the product. These steel sheets are mainly produced in strip form and wound in coil form before being shipped as finished products.

Here, in the process of winding the steel sheet in the form of a coil, friction may occur between surfaces of the steel sheets facing each other, and a defect may occur on the surface of the steel sheet. In order to minimize the surface defects of the steel sheet, a method of inserting a sheet of paper material is used between the surfaces of the steel sheet wound in the form of a coil. In addition, the sheet | seat used at this time is normally called a slip sheet.

In particular, since the sheet is used as a means for preventing the surface defects from directly contacting the surfaces of the steel sheet, the sheet surface supplied to the surface of the steel sheet should also be kept smooth and clean.

However, the sheet is easily affected by the ambient temperature and humidity due to the nature of the paper material. For example, when the humidity in the workplace is high, the sheet absorbs the surrounding moisture, that is, moisture, and wrinkles appear on the surface.

In addition, due to the nature of the steel industry it is difficult to keep the working environment clean continuously, there may be a variety of foreign objects, including dust floating in the air in the workplace. In addition, such foreign matter is easily adsorbed on the surface of the sheet, the phenomenon of mixing together when the sheet is supplied appears.

If there are wrinkles due to moisture or foreign matter adsorbed on the surface of the sheet, the function of the inserted sheet cannot be faithfully performed to protect the surface defects of the steel sheet. Furthermore, in this case, a larger defect is generated on the surface of the steel sheet by the supply of the sheet, which may act as a cause of seriously impairing the surface quality of the steel sheet.

The present invention provides a sheet feeding apparatus and method capable of supplying a surface of a steel sheet wound in the form of a coil after treating the surface of the sheet for protecting the steel sheet in advance cleanly and smoothly.

In addition, the present invention provides a sheet feeding apparatus and method that can be inserted into the surface of the steel sheet by the heat treatment when the wrinkles due to moisture on the surface of the sheet for protecting the steel sheet.

In addition, the present invention provides a sheet feeding apparatus and method that can remove the foreign matter adsorbed on the surface of the sheet for protecting the steel sheet and insert the smooth sheet into the surface of the steel sheet.

According to an embodiment of the present invention, the sheet supply unit for supplying the sheet by unwinding the sheet; A foreign material removal unit for suctioning and removing foreign substances adsorbed on the surface of the sheet in a state in which the supply path of the sheet is switched in an intersecting direction and in close contact with each other; And a wrinkle removing unit for removing wrinkles generated on the surface of the sheet being supplied.

In this case, the foreign matter removing unit may be disposed in advance of the wrinkle removing unit on the supply path of the sheet.

The foreign material removing unit is wound around the sheet to change the supply path of the sheet in the orthogonal direction through an outer surface, and a foreign material suction member having a roll shape to suck the foreign substances adsorbed on the surface of the sheet through suction holes provided on the outer surface. ; And vacuum suction means for applying a vacuum negative pressure to the foreign substance suction member.

The foreign substance suction member may further include a suction chamber communicating with the suction hole and forming an inner hollow in a longitudinal direction.

And the vacuum suction means, the vacuum pump for generating a vacuum negative pressure required to remove the foreign matter adsorbed on the surface of the sheet; And a vacuum pipe connected between the vacuum pump and the foreign matter suction member.

Here, the vacuum suction means may further include a corrugated pipe that is elastically connected between the vacuum pipe and the foreign matter suction member, made of a flexible material.

The wrinkle removing unit may include: a pair of opposing members formed to form a narrow passage through which the sheet may pass, and to be in contact with the surface of the sheet; And a heating member connected to at least one of the pair of opposing members.

In this case, the pair of opposing members may have an arc-shaped curved surface of which inner surface portions facing each other toward the surface of the sheet are convex inward.

In addition, the sheet supply apparatus may further include a control unit for controlling the operation of the sheet supply unit, the foreign material removal unit and the wrinkle removal unit by a command input in real time from a user or a command according to a pre-stored operation program. .

On the other hand, according to an embodiment of the present invention, (a) unwinding the sheet to supply; (b) converting the feed path of the sheet in an intersecting direction to inhale and remove foreign substances adsorbed on the surface of the sheet in close contact with each other; (c) heating and removing the wrinkles formed on the surface of the sheet; And (d) supplying the sheet along the surface of the steel sheet wound in the form of a coil.

In the step (b), by forming a vacuum negative pressure on the surface of the sheet can be sucked foreign matter adsorbed on the surface of the sheet.

In the step (c), the sheet may be inserted into a narrow passage through which both surfaces are in contact with each other, and at least one surface of both surfaces of the sheet may be heated to remove wrinkles generated by moisture or moisture.

According to an embodiment of the present invention, a stainless steel sheet is produced in a strip form through a cold rolling process, and then a surface smooth sheet protection sheet is interposed between the steel sheets during the process of being wound in a coil form to prevent surface defects from occurring. .

In particular, when wrinkles due to moisture are present on the surface of the sheet for protecting the steel sheet, the surface of the sheet can be smoothly processed by removing the moisture in the sheet by heating control of the sheet inserted between the steel sheets.

In addition, when foreign matter is adsorbed on the surface of the sheet for protecting the steel sheet, the foreign matter can be removed by performing vacuum suction in close contact with the surface of the sheet during the flow path of the sheet.

1 is a schematic view showing a sheet feeding apparatus according to an embodiment of the present invention.
Figure 2 is a schematic diagram showing a foreign matter removing unit which is a part of the sheet supply apparatus according to an embodiment of the present invention.
3 is a perspective view briefly showing a foreign substance suction member that is a part of the foreign substance removing unit shown in FIG.
4 is a configuration diagram schematically showing a wrinkle removing unit which is a part of the sheet feeding apparatus according to the embodiment of the present invention.
Figure 5 is a flow chart showing step by step the sheet feeding method according to an embodiment of the present invention.

The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary meanings and the inventor shall appropriately define the concept of the term in order to describe its invention in the best way It should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention, and not all of the technical ideas of the present invention are described. Therefore, It should be understood that various equivalents and modifications may be present.

First, before describing the sheet feeding apparatus according to the present embodiment, a schematic structure and arrangement relationship of the sheet feeding apparatus shown in FIG. 1 will be briefly described.

Thin steel sheets, especially stainless steel sheets (hereinafter referred to as 'steel plates') produced through cold rolling processes, are an important requirement for determining the quality of the product, and are usually produced in strip form. It is wound and stored in the form of a coil.

Referring to Figure 1, the strip-shaped steel sheet is transferred from one side by the lower feed roll 10, from which the steel sheet is wound in a coil form along the outer diameter of the mandrel (mandrel) 20 is located downward Can be. And the mandrel 20 may be configured to be connected to a separate drive device to enable the rotational speed adjustment. In addition, the lower feed roll 10 may be variously configured as a horizontal feed roll 11 or a direction change feed roll 13 according to the feed direction of the steel sheet.

However, the steel sheet (C) wound in the coil form in this way may cause friction between the surfaces of the steel sheet in contact with each other may cause serious surface defects. Thereby, a sheet member (hereinafter referred to as "sheet S") called interlayer paper is inserted between the surfaces of the steel sheet C to prevent surface defects of the steel sheet.

Sheet feeding apparatus according to an embodiment of the present invention, as described above is a device for supplying a sheet (S) to be inserted between the surface of the steel sheet (C), the surface of the sheet (S) to make the surface of the steel sheet smoother and clean In order to make the surface quality better.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the sheet feeding apparatus and method according to an embodiment of the present invention.

1 is a schematic view showing a sheet feeding apparatus according to an embodiment of the present invention.

As shown, the sheet supply apparatus according to the present embodiment includes a sheet supply unit 101 for unwinding and supplying a sheet, a foreign substance removal unit 110 for suctioning out and removing foreign substances present on the sheet surface, and generating the sheet on the sheet surface. It includes a wrinkle removal unit 140 for removing the wrinkles.

The sheet supply part 101 is a configuration for supplying the sheet S which is a protection member supplied along the surface of the steel sheet C wound in the form of a coil, and as shown, a direction different from the direction in which the steel sheet C is supplied. The sheet is unwound and supplied.

The sheet supply unit 101 is more preferably positioned upward than the mandrel 20 to which the steel sheet C is wound in order to supply the sheet S more smoothly. For this purpose, the overall configuration of the sheet supply unit 101 is formed in a desk form. It can be fixed and placed on the worktable. For example, it can be seen that the form of the worktable shown is composed of a bed 1 of a rectangular plate and a plurality of legs 3 which are fixed by fixing the bed 1 upward from the ground. However, this form is only one exemplary shape and does not limit the scope of the present invention.

The sheet supply unit 101 is disposed on an upper side of the work bench and, as a detailed configuration, includes a sheet supply roll 102, a sheet supply motor 104, and a bearing member 106.

The sheet feed roll 102 is a roll-shaped member which winds and stores the sheet S along the outer circumferential surface, and unwinds and supplies the sheet S as it is driven to rotate by the sheet feed motor 104. The seat supply motor 104 is a member that receives an external power source and outputs a rotational force at a speed set by a user. In addition, the sheet supply motor 104 may be connected through one central axis of the sheet supply roll 102, and alternatively, the bearing member 106 may be connected through the other central axis of the sheet supply roll 102. At this time, the bearing member 106 serves to prevent the central axis from shaking during the rotation of the sheet feed roll 102 and to improve the lubrication performance during the rotation.

And the sheet supply unit 101 should be able to supply the sheet (S) at the same line speed as the steel plate (C) supplied to be wound in a coil form by the mandrel (20). The supply speed between the steel plate C and the sheet S may be solved by a user's real-time command or a pre-stored motor driving program, and may be driven by receiving a control signal of the controller 150 to be described later. .

On the other hand, on the surface of the sheet (S) to be supplied after unwinding through the sheet supply unit 101 may have a foreign material (a1) or wrinkles (a2) due to moisture.

Due to the nature of the steel industry, it is difficult to keep the working environment clean. Therefore, various foreign matters (a1), such as dust, may be present in the workplace. Such foreign matter a1 is easily adsorbed on the surface of the sheet S and may be mixed together when the sheet is supplied. In addition, the sheet (S) is easily affected by the ambient temperature and humidity due to the nature of the paper material. If the humidity in the workplace is high, wrinkles (a2) due to the absorption of moisture may appear on the surface of the sheet (S).

However, the sheet (S) in the present embodiment is a member supplied to prevent the surface defects of the steel sheet, it should be possible to maintain a clean state before supplying to the steel sheet wound in the coil form, the surface wrinkles are to be removed It should be possible.

The foreign material removing unit 110 is configured to remove foreign substances adsorbed on the surface of the sheet S, and is less than the wrinkle removing unit 120 on a path through which the sheet S unrolled through the sheet supply unit 101 is transferred. It is preferable to arrange in advance. This is because it is necessary to first remove the foreign matter a1 such as dust adsorbed onto the sheet S and then heat-remove the wrinkles a2 of the sheet S, so that the sheet S having a smoother surface quality can be supplied. to be. This is because, if particles such as dust are adsorbed on the surface of the sheet S, and the surface wrinkles of the sheet S are to be removed by heating, it may cause a problem that the dust particles are pressed to the sheet S.

The foreign material removing unit 110 is a vacuum for applying a vacuum negative pressure to the foreign material suction member 120 and the foreign material suction member 120 wound around the surface of the sheet (S) supplied by the sheet supply unit 101 and in close contact with each other. It comprises a configuration of the suction means (130).

The foreign material suction member 120 is wound around the surface of the sheet (S) being supplied to make a close flow, while providing a plurality of suction holes 123 on the outer surface in close contact with the surface of the sheet (S) by the sheet (S) The suction and removal of the foreign matter (a1) adsorbed on the surface of the. In addition, the vacuum suction means 130 corresponds to a configuration of a pneumatic device that applies a vacuum negative pressure to the foreign matter suction member 120 to suck the foreign matter a1 through the plurality of suction holes 123.

Detailed configuration of the foreign material removal unit 110 and the effect can be confirmed in detail through FIG.

As shown in FIG. 2, the foreign substance suction member 120 may be disposed to be inclined in a plane with respect to the direction in which the sheet S is supplied from the sheet supply roll, that is, the inflow direction W1 of the sheet (through FIG. 1). Accordingly, the supply direction of the sheet S, which is in close contact with the outer surface 121a of the foreign matter suction member 120, that is, the outflow direction W2 of the sheet, is determined from the inflow direction W1 of the sheet. It can be switched in the direction intersected by 90 degrees, which is a form for winding the surface of the sheet (S) being supplied to the foreign material suction member 120 to further contact the contact state between the member and the sheet.

The foreign substance suction member 120 sucks and removes the foreign substance a1 adsorbed on the surface of the sheet S in a state where the vacuum negative pressure generated by the vacuum suction means 130 is applied. The installation position can be fixedly inclined at the center inside the bed 1 of the work bench. And for this purpose, the fixed shaft 113 at both ends may be fixed to the installation position by a fixing bracket 111 fastened to the bed (1). However, this structure is only one exemplary shape according to the present embodiment and does not limit the present invention.

In particular, the detailed structure of the foreign substance suction member 120 may be referred to FIG. 3. 3 is a perspective view briefly illustrating a foreign substance suction member, a cross-sectional view of a section P-P ', and a cross-sectional view of a section Q-Q'.

First, referring to FIG. 3A, the schematic shape of the foreign substance suction member 120 may be confirmed. As shown, the foreign matter suction member 120, the fixed shaft 113a, 113b is formed at both ends extending in both longitudinal directions, which is a fastening portion that is fixed by the fixed shaft bracket 111 described above.

And the overall body 121 of the foreign matter suction member 120, it is made of a cylindrical (or roll) shape longer than the circular cross-sectional size. In addition, a plurality of long grooves recessed in the longitudinal direction is provided on the outer surface 121a thereof, and a plurality of suction holes 123 are spaced apart at predetermined intervals in each of the long grooves to penetrate through the body 121.

FIG. 3B is an enlarged view of a cross section of the P-P ′ section in FIG. 3A, and specifically, an internal cross-sectional shape of the foreign substance suction member 120 may be confirmed. As shown, the outer surface 121a of the foreign substance suction member is wound in a state in which the surface of the sheet S, that is, one surface is in close contact. And when it is assumed that the vacuum negative pressure is applied to the inner hollow of the foreign matter suction member 120, the foreign matter a1 adsorbed on the surface of the sheet (S) is sucked to the inside through the plurality of suction holes (123).

On the other hand, the outer surface 121a of the foreign substance suction member, that is, the suction hole 123 provided in the recessed long groove is formed to penetrate through the inner hollow of the foreign substance suction member, wherein the inner hollow is the suction chamber 127.

The suction chamber 127 refers to a hollow area formed in the longitudinal direction of the foreign substance suction member. In particular, the suction chamber 127 is penetrated through the communication path 125 and the intake hole 123, and at the same time the vacuum through one side fixed axis of the foreign matter suction member (113b in Fig. 3 (a)) Even suction means are connected.

According to this structural feature, in the suction chamber 127 may take a vacuum negative pressure to the inside depending on the operation of the vacuum suction means, the foreign matter through the plurality of suction holes 123 connected by the communication path (125). It can be sucked inside.

3 (c) is an enlarged view of the QQ 'section in (a) of FIG. 3, wherein the foreign substance suction member 120 of the fixed shaft 113b is connected to the vacuum suction means (130 of FIG. 1). You can check the internal structure.

That is, it is connected to the vacuum suction means (130 of FIG. 1) through at least one of the fixed shafts 113a and 113b of the foreign matter suction member 120 in FIG. 3A. In particular, referring to FIG. 3 (c), a hollow 114 communicating with a pipe of a vacuum suction means is provided in the fixed shaft 113b of one side of the foreign substance suction member, and the hollow 114 of FIG. It has a structure in communication with the suction chamber 127 shown in (b).

Referring to FIG. 2 again, a detailed configuration of the vacuum suction means 130 will be described.

As shown, the vacuum suction means 130 is in communication with one side of the above-described foreign matter suction member 120 to provide a function of applying a vacuum negative pressure to the inside of the foreign matter suction member 120.

To this end, the vacuum suction means 130 may include a detailed configuration of the vacuum pump 131 and the vacuum pipe 135 connected between the vacuum pump 131 and the foreign matter suction member 120. Here, the vacuum pump 131 receives the electrical control signal (C1) from the controller 150 to be described later to control the ON / OFF, as well as to adjust the size of the vacuum load to be walked to the foreign material suction member 120 Can be.

Furthermore, it may further include a vacuum valve 133 for opening and closing the pneumatic flow on the vacuum pipe 135. Here, as a specific example of the vacuum valve 133, an electronic valve (that is, a solenoid) that is opened and closed by receiving an electric control signal C1 from the controller 150 to be described later may be used. That is, when the control signal C1 is applied to the vacuum pump 131, the control signal C1 may also be applied to the vacuum valve 133.

In addition, the vacuum suction means 130 according to the present exemplary embodiment may further include a foreign matter collection box 139 for carrying out and separately storing the foreign matter a1 sucked through the vacuum pipe 135. When using the foreign matter collection box 139, it is easy to easily collect and discard the foreign matter (a1) sucked and removed from the surface of the sheet (S).

On the other hand, the connection portion between the vacuum pipe 135 and the foreign matter suction member 120, the pleated pipe 137 having a stretch to some extent in the vertical direction of the flexible material may be further connected. The corrugated pipe 137 is a bellows (or bellows) connecting pipe member, and may have flexibility at the joint portion of the pipe, thereby helping to adjust the arrangement relationship of each component device as the user intends.

The wrinkle removal unit 140 is configured to heat remove wrinkles (especially wrinkles caused by moisture) generated on the surface of the sheet S being supplied. Referring to FIG. 1, the wrinkle removal unit 140 shown in FIG. 1 is disposed on a supply path of the sheet S from which the foreign matter a1 on the surface is removed by the action of the foreign matter removal unit 110 described above.

In order to specifically confirm the detailed configuration of the wrinkle removing unit 140, reference may be made to FIG. 4. 4 is a configuration diagram schematically showing a wrinkle removing unit which is a part of the sheet feeding apparatus according to the embodiment of the present invention.

As shown in FIG. 4, the wrinkle removing unit 140 includes a pair of opposing members 141 disposed on both sides with the supply path W3 of the sheet S therebetween, and a pair of opposing members 141. And a heat generating member 143 connected to at least one side thereof and electrically generating heat.

The pair of opposing members 141 form a narrow passage 142 through which the sheet S remaining only in the wrinkles a2 can pass on the supply path W3 of the sheet S from which the foreign matter has already been removed. The inner surfaces of each of the pair of opposing members 141a and 141b facing each other are formed to contact the surface (ie, both surfaces) of the sheet S.

In particular, the specific example shape of each of the pair of opposing members 141a and 141b is such that portions facing each other toward both sides of the sheet S passing through the narrow passage 142 have convexly curved surfaces 141 '. Is formed. In addition, the interval t2 of the passage 142 through which the sheet passes at the curved surface 141 ′ may be the same size as that of the thickness t1 of the sheet S having no wrinkles (that is, t1 = preferably t2).

On the other hand, the heat generating member 143 is connected to at least one of each of the pair of opposing members 141a and 141b.

The heat generating member 143 is a configuration in which heat is generated by receiving an electric control signal C2 by the controller 150 to be described later, and the opposing member 141a connected to the heat generating member 143 in contact with the heat generating member 143. Is heated by heat transfer.

As the heat generating member 143 is connected to at least one of the pair of opposing members 141 to generate heat, the heated pair of opposing members 141 passes through the narrow passage 142 formed therebetween. Moisture in (S) can be removed and the wrinkles a2 of the surface of the sheet S can be removed.

On the other hand, the cross-sectional shape of each of the opposing members 141a and 141b shown is shown to be a thin arc-shaped plate-like member, but this is one exemplary shape that can be easily transferred heat from the heat generating member 143, The present invention is not limited thereto. As another example, it is also possible to use a half-moon-shaped cross-sectional members facing each other, and in addition, if the convex arc-shaped curved surface (141 ') can be formed through the narrow passage 142 provided on the opposing portion can be modified into any shape Can be.

The pair of opposing members 141 and the heat generating member 143 described above are not only the bed (1 in FIG. 1) or the leg (3 in FIG. 1) of the work bench shown in FIG. It can be fixed by mounting on).

To this end, a connecting bar 145 which is connected to and fixed to a part of the worktable may be extended to the rear of the heat generating member 143 connected to the opposing member 141, and a bolt B may be formed at the end of the connecting bar 145. ) Can be fixed to the bolt fixing piece 147 can be provided.

In addition, the sheet fixing device 100 according to the embodiment of the present invention described above may further include a configuration of the controller 150, as can be confirmed through FIG. 1.

As described above, the controller 150 applies a control signal C1 necessary for driving and opening / closing the vacuum pump 131 and the vacuum valve 133 as well as driving the sheet supply motor 102. The control signal C2 required for heat generation control of the heat generating member 143 of the wrinkle removing unit 140 is configured.

That is, the controller 150 receives a command or a pre-stored operation program input in real time from a user through a separate input means (for example, a switch or a storage medium) to receive control signals C1 and C2 necessary for each configuration. Create it and authorize it. Accordingly, automation of the sheet feeding apparatus can be realized.

6 is a flowchart sequentially showing the sheet feeding method according to an embodiment of the present invention in each step. With reference to FIG. 6, the sheet feeding method according to the present embodiment will be described in detail for each step. However, in describing the sheet feeding method according to the present embodiment, the reference numerals for the device configuration that can be used in each step will be described in parallel as in FIGS. 1 to 5.

Sheet unwinding step (ST100)

This step (ST100) is a step of starting supply in order to unwind the sheet (S in FIG. 1), which has been wound and stored in a roll form, and to insert it into the surface of the steel sheet.

First, a control signal is applied to the sheet feed motor (104 in FIG. 1) in accordance with a user's command (or input of a preset operation program). Accordingly, when driving of the sheet feed motor is started, the sheet feed roll 102 (in FIG. 1) connected with the drive shaft of the sheet feed motor starts to rotate at a controlled speed. As a result, the sheet (S in FIG. 1) wound and stored in the sheet feed roll (102 in FIG. 1) starts to be supplied in the set direction (W1 in FIG. 2).

Foreign object suction removal step (ST200)

This step (ST200) is a step of suction-removal of various foreign substances including dust adsorbed on the surface of the sheet (S of FIG. 1) from which supply is started.

In particular, after the sheet being fed through the previous step (ST100) is wrapped using a roll-shaped member, the sheet feeding path crosses in a direction perpendicular to the direction of the initial feeding path, so that the surface of the sheet is closely attached. To make it possible. The foreign matter adsorbed on the surface of the sheet is subjected to vacuum negative pressure to remove the foreign matter.

In the sheet feeding method according to the embodiment of the present invention, the sheet (S in FIG. 1) is a member inserted between the surfaces of the steel sheets in contact with each other in order to prevent defects due to surface friction between the steel sheets wound in coil form.

However, various foreign matters (a1 in FIG. 1) including dust may be present in the air around the workplace. When such foreign matters (a1 in FIG. 1) are adsorbed on the surface of the sheet, the sheet surface defect prevention function of the sheet itself is performed properly. It's hard to be. Therefore, this step (ST200) corresponds to the step of removing the foreign matter adsorbed on the surface of the sheet (a1 of FIG. 1) by the vacuum suction method.

In this step ST200, in particular, the vacuum negative pressure is applied toward the surface of the sheet while the surface of the sheet (S in FIG. 1) is in close contact. Through this, foreign matter adsorbed on the surface of the sheet (a1 in FIG. 1) is easily removed by suction.

Wrinkle removal step due to moisture (ST300)

This step ST300 is a step performed after the dust adsorbed on the surface of the sheet (S in FIG. 1) in the previous step ST200 and removes wrinkles existing on the surface of the sheet.

Here, the sheet (S of FIG. 1) is a sheet member provided with a thin paper material, and is easily affected by ambient temperature or humidity due to the characteristics of the paper material. In particular, when the sheet is stored in a humid environment, the sheet may absorb ambient moisture and cause wrinkles. This step is to remove the wrinkles to smooth the surface of the sheet.

In this step (ST300), in particular, the sheet in a state in which foreign matter is removed on the surface is inserted through the narrow passage (142 in Figure 4) in a state that both sides contact. At the same time as the sheet insertion, at least one surface of both sides of the sheet is heated. As a result, the moisture contained in the sheet can be removed, as well as wrinkles (a2 in FIG. 4) on the surface of the sheet generated due to the moisture already contained. As a result, the surface of the sheet may be smoothed.

Sheet feeding step to the surface of steel sheet (ST400)

In this step, the sheet (S ′ in FIG. 1) is removed while the foreign matter (a1 in FIG. 1) on the surface is removed and the wrinkles (a2 in FIG. 1) on the surface are removed while passing through the previous steps ST200 and ST300. It is a step of supplying to be inserted into the surface (ie, one surface) of the steel sheet (C) wound in the form of a coil. Through this step, it is possible to prevent the surface defects of the steel sheet wound in the form of a coil.

As described above, according to the embodiment of the present invention, it is possible to prevent the occurrence of surface defects of the steel sheet by interposing a sheet having a smooth steel sheet protection between the steel sheets wound in the form of a coil.

If wrinkles due to moisture are present on the surface of the sheet for protecting the steel sheet, the sheets inserted between the steel sheets may be heated to remove moisture from the sheets. In addition, when foreign matter is adsorbed on the surface of the sheet for protecting the steel sheet, the inflow of foreign matters can be suppressed by performing vacuum suction in close contact with the surface of the sheet during the flow path of the sheet. Thereby, the surface state of the sheet | seat for steel plate protection can be kept clean and smooth.

Accordingly, the surface quality of the stainless steel sheet shipped as a finished product can be guaranteed, and the product competitiveness can be improved.

On the other hand, the sheet feeding apparatus and method according to an embodiment of the present invention need not be limited to the use of 'kanji' inserted for protecting the surface of the steel sheet.

In other words, as a device and a method capable of supplying a sheet after cleanly treating a foreign matter adsorbed on a surface or removing a surface wrinkle due to moisture to have a smooth surface, it will be available through various technical fields.

The sheet feeding apparatus and method of the present invention have been described with reference to the preferred embodiments.

It is to be understood that the above-described embodiments are to be considered in all respects as illustrative and not restrictive, and the scope of the present invention will be indicated by the appended claims rather than by the foregoing detailed description. And it is to be construed that all changes and modifications derived from the equivalent concept as well as the meaning and scope of the claims are included in the scope of the present invention.

C: steel sheet S: sheet
a1: foreign matter a2: wrinkle
100: sheet feeder
101: sheet feed section 102: sheet feed roll
104: seat supply motor 106: bearing member
108: guide roll
110: foreign matter removal unit
111: fixed shaft bracket 113: fixed shaft
120: foreign substance suction member
121: rolled body 121a: rolled body outer surface
123: suction ball 123a: suction long groove
125: communication flow path 127: suction chamber
130: vacuum suction means
131: vacuum pump 133: valve
135: vacuum piping 137: corrugated piping
139: Foreign Object Collection Box
140: wrinkle removal unit
141: pair of opposing members 141 ': arc-shaped curved surface
142: narrow passage 143: heat generating member
145: connecting bar 147: bolt fixing piece
150:

Claims (12)

A sheet supply unit which unwinds a sheet and supplies the sheet;
A foreign material removal unit for suctioning and removing foreign substances adsorbed on the surface of the sheet in a state in which the supply path of the sheet is switched in an intersecting direction and in close contact with each other; And
A wrinkle removal unit for removing wrinkles generated on the surface of the sheet being supplied;
Lt; / RTI >
The foreign material removing unit,
It is disposed to be inclined on a plane with respect to the inflow direction of the sheet is wound around the sheet through an outer surface to switch the supply path of the sheet in an orthogonal direction, and suction the foreign matter adsorbed on the surface of the sheet through the suction hole provided on the outer surface A roll-shaped foreign substance suction member; And
Vacuum suction means for applying a vacuum negative pressure to the foreign substance suction member;
Sheet feeder comprising a.
The method according to claim 1,
The foreign matter removing unit is disposed in advance of the wrinkles removing unit on the supply path of the sheet.
The method according to claim 1,
The foreign matter suction member,
And a suction chamber communicating with the suction hole and forming an inner hollow in a longitudinal direction.
The method according to claim 1,
The vacuum suction means,
A vacuum pump generating a vacuum negative pressure necessary to remove foreign matter adsorbed on the surface of the sheet; And
A vacuum pipe connected between the vacuum pump and the foreign matter suction member;
Sheet feeder comprising a.
The method of claim 4,
The vacuum suction means,
And a corrugated pipe elastically connected to the flexible pipe between the vacuum pipe and the foreign substance suction member.
The method according to claim 1,
The wrinkle removal unit,
A pair of opposing members forming a narrow passage through which the sheet can pass, and formed to be in contact with the surface of the sheet; And
A heating member connected to at least one of the pair of opposing members;
Sheet feeder comprising a.
The method of claim 6,
The pair of opposing members,
And an arc-shaped curved surface in which inner surface portions facing each other toward the surface of the sheet are convex inward.
The method according to claim 1,
The sheet feeder,
And a control unit controlling the operation of the sheet supply unit, the foreign matter removing unit, and the wrinkle removing unit by a command input in real time from a user or a command according to a pre-stored operation program.
(a) unwinding and feeding the sheet;
(b) converting the feed path of the sheet in an intersecting direction to inhale and remove foreign substances adsorbed on the surface of the sheet in close contact with each other;
(c) heating and removing the wrinkles formed on the surface of the sheet; And
(d) supplying the sheet along a surface of the steel sheet wound in the form of a coil;
Before the step of removing the foreign material by suction, the sheet is wound around the foreign material suction member by using a foreign material suction member in a roll shape, and then the supply path of the sheet is switched to cross at right angles to the direction of the initial supply path. And the surface of the sheet is in close contact with the foreign matter suction member.
The method according to claim 9,
In the step (b)
And a vacuum negative pressure is formed on the surface of the sheet to suck foreign matter adsorbed onto the surface of the sheet.
The method according to claim 9,
In the step (c)
And inserting the sheet into a narrow passage through which both surfaces are in contact with each other, wherein at least one surface of both surfaces of the sheet is heated to remove wrinkles caused by moisture or moisture.
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