KR101179683B1 - Device for making test piece of steel sheet - Google Patents

Abstract

In manufacturing the specimen from the steel sheet, the punching die for specimen manufacture is spaced apart and the steel sheet proceeds upwards to prevent the prepared specimen from being caught inside the punching die of the lower press and to discharge the specimen smoothly. A lower press, a punch provided at a position corresponding to the punching die, and an upper press positioned above the steel sheet, and a driving cylinder for pressing the upper press, the lower press being installed along the punching die in the lower press to the punching die. Provided is a steel sheet specimen manufacturing apparatus including a pneumatic portion for separating the specimen prepared by blowing air from the punching die.

Description

Steel Sheet Specimen Manufacturing Equipment {DEVICE FOR MAKING TEST PIECE OF STEEL SHEET}

The present invention relates to a specimen manufacturing facility. More specifically, the present invention relates to a steel sheet specimen manufacturing apparatus that is capable of continuously manufacturing the specimen from the steel sheet.

In general, in order to confirm the quality characteristics of the manufactured steel sheet, a specimen is prepared from the steel sheet, and various quality tests are performed using the specimen. The standards for the production of these specimens are set by international standards.

For example, in the case of electrical steel sheets, the specimens are manufactured with a length of 305 mm and a width of 30 mm. In the case of directional products, 20 specimens are prepared in the rolling direction, and in the case of non-directional products, 16 sheets (8 in the rolling direction and 8 in the direction perpendicular to the rolling direction) are manufactured and tested.

Specimens are manufactured using press equipment. A press facility is provided for punching the specimen in a form set on a transport line to which the steel sheet is transported. In the press equipment, cutting blades are arranged at regular intervals on the upper press, and punching dies are disposed at positions corresponding to the cutting blades on the lower press so that a plurality of specimens can be simultaneously produced.

When the steel sheet is transferred to the press equipment along the transfer line and presses the upper press, the cutting blade and the punching die with the press are engaged to cut the specimen from the steel sheet.

However, in the conventional apparatus, as a result of punching several specimens at the same time, a phenomenon in which the prepared specimen does not get caught in the punching die of the lower press occurs. This takes a lot of time for the work to remove the specimen from the punching die, and thus the work delay is a problem that the manufactured specimen is broken and can not be used.

Accordingly, in manufacturing the specimen from the steel sheet, the prepared specimen is prevented from being caught in the punching die of the lower press, and provides a steel sheet specimen manufacturing apparatus which can smoothly discharge the specimen.

To this end, the apparatus is provided with a lower press on which the punching die for specimen manufacture is spaced apart and the steel sheet proceeds to the upper portion, and a punch is provided at a position corresponding to the punching die to press the upper press on the upper steel sheet and press the upper press. It includes a drive cylinder, may be installed along the punching die in the lower press may include a pneumatic portion for separating the specimen prepared by blowing the air into the punching die from the punching die.

The pneumatic part is provided in the housing which is installed along the punching die and the through hole formed in the side of the housing and formed in the punching die to blow out the air into the punching die, the upper end of the open housing Pressing plate pressed by the upper press to compress the air inside the housing, a blocking plate installed on the pressing plate in close contact with the inner surface of the housing and selectively communicating with the ejection opening, the elasticity between the inner surface of the inside of the housing and the pressing plate It may include an elastic spring to be installed, a supply pipe connected to one side of the enclosure to supply air into the enclosure.

The upper press may be further provided with a pressing plate installed at a position corresponding to the pressing plate to press the pressing plate.

The apparatus may further include a rising part for lifting the steel sheet upward when the upper press is raised.

The rising part is provided on the side of the upper press extending plate extending to the lower press side, the tooth formed on the inner end of the extension plate, the ratchet wheel is installed on the lower press when the upper press descends, the ratchet wheel, the ratchet It may include an operation bar installed on the wheel extending to the steel plate, a lifting roll installed on the operation bar and positioned below the steel plate, and installed between the operation bar and the lower press to return the operation bar to its original position.

According to the apparatus as described above, it is possible to smoothly discharge the produced specimen to prevent the work delay for removing the specimen and to increase the work efficiency.

In addition, it is possible to prevent the produced specimen is wrinkled or broken, thereby increasing the quality of the specimen.

1 is a perspective view showing the configuration of a steel sheet specimen manufacturing apparatus according to this embodiment.
2 is a cross-sectional view of the steel sheet specimen manufacturing apparatus according to this embodiment.
3 is a perspective view showing a part of the configuration of the steel sheet specimen manufacturing apparatus according to this embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. As can be easily understood by those skilled in the art, the following embodiments may be modified in various forms without departing from the spirit and scope of the present invention and the embodiments described herein. It is not limited to the example.

The drawings are schematic and illustrate that they are not drawn to scale. The relative dimensions and ratios of the parts in the figures have been exaggerated or reduced in size for clarity and convenience in the figures and any dimensions are merely exemplary and not limiting.

1 and 2 illustrate a steel sheet specimen manufacturing apparatus according to this embodiment.

As shown, the apparatus includes a lower press 10 and an upper press 12 installed on a conveying line to which the steel sheet P is conveyed. The lower press 10 supports the steel plate P installed on the ground and transported thereon. The lower press 10 is provided with a punching die 16 of a size corresponding to the specimen at intervals. The upper press 12 is positioned above the lower press 10 to be moved up and down by the operation of the driving cylinder 14 to press the steel sheet (P). The upper press 12 is provided with a punch 18 for cutting the specimen from the steel sheet (P) at a position corresponding to the punching die (16). Accordingly, when the driving cylinder 14 is extended and operated, the upper press 12 descends to press the steel plate P between the lower press 10 and the punch 18 installed in the upper press 12 and the lower press 10. And punching die 16 are engaged to cut the specimen from the steel sheet (P).

Here, the apparatus is installed along the punching die 16 in the lower press 10 and blows air into the punching die 16 to separate the specimen cut by the punch 18 from the punching die 16. The unit 20 further includes.

In this apparatus, when the upper press 12 is lowered to cut the specimen from the steel sheet P, the pneumatic part 20 ejects air toward the punching die 16. Therefore, while the specimen is lifted from the punching die 16 by the blown air, it is possible to prevent the specimen from being caught in the punching die 16.

In the present embodiment, the pneumatic part 20 is pressed by the upper press 12 and compressed to have a structure that ejects the compressed air.

To this end, the pneumatic part 20 is installed on the lower press 10 along the punching die 16 along the punching die 16 and the upper end of the upper opening 12 of the housing 22. Pressed by the pressing plate 24 to compress the air inside the housing 22, the through-hole 28 formed on the side of the housing 22 and formed in the punching die 16 is communicated into the punching die 16 Blocking plate 25 is provided with a spout port 23 for ejecting air, the connector 27 is provided in the pressing plate 24 is in close contact with the inner surface of the housing 22 and selectively connected to the spout port 23 on the front surface And an elastic spring 26 elastically installed between the inner bottom surface of the enclosure 22 and the pressing plate 24, and a supply pipe 29 connected to one side of the enclosure 22 to supply air into the enclosure 22. do.

As shown in FIG. 3, the housing 22 has a rectangular box structure and has an open top structure. In addition, the pressing plate 24 is installed on the open upper end of the housing 22 so as to be movable up and down of the housing 22. The pressing plate 24 is coupled to the enclosure 22 while keeping airtight in close contact with the inner surface of the enclosure 22. Accordingly, when the pressing plate 24 is pressed, air in the housing 22 is compressed by the pressing plate 24.

In addition, a side surface of the housing 22 facing the punching die 16 is formed with a spout 23 for ejecting air to the punching die 16 in a slit form along the longitudinal direction. Through holes 28 are formed in each of the punching dies 16 so as to communicate with the jet holes 23. Accordingly, the air blown out through the jet port 23 is blown into the punching die 16 through the through hole 28 to apply air pressure to the specimen inside the punching die 16.

The blocking plate 25 is formed integrally with the pressing plate 24 and extends along the side of the enclosure 22 in which the jet port 23 is formed. The blocking plate 25 has a slit-shaped connector 27 corresponding to the jet port 23 is formed to extend. Accordingly, when the blocking plate 25 is moved and the connector 27 formed in the blocking plate 25 communicates with the blower port 23 formed in the housing 22, the high-pressure air compressed in the inside of the housing 22 is released. Ejected to the outside.

In this embodiment, the lower plate of the upper press 12 is further provided with a pressing plate 13 for pressing the pressing plate 24 in a position corresponding to the pressing plate 24.

A lower end side of the housing 22 is provided with a supply pipe 29 for supplying air into the housing 22. The supply pipe 29 may be provided with an air pump for forced air supply.

On the other hand, the apparatus further includes a raised portion 30 for lifting the steel sheet P up when the upper press 12 again after cutting the specimen from the steel sheet (P).

The rising part 30 is installed on the side of the upper press 12, the extension plate 32 extending to the lower press 10 side, the teeth 34 formed on the inner end of the extension plate 32, the lower Ratchet wheel 36 is installed in the press 10 and the ratchet wheel 36 is fastened to the teeth 34 when the upper press 12 is lowered, the operating bar 38 is installed on the ratchet wheel 36 extending toward the steel sheet (P) , The lifting roll 40 installed on the operation bar 38 and positioned under the steel plate P, is installed between the operation bar 38 and the lower press 10 to return the operation bar 38 to its original position. A return spring 42.

Accordingly, when the upper press 12 is raised, the steel sheet P is lifted up by the rising part. Therefore, the steel sheet (P) is moved completely upward in the punching die 16, it is easier to discharge the specimen.

The extension plate 32 may be made of an elastic material itself, and in the present embodiment, the extension plate 32 is rotatably installed in the housing 31 installed at the upper press 12 side end. In addition, an elastic plate 33 for applying an elastic force to the extension plate 32 is further provided between the extension plate 32 and the inner surface of the housing 31. The extension plate 32 is rotated by the elastic force of the elastic plate 33 to be able to elastically fasten the teeth 34 formed on the front end to the ratchet wheel (36).

The ratchet wheel 36 is rotatably installed in the lower press 10 at a position corresponding to the tooth 34. The teeth 34 and ratchet wheels (ratchet) are meshed with each other by a mechanism for one-way rotation to rotate the ratchet wheel 36 in one direction.

The operation bar 38 is fixed to the ratchet wheel 36 to move together with the ratchet wheel 36. The upper end of the operation bar 38 extends toward the upper end of the lower press 10. And the lifting roll 40 is rotatably installed on the upper end of the operation bar 38 is arranged horizontally below the steel plate (P).

Accordingly, when the ratchet wheel 36 is rotated and the operation bar 38 moves, the lifting roll 40 installed on the operation bar 38 moves upward to lift the steel plate P.

The return spring 42 is for returning the lifting roll 40 to the original position. In this embodiment, the return spring 42 is installed inside the cylinder 43 and is compressed by the piston 44 of the cylinder. The cylinder 43 and the piston 44 are connected to the lower press 10 and the operation bar 38, respectively.

Hereinafter, the operation of the apparatus will be described.

When the steel plate P is moved and the upper press 12 is lowered with respect to the lower press 10 according to the operation of the driving cylinder 14, the punch 18 installed in the upper press 12 punches the lower press 10. The steel sheet P is pressed against the die 16 to cut the specimen from the steel sheet P. The specimen cut from the steel sheet P is sandwiched by the punching die 16 of the lower press 10.

When the upper press 12 descends, the pressing plate 13 installed on the upper press 12 presses the pressing plate 24. The pressing plate 24 is pressed into the housing 22 and the air supplied into the housing 22 through the supply pipe 29 is compressed by the pressing plate 24. Here, the blocking plate 25 formed on the pressing plate 24 is also lowered, so that the connector 27 formed on the blocking plate 25 passes downward through the spout 23 formed in the housing 22. Accordingly, the spout port 23 is blocked by the blocking plate 25 in a state in which the connector 27 formed in the blocking plate 25 and the spout 23 formed in the housing 22 are shifted from each other. Therefore, the air inside the housing 22 is compressed by the lowering of the pressing plate 24.

When the upper press 12 is completely lowered and the specimen is cut in the steel sheet P, the upper press 12 is raised again according to the operation of the driving cylinder 14. As the upper press 12 is moved upward, the pressing plate 24 pressed by the pressure plate 13 is lifted up by the elastic force of the elastic spring 26 inside the housing 22. Accordingly, the blocking plate 25 also rises, and the connector 27 formed on the blocking plate 25 coincides with the spout 23 formed in the housing 22 while the air compressed in the housing 22 communicates with each other. It blows out outside the enclosure 22 through the 27 and the blower outlet 23. The air jetted from the housing 22 is blown into the punching die 16 through the through hole 28 of the punching die 16 in communication with the jetting port 23. Therefore, the specimen cut in the steel sheet P and sandwiched inside the punching die 16 is lifted and separated from the punching die 16 by air ejected at high pressure.

As such, by injecting air into the punching die 16, the ejection pressure of the air prevents the specimen from being caught in the lower press 10 punching die 16 and the specimen is easily detachable from the punching die 16. Can be brought into position.

On the other hand, when the upper press 12 is lowered, the tooth plate 34 is caught by the ratchet wheel 36 as the extension plate 32 installed on the upper press 12 descends. The teeth 34 and the ratchet wheel 36 have a structure in which the teeth 34 are formed in opposite directions to rotate the ratchet wheel 36 only in one direction. As such, when the upper press 12 is raised again after the specimen manufacturing is completed in the state in which the teeth 34 are caught by the ratchet wheel 36, the ratchet wheel 36 is rotated while the teeth 34 are raised.

As the ratchet wheel 36 is rotated, the lifting roll 40 installed on the ratchet wheel 36 via the operation bar 38 is moved upward, thereby lifting the steel sheet P upward.

After the specimen is prepared in this way, the steel sheet P is completely lifted upwards to separate the steel sheet P, and thus, the steel sheet P is completely moved upwards from the punching die 16 to facilitate the discharge of the specimen.

Here, when the upper press 12 is fully raised, the teeth 34 are spaced apart from the ratchet wheel 36 to release the fastening state. The operating bar 38 is pulled downward by the elastic return force of the return spring 42 increased when the operating bar 38 is raised. Therefore, the rising roll 40 installed in the operation bar 38 is returned to the original position.

While the illustrative embodiments of the present invention have been shown and described, various modifications and alternative embodiments may be made by those skilled in the art. Such variations and other embodiments will be considered and included in the appended claims, all without departing from the true spirit and scope of the invention.

10: lower press 12: upper press
13: pressure plate 16: punching die
18: punch 20: pneumatic part
22: enclosure 23: spout
24: pressing plate 25: blocking plate
26: elastic spring 27: connector
28: through hole 29: supply pipe
30: rising part 32: extension plate
34: tooth 36: ratchet wheel
38: operation bar 40: lifting roll
42: return spring

Claims (4)

A lower press provided with a punching die for specimen manufacture, a punch provided at a position corresponding to the punching die, an upper press positioned above the lower press, a driving cylinder for pressurizing the upper press, and a punching die installed in the lower press; A pneumatic part separating the specimen prepared by blowing air with a punching die from the punching die,
The pneumatic part is provided in the housing which is installed along the punching die and the through hole formed in the side of the housing and formed in the punching die to blow out the air into the punching die, the upper end of the open housing Pressing plate pressed by the upper press to compress the air inside the housing, a blocking plate installed on the pressing plate in close contact with the inner surface of the housing and selectively communicating with the ejection opening, a resilience between the inner surface of the housing and the pressing plate An elastic spring to be installed, the steel sheet specimen manufacturing apparatus comprising a supply pipe connected to one side of the housing for supplying air into the enclosure. delete The method of claim 1,
The pneumatic part is a steel sheet specimen manufacturing apparatus further comprises a pressing plate is installed in a position corresponding to the pressing plate on the upper press to press the pressing plate. The method according to claim 1 or 3,
Further comprising a rising part for lifting the steel sheet upward when the upper press rises,
The rising part is provided on the side of the upper press extending plate extending to the lower press side, the tooth formed on the inner end of the extension plate, the ratchet wheel is installed on the lower press when the upper press descends, the ratchet wheel, the ratchet Steel bar specimen manufacturing apparatus including an operation bar installed on the wheel extending to the steel plate, the lifting roll is installed on the operation bar and positioned below the steel plate, the return spring is installed between the operation bar and the lower press to return the operation bar to its original position.

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