KR20090070749A - Apparatus for measuring thickness of steel plate - Google Patents

Abstract

A steel sheet thickness measuring apparatus is provided to reduce the fixing time and releasing time of a steel sheet test piece by rotating a pressing unit and pressing and releasing the both sides of the steel sheet test piece. A steel sheet thickness measuring apparatus comprises: a body(10,20); a fixing member(110) supported by the body; a thickness measurement unit which measuring the thickness of the steel sheet with reciprocating along the fixing member; and a pressing unit(140) formed at both sides of the body. The fixing member adheres closely to the steel sheet mounted at the upper side with the magnetic force. The fixing member comprises: a fixed panel(111) supported by the body; and one or more magnets(115) coupled on the fixed panel. In the fixed panel, the steel sheet is loaded. One or more magnets attach the steel sheet closely to the upper side of the fixed panel. The pressing unit presses and fixes the upper side of the steel sheet.

Description

Sheet Thickness Measuring Equipment {APPARATUS FOR MEASURING THICKNESS OF STEEL PLATE}

This invention relates to the steel plate thickness measuring apparatus which can measure the thickness of a steel plate test piece.

Generally, a hot rolled steel sheet is manufactured through hot working, and a cold rolled steel sheet is manufactured through cold steel working. The hot rolled steel sheet is prepared by washing with acid and rolling at room temperature. In addition, since the cold rolled steel sheet is cold worked, the surface is not only beautiful but also does not require post-treatment such as descaling or washing with acid.

The test piece of the hot rolled steel sheet and cold rolled steel sheet is measured whether the thickness is uniform by using a steel sheet thickness measuring device. By repeatedly measuring and calculating the thicknesses of the plurality of steel plate test pieces, thickness variation of the steel plate test pieces can be reduced and the influence on the steel sheet production can be seen. In addition, the operator can determine the physical properties of the various materials, it is possible to prevent driving mistakes in advance.

In the steel sheet thickness device, the steel plate test piece is mounted on the fixing member, and then both sides of the steel plate test piece are tightened by tightening means. The tightening means is a structure for pressing the steel plate while being elevated as the handle rotates.

After the steel sheet test piece is fixed, a thickness sensor is moved along the longitudinal direction of the steel plate test piece to detect the thickness of the steel plate test piece.

However, since both sides of the steel plate are tightened by the fastening means in the state where the steel plate test piece is mounted on the fixed panel, a portion that is formed between the lower surface of the steel plate test piece and the upper surface of the fixed panel may be generated or the steel plate test piece may be twisted. In addition, since both sides of the steel sheet test piece is pressed downward, the steel sheet test piece is rounded upward. Therefore, since an error occurs in the thickness measurement of the steel sheet test piece while the thickness sensor is moved in the longitudinal direction of the steel sheet test piece, it is difficult to accurately measure the thickness deviation of the steel sheet, and data on the thickness deviation could not be obtained accurately. .

In addition, since only the both sides of the steel sheet test piece is fixed by the tightening means, when the thickness of the steel sheet test piece is thin, vibration may occur in a portion that the gap between the steel sheet test piece and the fixed panel. Therefore, it was difficult to measure the thickness of the said steel plate correctly by the vibration of the said steel plate test piece.

In addition, since both sides of the steel sheet test piece were pressed by the tightening means of the structure of lifting as the handle was rotated, the same pressing force was difficult to act on both sides of the steel sheet test piece. In addition, the fixing time and separation time of the steel sheet test piece were increased.

An object of the present invention for solving the above problems is to provide a steel sheet thickness measuring apparatus that can accurately measure the thickness deviation of the steel sheet test piece in a state in which the steel sheet test piece is in close contact with the fixing member as a whole.

Steel sheet thickness measurement according to the present invention, the body; A fixing member which is supported by the body and closely adheres to the steel plate mounted on the upper surface thereof by magnetic force; And a thickness measuring unit measuring the thickness of the steel sheet while reciprocating along the fixing member.

Both sides of the body may further include a pressing unit for pressing and fixing the upper surface of the steel sheet.

The fixing member is supported by the body, the fixing panel on which the steel plate is mounted; And one or more magnets coupled to the fixed panel to closely adhere the steel plate to an upper surface of the fixed panel.

The magnet may be an electromagnet or a permanent magnet. In addition, the fixing panel may be a nonmagnetic material that does not adhere to the magnet. The fixing panel may be made of aluminum.

The fixing member may further include a steel plate separating unit for pushing up the steel sheet in close contact with the upper surface of the fixing member.

The steel plate separation unit may include: at least one lifting member disposed to be liftable on the fixing member; At least one cam in contact with the lower surface of the elevating member; A cam shaft for rotating the cam; And a separating handle coupled to the camshaft.

The pressing unit may include: a fixing bracket fixed to the body; A lever hinged to one side of the fixing bracket; A first link hinged to the other side of the fixing bracket; A second link hinged to the lever and hinged to the first link; A fixing handle hinged to a portion to which the first and second links are hinged; A pressure release member hinged to the first fixing handle to press the first link; And a pressing member coupled to the lever to press the steel plate when the lever is rotated by a predetermined angle.

A height adjusting part may be further included between the lever and the pressing member to adjust the height of the pressing member according to the thickness of the steel sheet.

According to the present invention, since the thickness of the test piece is measured in a state where the steel plate test piece is in close contact with the fixed panel by magnetic force, there is an effect that data thickness can be accurately measured and measured.

According to the present invention, when the pressing unit is rotated up and down, both sides of the steel sheet test piece are pressed or released under almost the same pressure, so that the fixing time and the separation time of the steel sheet test piece can be shortened.

According to the present invention, after the measurement of the thickness of the steel sheet test piece is completed, the steel sheet separation unit is driven to move the steel sheet test piece away from the influence of the magnetic force, so that the steel sheet test piece can be easily separated.

Specific embodiments of the present invention for achieving the above object will be described.

1 is a perspective view showing a steel sheet thickness measuring apparatus according to the present invention.

Referring to FIG. 1, the steel sheet thickness measuring apparatus includes a first body 10 and a second body 20. The first body 10 and the second body 20 are connected by a transfer guide 31 and a feed screw 33. The transfer guide 31 may be coupled to both sides of the first and second bodies 10 and 20, and the transfer screw 33 may be coupled to a central portion of the first and second bodies 10 and 20. In this case, since the second body 20 reciprocates along the transfer guide 31 when the transfer screw 33 is rotated, the interval between the first and second bodies 10 and 20 may be adjusted. .

The feed screw 33 is coupled to a driving device (not shown) and rotated by driving the driving device. The driving device may be a motor device or a manual device capable of manually rotating the feed screw 33.

Both sides of the fixing member 110 are supported by the first and second bodies 10 and 20. In this case, support surfaces 11 and 12 are formed on the first and second bodies 10 and 20, respectively, and support surfaces of the first and second bodies 10 and 20 are provided on both bottom surfaces of the fixing member 110. A stepped surface is formed to be in surface contact with (11, 12). In this case, the width of the stepped surface may be operated to be substantially the same as the width of the support surface (11, 12). Therefore, when the stepped surface and the entire support surface (11, 12) is in surface contact, it is possible to visually confirm that the fixing member 110 is correctly positioned in the first and second bodies (10, 20).

The steel plate test piece 121 is mounted on the upper surface of the fixing member 110. One side of the fixing member 110 is disposed a thickness measuring unit 127 for measuring the thickness of the steel sheet test piece 121. The thickness measuring unit 127 presents a thickness measuring sensor that is in contact with the upper and lower surfaces of the steel sheet test piece 121. The thickness sensor may be elastically supported by a spring (not shown) to detect the thickness of the steel plate test piece 121 according to the displacement of the thickness measuring unit 127.

The thickness measuring unit 127 is connected to the control device 125 for reciprocating between the first body 10 and the second body 20. The control unit 125 may be disposed with a control unit and a display to display information about the thickness detected by the thickness measuring unit 127 as data.

The fixing member 110 applies a magnetic force to the steel sheet test piece 121 mounted on the upper surface to bring the steel sheet test piece 121 into close contact with the upper surface of the fixing member 110.

The fixing member 110 is fixed to the fixed panel 111 is supported by the body and the steel plate test piece 121 is mounted, and is disposed on the fixed panel 111 to fix the steel plate test piece 121 to the fixed panel 111. It may include a magnet 115 in close contact with the upper surface of the. In addition, the fixing member 110 may be a magnet 115 magnetized as a whole. An example of such a fixing member 110 will be described.

The fixing panel 111 is formed in the form of an elongated plate, the mounting groove of the elongated shape is formed on the upper surface of the fixing panel 111. The magnet 115 is formed to be thin and long so as to correspond to a seating groove (not shown) so as to be accommodated in the seating groove. In this case, the upper surface of the magnet 115 may form the same plane as the upper surface of the fixing panel 111. Of course, the upper surface of the magnet 115 may be lower than the upper surface of the fixing panel 111. In addition, the magnet 115 may be accommodated in the fixing panel 111 so as not to be exposed to the upper surface of the fixing panel 111.

At least two magnets 115 may be disposed in the width direction of the fixing panel 111. In this case, the magnets 115 may be disposed side by side in a symmetrical position at the center of the width direction of the fixing panel 111. Therefore, the same attraction force acts on both sides of the steel plate test piece 121 on the basis of the center in the width direction, so that the steel plate test piece 121 may be uniformly in contact with the upper surface of the fixed panel 111.

In addition, the fixing panel 111 may be a nonmagnetic material or a magnetic material that does not adhere to the magnet 115. At this time, if the fixing panel 111 is a nonmagnetic material, since the magnetization is not performed by the magnet 115, a portion in which the magnetic force is generated in the fixing panel 111 may be accurately set. In this case, the magnitude of the magnetic force acting on the steel sheet test piece 121 can be set accurately. On the other hand, if the fixed panel 111 is a magnetic material, the fixed panel 111 will be magnetized by the magnet 115 will act as a whole on the lower surface of the steel sheet test piece 121. In this case, the entire fixing panel 111 may act as the magnet 115 to increase the adhesion of the steel plate test piece 121.

In addition, the fixing panel 111 may be made of aluminum to reduce the weight. Therefore, it is possible to prevent the fixing panel 111 from sagging down due to its own weight.

The magnet 115 may be a permanent magnet or an electromagnet. When the magnet 115 is an electromagnet, the magnetic force may be adjusted by adjusting the current supplied to the magnet 115. In addition, when the magnet 115 is an electromagnet, since the current supplied to the magnet 115 may be cut off after the thickness measurement of the steel plate test piece 121 is completed, the steel plate separation unit 130 to be described below is not installed. You may not. In addition, since the magnetic force of the magnet 115 may be significantly increased when measuring the thickness of the steel plate test piece 121, the pressing unit 140 to be described below may not be installed.

The fixed panel 111 may further include a steel plate separation unit 130 for easily separating the steel plate test piece 121 from the fixed panel 111 when the thickness measurement of the steel plate test piece 121 is completed. In addition, the first and second bodies 10 and 20 may further include a pressing unit 140 to pressurize both sides of the steel plate test piece 121.

2 is a perspective view illustrating a coupling structure of a fixing member and a steel plate separating unit of the steel sheet thickness measuring apparatus.

Referring to FIG. 2, the steel plate separation unit 130 includes a lifting member 131 disposed on the fixing panel 111 so as to be liftable, a cam 132 contacting a lower surface of the lifting member 131. It may include a separation handle 134 is coupled to the rotating shaft of the cam 132.

The fixing panel 111 may be provided with a guide groove 117 for guiding the lifting of the lifting member 131. In this case, the guide groove 117 may be formed to be thin and long along the longitudinal direction of the fixing panel 111 at the center portion in the width direction of the fixing panel 111.

The cam 132 has a different radius from the camshaft 133. For example, the cam 132 has a large radius on one side and a small radius on the other side of the cap shaft. The cam 132 may be formed in a substantially elliptic shape.

Support members 137 are disposed on both sides of the cam 132 so as to rotatably support the cam shaft 133. A bushing 138 is coupled between each of the support pieces 137 and the cam 132 to guide the rotation of the cam shaft 133. In addition, a separation handle 134 may be connected to one end of the cam shaft 133 so as to rotate the cam shaft 133.

On the other hand, the fixing panel 111 is formed with a plurality of the guide grooves 117, each of the guide grooves 117 to place the elevating member 131, respectively, a plurality of so as to correspond to each of the elevating member 131 The cam 132 is disposed, and the plurality of cams 132 may be formed on one cam shaft 133. In this case, when the separation handle 134 is rotated, the plurality of cams 132 may elevate the plurality of lifting members 131 at the same time.

It is a side view which shows the pressurization unit which presses both sides of a steel plate test piece.

Referring to FIG. 3, the pressing unit 140 includes a fixing bracket 141, a lever 142, a fixing handle 146, a pressure release member 147, a link structure 143 and 145, and a pressure member 148. can do.

The fixing bracket 141 is coupled to the first and second bodies 10 and 20, respectively, and corresponds to both sides of the fixing panel 111.

One end of the lever 142 is coupled to one side of the fixing bracket 141 by a hinge. The first link 143 is coupled to the other side of the fixing bracket 141, and the second link 145 is coupled to one end of the lever 142. The first link 143 and the second link 145 are hinged and the hinge coupler of the first link 143 and the second link 145 is coupled to the fixing handle 146. The pressing release member 147 is hinged to the vicinity of the center of the fixed handle 146, the pressing projection 144 to be in contact with one side of the pressing release member 147 near the center of the first link (143). Is formed. In addition, a lower end of the fixing handle 146 may be supported at the upper end of the other side of the fixing bracket 141. This pressurizing unit 140 constitutes a four-section link.

Therefore, when the fixing handle 146 is pressed, the fixing handle 146 is rotated based on the upper end of the fixing bracket 141, and thus the portion where the first and second links are hinged is moved upward. In this case, the center hinge portion of the first and second links is disposed above the imaginary line L1 connecting both hinge portions of the first and second links. In addition, since the first lever 142 is rotated downward, the pressing member 148 presses the upper surface of the steel plate test piece 121, and the reaction force against the pressing force is the central side of the first and second links 143 and 145. The hinge portion is applied in the direction moving downward of the virtual line L1. Accordingly, when the two fixing handles 146 are simultaneously pressed, the pressing member 148 is held so that the pressing member 148 continuously presses the upper surface of the steel plate test piece 121. At this time, the pressure which the both side press members 148 press both sides of the said steel plate test piece 121 becomes equal. In addition, simply pressing the fixing handle 146, the steel plate test piece 121 can be easily pressed. In addition, simply pressing the fixing handle 146 upward, the pressure of the steel plate test piece 121 can be released.

The pressing member 148 is coupled to the lever 142 by the height adjusting unit 150. In this case, the height adjustment unit 150 includes a screw 151 disposed at the end of the lever 142 and a nut 152 fastened to the screw 151 to move the screw 151 up and down. Therefore, the pressing height of the pressing member 148 can be adjusted according to the thickness of the steel sheet test piece 121. In addition, the lower surface of the pressing member 148 is smoothly formed in parallel with the support surfaces (11, 12).

The operation of the steel sheet thickness measuring apparatus according to the present invention configured as described above will be described.

4 is a cross-sectional view showing a state in which a steel plate is mounted on the fixing member.

Referring to FIG. 4, the steel plate test piece 121 is mounted on an upper surface of the fixing panel 111. At this time, the steel sheet test piece 121 is uniformly in close contact with the upper surface of the fixed panel 111 by the attraction force of the magnet 115 disposed on the fixed panel 111.

In addition, when the fixing handle 146 of the pressing unit 140 is pressed downward, both sides of the fixing panel 111 are pressed and fixed by the pressing member 148 (see FIG. 1). At this time, the height adjustment unit 150 of the pressing unit 140 can be appropriately adjusted according to the thickness of the steel sheet test piece 121.

Subsequently, the control device 125 is moved along the longitudinal direction of the fixed panel 111. The thickness measuring unit 127 disposed in the control device 125 measures the thickness of the steel plate test piece 121. The thickness measuring unit 127 may measure the thickness while moving by a predetermined interval, for example, 1 mm, along the longitudinal direction of the fixing panel 111.

At this time, since the lower surface of the steel sheet test piece 121 is in close contact with the upper surface of the fixed panel 111 by the attraction force of the magnet 115, even if the thickness of the steel sheet test piece 121 is thin, the steel sheet test piece 121 is twisted. It can be prevented from rolling or vibrating. Therefore, the thickness sensor can accurately detect the thickness of the steel sheet test piece 121, it is possible to ensure accurate data about the thickness of the steel sheet test piece 121.

5 is a side view illustrating a state in which the pressing unit is depressurized.

Referring to FIG. 5, when the thickness measurement of the steel plate test piece 121 is completed, the pressure release member 147 and the fixing handle 146 of the steel plate separation unit 130 are gripped. At this time, the pressing release member 147 is rotated upward to press the pressing projection 144 of the first link 143.

The central hinge portion of the first link 143 and the second link 145 is moved below the imaginary line L1 connecting the two hinge portions. At this time, the lever 142 is moved upward to release the pressing force of the upper surface of the steel plate test piece 121.

6 is a cross-sectional view showing a state in which the steel plate mounted on the fixing member is pushed upward by a steel plate separating unit.

Referring to FIG. 6, when the separation handle 134 is rotated, the cam 132 is rotated by the cam shaft 133. At this time, since the portion of the large radius of the cam 132 is in contact with the lower surface of the elevating member 131, even if the attraction force acts on the steel sheet test piece 121 as the elevating member 131 is raised, the steel sheet test piece ( 121 can be easily separated from the fixing panel 111. When a plurality of lifting members 131 are disposed on the fixed panel 111, the steel plate test piece 121 is separated from the fixed panel 111 by being deformed even though the steel plate test piece 121 is thin. Can be.

The present invention can minimize the test time and cost of the steel sheet test piece by accurately measuring the thickness deviation of the steel sheet test piece to be data, the industrial applicability is remarkable.

1 is a perspective view showing a steel sheet thickness measuring apparatus according to the present invention.

FIG. 2 is a perspective view illustrating a coupling structure of a fixing member and a steel plate separating unit of the steel plate thickness measuring apparatus of FIG. 1.

3 is a side view illustrating the pressing unit of FIG. 1.

4 is a cross-sectional view illustrating a state in which a steel plate is mounted on the fixing member of FIG. 1.

5 is a side view illustrating a state in which the pressurization unit of FIG. 1 is depressurized.

6 is a cross-sectional view showing a state where the steel plate mounted on the fixing member of FIG. 1 is pushed upward by the steel plate separating unit.

Claims (13)

body; A fixing member which is supported by the body and closely adheres to the steel plate mounted on the upper surface thereof by magnetic force; And Steel sheet thickness measuring apparatus including a thickness measuring unit for measuring the thickness of the steel sheet while reciprocating along the fixing member. The method of claim 1, Both sides of the body is a steel sheet thickness measuring apparatus further comprises a pressing unit for pressing and fixing the upper surface of the steel sheet. The method of claim 1, The fixing member is: A fixed panel supported by the body and mounted with the steel plate; And at least one magnet coupled to the fixed panel to closely adhere the steel plate to an upper surface of the fixed panel. The method of claim 3, wherein The magnet is a steel plate thickness measuring apparatus, characterized in that arranged in both sides symmetrically from the center of the width direction of the fixed panel. The method of claim 3, wherein The magnet is a steel plate thickness measuring apparatus, characterized in that the electromagnet or permanent magnet. The method of claim 3, wherein The fixing panel is a steel plate thickness measuring apparatus, characterized in that the non-magnetic material does not adhere to the magnet. The method of claim 3, wherein The fixing panel is a steel sheet thickness measuring apparatus, characterized in that made of aluminum. The method of claim 1, The fixing member further comprises a steel plate separation unit for pushing up the steel sheet in close contact with the upper surface of the fixing member to the upper side. The method of claim 8, The steel sheet separation unit is: At least one elevating member disposed to be elevated on the fixed member; At least one cam in contact with the lower surface of the elevating member; A cam shaft for rotating the cam; And And a separation handle coupled to the camshaft. The method of claim 9, The steel sheet thickness measuring apparatus, characterized in that the fixing member is formed with a guide groove for guiding the lifting of the elevating member. The method of claim 9, The lifting member is a steel plate thickness measuring apparatus, characterized in that disposed along the longitudinal direction of the fixing member. The method of claim 2, The pressurization unit is: A fixing bracket fixed to the body; A lever hinged to one side of the fixing bracket; A first link hinged to the other side of the fixing bracket; A second link hinged to the lever and hinged to the first link; A fixing handle hinged to a portion to which the first and second links are hinged; A pressure release member hinged to the first fixing handle to press the first link; And And a pressing member coupled to the lever to press the steel sheet when the lever is rotated by a predetermined angle. The method of claim 12, Steel plate thickness measuring apparatus further comprises a height adjusting unit for adjusting the height of the pressing member according to the thickness of the steel sheet between the lever and the pressing member.

Images