KR20030048731A - Piercing apparatus for thin plate - Google Patents

Abstract

PURPOSE: A piercing apparatus is provided to improve productivity and to reduce a fault rate of an article and accidents by piercing a plurality of holes aligned in a thin plate structure in a circular pattern through rotating a thin plate structure. CONSTITUTION: A piercing apparatus includes an upper mold(2) formed with a plurality of punches(201). A plurality of dies are provided to support a lower portion of a thin plate structure. A fixing table is mounted on a center of the thin plate structure mounted on the dies(3). The fixing table has an upper cylinder and a lower cylinder. A circular hole is formed at a center of the upper cylinder and a perforation hole is formed from the circular hole to the lower cylinder. A supporting plate(4) is provided to support the dies(3) and the fixing table. A ratchet wheel is installed at the lower cylinder. A bushing(7) is positioned in an extension part of the ratchet wheel. A rotating rod(8) is installed at an upper end of a protruding wheel of the bushing(7). A rotating device is provided to rotate the ratchet wheel. A fixing device is installed on the fixing table so as to fix the thin plate structure.

Description

Piercing apparatus for thin plate

The present invention relates to a piercing device of a thin plate structure, and more particularly, when the upper die is raised after punching the hole down, the plate die is automatically rotated at a fixed angle to the plate structure fixed to the fixed base, then the prize money When the mold is lowered, another hole is drilled at a predetermined distance from the punched hole, and by repeatedly performing the same operation, the sheet structure of the thin plate structure can be punched in a single setting. It relates to a piercing device.

In general, a thin plate structure is press-molded to have a predetermined shape through a deep drawing process. For example, in the case of a turbine shell, as shown in FIG. Holes formed in multiples.

Conventionally, in order to process such a turbine shell, a reference hole (H) is formed in a thin plate structure (X) having a predetermined shape through a deep drawing process, and the shape of the thin plate structure using the reference hole (H). After setting the thin plate structure on a die having a piercing operation by lowering the upper die, the upper die was raised, and the piercing operation was performed by resetting the thin plate structure using the perforated holes. Therefore, when drilling circularly arranged holes at a certain angle, it is necessary to set as many as the number of holes, and there is a high possibility that worker fatigue due to repetition of the same work and safety accidents due to carelessness may occur. There is a problem.

The present invention is devised to solve the conventional problems as described above, the object of which is that the thin plate structure set in accordance with the Shanghai Song of the upper mold is rotated at a certain angle so as to perforate multiple holes arranged circularly in one setting. By providing a piercing device for a thin plate structure that can improve productivity and reduce safety accidents due to product failure rate and carelessness of an operator.

The present invention for achieving the above object is provided with a ratchet wheel at the lower end of the fixing plate to which the thin plate structure is fixed, and the ratchet wheel chain from one side of the ram to send the upper mold with a punch having different angles; Rotating the ratchet wheel at a certain angle when the ram is raised by connecting it with the rotating rod, and allowing the fixing rod connected to it to rotate so that the thin plate structure set at the fixing rod rotates by a certain angle to punch a plurality of circularly arranged holes in one setting. It is configured to do so.

1 is a front view showing the configuration of the present invention

Figure 2 is a side view illustrating the configuration of the present invention

Figure 3 is a plan view showing the configuration of the present invention

Figure 4 is a plan view showing the installation position of the die according to the present invention

Figure 5 is an exemplary side view showing the configuration of the rotating means according to the invention

6 is an exemplary view showing the configuration and release state of the fixing means according to the invention

7 is an exemplary view showing a fixed state of the thin plate structure using the fixing means according to the present invention.

Figure 8 is an exemplary view showing the shape of the thin plate structure perforated by the present invention

<Description of the symbols for the main parts of the drawings>

(1): RAM (2): Prize mold

(3): die (4): support plate

(5): Fixture (6): Ratchet Wheel

7: Bushing 8: Rotating Rod

(9): Fixed bracket (10): Jaw

(11): working rod 12: press block

(13): inclined block (14): working block

15: cylinder 15 ': rod

(16): cylindrical bracket (17): connecting rod

(18): Drop prevention block (19): Chain

(20): chain gear (21): connecting shaft

(22): tension spring (23): stopper

(24): spring holder (25): reverse rotation preventing ratchet

(26): fixed block (51): protrusion

(52): upper cylinder (53): lower cylinder

(54): cylindrical hole 55: through hole

61: extension portion 71: protruding wheel

(81): circular ring 91: ratchet

101: first inclined surface 121: first inclined portion

131: second inclined surface 141: second inclined portion

161: opening 162: insertion hole

171: locking jaw 172: locking member

201: Punch 202: Pushpin

211: first connector 212: second connector

100: first spring 200: second spring

300: third spring 400: fourth spring

(X): sheet structure (H): reference hole

Referring to the configuration of the present invention in conjunction with the accompanying drawings as follows.

1 is a front view showing a configuration of the present invention, Figure 2 is a side view showing a configuration of the present invention, Figure 3 is a plan view showing a configuration of the present invention, Figure 4 is a die according to the present invention Figure 5 is a plan view showing the installation position of the side, Figure 5 is a side view illustrating the configuration of the rotating means according to the invention, Figure 6 is an illustration showing the configuration and release state of the fixing means according to the present invention, 7 shows an exemplary view showing a fixed state of the thin plate structure using the fixing means according to the present invention, the present invention is a piercing device of the thin plate structure, the thin plate structure (X) of the prior step (dip drawing) The upper mold (2) having a shape on the bottom and provided with a plurality of punches 201 at different angles, and a shape corresponding to the bottom of the upper mold (2) to support the thin plate structure (X) at the lower end. With a number of dies 3, A holding table 5 to which the thin plate structure X seated on the die 3 is fixed, a support plate 4 installed on the body B to support the die 3 and the holding table 5, and the holding table Ratchet wheel (6) provided at the lower end of the (5), a rotating rod (8) for rotating the ratchet wheel (6), one side end of the ram (1) provided with the upper die (2) and the rotating rod (8) By means of a rotating means for rotating the ratchet wheel 6 by operating the rotary rod 8 when the ram 1 is raised, and by a cylinder 15 installed in the holder 5. It consists of a fixing means for operating to secure the thin plate structure (X).

The plurality of punches 201 installed in the upper mold 2 are perforated at different radii from the center of the thin plate structure X, and when the thin plate structure X is perforated while rotating one time, the circular arrays have different radii. It was configured to drill a hole.

In addition, in order to more firmly fix the thin plate structure (X) during the piercing operation, the push rod 202 is installed to penetrate the center portion of the upper die (2), the first between the push rod 202 and the ram (1) The spring 100 was installed.

The die 3 is installed so that the number corresponding to the number of the punch 201 installed is located at the lower end of each punch 201 to support the thin plate structure (X) at the lower end when punching the punch 201, the punch ( 201).

The stator 5 is a two-stage cylindrical body in which the upper cylinder 52 and the lower cylinder 53 are integrally formed. The upper cylinder 52 is connected to the support plate 4, and the ratchet wheel 6 is attached to the lower cylinder 53. ) Is installed, the upper cylinder 52 was formed to have a larger diameter than the lower cylinder (53). In addition, a cylindrical hole 54 is formed in the center of the upper cylinder 52, a through hole 55 penetrating the lower cylinder 53 from the bottom of the cylindrical hole 54 is formed, the upper cylinder 52 In order to facilitate fixing of the thin plate structure (X), a protrusion 51 is inserted into the reference hole X formed in the thin plate structure (X).

The fixing means is to fix the thin plate structure (X) seated on the holder (5) and the die (3), a plurality of jaws (10) hinged to the fixing block 26 is inserted into the cylindrical hole (54) And, the operating rod 11 installed to penetrate the cylindrical hole 54 and the through-hole 55, and the pressure block 12 is installed on the upper end of the operating rod 11 to press the jaws 10 from the top and , The inclined block 13 installed at the lower end of the actuating rod 11, the actuating block 14 installed at the end of the rod 15 ′ of the cylinder 15 installed in the main body B, and the inclined block 13. And a second spring 200 installed between the lower cylinder 53.

The third spring 300 is installed between the outer side of the lower end of the jaw 10 and the inner surface of the upper cylinder 52, the first inclined surface 131 is formed inside the upper end of the jaw 10, the pressure block When the first inclined portion 121 corresponding to the first inclined surface 131 is formed at the lower end of the 12, and no external force acts on the actuating rod 11, the actuating rod is caused by the repulsive force of the second spring 200. 11 is lowered, and the pressure block 12 installed at the upper end of the operating rod 11 is also lowered. Therefore, the first inclined portion 121 formed in the pressing block 12 is slid to the first inclined surface 131 and simultaneously press the jaws 10 to fix the thin plate structure (X).

A second inclined surface 131 is formed at the lower end of the inclined block 13, and a second inclined portion 141 corresponding to the second inclined surface 131 is formed in the operation block 14 to the cylinder 15. When the operation block 14 is moved forward, the second inclined portion 141 of the operation block 14 and the second inclined surface 131 of the inclined block 13 are slid, and the inclined block 13 is raised. When the inclined block 13 rises as described above, the pressure block 12 holding the jaws 10 rises to release the jaws 10 that fix the thin plate structure X.

That is, the jaw 10 is fixed to the thin plate structure (X) when the operating block 14 and the inclined block 13 is spaced apart, the inclined block 13 is the operating block 14 and the inclined block 13 The contact is to release the fixing of the thin plate structure (X).

The ratchet wheel 6 is fixed to the lower cylinder 53 of the holder 5 to rotate the holder 5 at a predetermined angle when the ram 1 is raised, and an extension part 61 extending downward in the center portion. Is formed, and the bushing (7) is installed in the extension portion 61, one side of the rotating rod (8) is connected to the bushing (7) thus installed. In addition, a protruding wheel 71 is formed at the center of the bushing 7 to prevent the rotary rod 8 from sagging downward.

The rotating rod (8) rotates the ratchet wheel (6) when the ram (1) is raised, a circular ring 81 surrounding the bushing (7) is formed at one end thereof is installed in the bushing (7) The upper surface of the central portion is provided with a fixing bracket (9), the ratchet 91 in the interior of the fixing bracket (9) by the fourth spring 400 is ratchet wheel (6) in the forward rotation of the rotary rod (8) Is rotated).

In addition, on the opposite side of the ratchet wheel 6 in which the rotary rod 8 is installed, a reverse rotation preventing ratchet 25 is installed in the main body B so as to engage with the ratchet wheel 6. It is configured to prevent the wheel 6 from rotating in reverse rotation.

The rotating means connects the rotating rod 8 and the ram 1 to rotate the rotating rod 8 at a predetermined angle when the ram 1 is raised, and the rotating rod 8 installed at one side of the bushing 7. The coupling shaft 21 installed to penetrate the other end of the coupling member, the first and second connectors 211 and 212 provided at the central and lower ends of the connecting shaft 21, and the side of the connecting shaft 21. A spring holder 24 provided on the main body B, a stopper 23 provided at a position adjacent to the rotation rod 8 of the main body B on the spring holder 5 side, the first connector 211 and a spring; A tension spring 22 for connecting the fixing stand 24, a chain gear 20 installed on the main body B so as to be located on the other side of the side of the connecting shaft 21, and a vertical position of the chain gear 20. Cylindrical bracket 16 installed on one side of the ram 1 and one side is connected to the cylindrical bracket 16 so that the engaging member 172 is installed in the center portion One side is connected to the rod 17, the drop preventing block 18 installed in the main body B so that the connecting rod 17 penetrates and is located at the lower end of the locking member 172, and the second connector 212. And a chain 19, the other side of which is connected to the connecting rod 17 via the chain gear 20.

The cylindrical bracket 16 has a hollow inside and has an opening 161 formed at one side thereof, and an insertion hole 162 is formed at the other side thereof to insert the connection rod 17 therein, and the cylindrical bracket 16 is inserted into the cylindrical bracket 16. When the engaging jaw 171 is formed at the end of the connecting rod 17 and the ram 1 rises above a certain height, the engaging jaw 171 is caught by the insertion hole 162 of the cylindrical bracket 16 and the connecting rod ( 17 is raised to pull the chain 19 in the vertical direction, the chain 19 pulls the connecting shaft 21 in the direction of the chain gear 20 through the chain gear 20, the connecting shaft ( Rotating rod 8 is installed 21 is to rotate about the bushing (7).

In addition, when the ram 1 is lowered, the rotating rod 8 is restored by rotating in the reverse direction by the tension spring 22, and at this time, the stopper 23 is reversed only to a predetermined position.

Referring to the configuration as described above the operation of the present invention.

The thin plate structure X formed in a predetermined shape through a deep drawing process is seated on the die 3 installed on the support plate 4 so as to be positioned around the holder 5 and the holder 5, and the plate structure X The plate structure (X) is set by inserting the protrusion 51 of the holder 5 into the reference hole X formed in advance. At this time, the operation block 14 connected to the cylinder 15 is located at the lower end of the inclined block 13, and thus, the jaws 10 remain open and the cylindrical bracket according to the ram 1 is located at the top dead center. The chain 19 is kept in the pulled state by the 16.

After the thin plate structure X is seated as described above, when the cylinder 15 is retracted by operating a switch not shown, the operation block 14 is spaced apart from the inclined block 13, and the inclined block 13 is The installed operating rod 11 is lowered by the second spring 200, and the jaws 10 are fixed to the thin plate structure X by the pressure block 12 installed at the upper end of the operating rod 11.

Then, when the upper mold 2 installed on the ram 1 descends to press the thin plate structure X seated on the die 3, the plurality of punches 201 installed on the upper mold 2 are die 3. It is inserted into the receiving space formed in the) is to pierce the thin plate structure (X). At this time, the push rod 202 installed in the center of the upper mold (2) is pressed by the pressure block 12 at the upper end of the pressure block 12 to more securely the thin plate structure (X) when piercing work thin plate structure (X) ) Is prevented from flowing, and a plurality of punches 201 are installed at different angles and positions in the upper mold 2 so that a plurality of holes can be drilled at a time.

In addition, the cylindrical bracket 16 installed on one side of the ram (1) is lowered with the ram (1), and the connection rod (17) inserted into the cylindrical bracket (16) is also lowered, with a certain height After the lowering, the engaging member 172 installed in the center of the connecting rod 17 is caught by the drop preventing block 18 installed in the main body (B), the connecting rod 17 stops falling.

In addition, the chain 19 connecting the lower end of the connecting rod 17 and the connecting shaft 21 is pulled by the tension spring 22 connected to the connecting shaft 21, the connecting shaft 21 is installed Rotating rod (8) is rotated in the reverse direction around the holder (5), is stopped by the stopper 23 after a certain angle rotation to achieve a standby state that can rotate the thin plate structure (X) for the subsequent process do.

When the ram 1 is raised after the first piercing operation as described above, the connecting rod 17 connected to the cylindrical bracket 16 is raised by the cylindrical bracket 16 to pull the chain 19 vertically, The chain 19 pulls the connecting shaft 21 in the direction of the chain gear 20 through the chain gear 20 to rotate the rotation rod 8 in the forward direction.

When the rotary rod 8 is rotated, the ratchet 91 mounted on the fixing bracket 9 installed on the upper surface of the central portion of the rotary rod 8 rotates the ratchet wheel 6, and the ratchet wheel 6 is rotated. The thin plate structure (X) fixed by the jaws 10 on the upper end of the mounting fixture (5) is to be rotated at an angle with the fixing member (5).

When the upper mold (2) is lowered again to perform a piercing operation, the rotary rod 8 is rotated in the reverse direction to achieve a standby state that can rotate the ratchet wheel (6), at this time reverse rotation preventing ratchet (25) Is to prevent the ratchet wheel 6 from rotating in the reverse direction by the rotation rod 8 so as to perform a more precise piercing operation.

By repeating the above-described process, the thin plate structure (X) is perforated while rotating one time, so that a plurality of holes circularly arranged in different radii can be perforated.

The rod of the cylinder 15 may also be automatically retracted after the number of piercings of the upper die 2 is counted to drill the number of holes of interest.

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

As described above, in the present invention, a plurality of punches are installed at different angles and positions in an upper mold, and a ratchet wheel is installed at a lower end of a fixing plate on which a thin plate structure is fixed, and a rod having a ratchet for rotating the ratchet wheel. The virtual mold is connected to one side of the ram is installed by the chain and the connecting rod is configured to rotate the thin plate structure at an angle when the ram is raised can complete the piercing work in one setting, thereby improving productivity, It is effective to prevent safety accidents.

Claims (5)

In the piercing device of the thin plate structure (X), The upper mold (2) having a shape of the thin plate structure (X) through the deep drawing on the bottom surface and a plurality of punches 201 are provided at different angles, A plurality of dies (3) having a shape corresponding to the bottom surface of the upper mold (2) to support the thin plate structure (X) at the lower end, It is installed to be located in the center of the thin plate structure (X) seated on the die 3, the upper cylinder 52 and the lower cylinder 53 is formed integrally, the cylindrical hole 54 in the center of the upper cylinder 52 ) Is formed, a through hole 55 penetrating the lower cylinder 53 from the cylindrical hole 54 is formed, the fixing table 5 to which the thin plate structure X is fixed, Located on the lower end of the plurality of die (3), and installed on the body (B) so that the upper cylinder (52) of the holder (5) and support plate (4) for supporting the die (3) and the holder 5 and , A ratchet wheel 6 installed in the lower cylinder 53 of the fixing stand 5 and having a cylindrical extension 61 in the central lower shelf; A bushing 7 installed at the extension 61 of the ratchet wheel 6 and having a protruding wheel 71 formed at the center thereof; A circular ring 81 is provided at one side to be installed at an upper end of the protruding ring 71 of the bushing 7, and a fixing bracket 9 in which a ratchet 91 is installed by a fourth spring 400 on an upper surface of a central portion thereof is provided. Installed rotating rod (8), Rotating means for rotating the ratchet wheel (6) by connecting the one end and the rotating rod (8) of the ram (1) in which the upper mold (2) is installed to operate the rotating rod (8) when the ram (1) is raised; The piercing device of a thin plate structure, characterized in that the fixing means for fixing the thin plate structure (X) by operating by a cylinder (15) installed in the holder (5) installed in the body (B). The method of claim 1, The rotating means includes a connecting shaft 21 installed to penetrate the other end of the rotating rod 8 provided with a circular ring 81 at one side, and first and second installed at the central and lower ends of the connecting shaft 21, respectively. Installed in the position adjacent to the connector, the spring holder 24 provided in the main body (B) to be located on one side of the side of the connecting shaft 21, and the rotation rod 8 of the main body (B) of the spring holder 24 A stopper 23, a tension spring 22 for connecting the first connector 211 and the spring holder 24, and a chain gear installed in the main body B so as to be located at the other side of the side of the connecting shaft 21 ( 20), a cylindrical bracket 16 installed on one side of the ram 1 to be located in the vertical direction of the chain gear 20, and one side is installed on the cylindrical bracket 16, the locking member 172 in the center portion Drop rod installed in the main body (B) so that the connection rod 17 is installed, and the connection rod 17 penetrates and is located at the lower end of the locking member 172. It is composed of a block 18 and a chain 19, one side of which is connected to the second connector 212 and the other of which is connected to the connecting rod 17 via the chain gear 20 to rotate when the ram 1 is raised. A piercing device for sheet metal, characterized in that configured to rotate the rod (8) at an angle. The method of claim 1, The fixing means is hinged to the fixing block 26 and the plurality of jaws 10 inserted into the cylindrical hole 54 formed in the fixing table 5, the lower end of the jaws 10 and the upper cylinder 52 The third spring 300 provided between the inner surface, the operating rod 11 installed to pass through the cylindrical hole 54 and the through hole 55, and the jaw 10 is installed on the upper end of the operating rod 11 Pressing block 12 for pressing from the top, the inclined block 13 installed on the lower end of the operating rod 11, and the operation block 14 installed on the end of the rod of the cylinder 15 installed in the main body (B) And a second spring 200 installed between the inclined block 13 and the lower cylinder 53 to fix and release the thin plate structure X by the operation of the cylinder 15. Piercing device of thin plate structure. The method of claim 1, The rotating rod 8 is installed to be engaged with the ratchet wheel 6 in the opposite main body (B) is installed, characterized in that it comprises a reverse rotation preventing ratchet (25) to prevent the reverse rotation of the ratchet wheel (6) Piercing device of thin plate structure. The method of claim 3, wherein A first inclined surface 131 is formed inside the upper end of the jaw 10, and a first inclined portion 121 corresponding to the first inclined surface 131 is formed at the lower end of the pressing block 12, and the inclined surface is formed. A second inclined surface 131 is formed at the lower end of the block 13, and a second inclined portion 141 corresponding to the second inclined surface 131 of the inclined block 13 is formed in the operation block 14. A piercing device for a thin plate structure, characterized in that.