KR100827651B1 - Solenoid press - Google Patents

Abstract

A solenoid press is provided to mount a workpiece on a lower mold with ease by driving an upper mold in a vertical direction and a lower mold in back and forth directions. A solenoid press includes a lower plate(10) and an upper plate, a driving unit, an upper plate assembly(40), a lower plate assembly(50), and a cut piece delivery assembly(70). The lower plate and the upper plate are formed into a frame. A plurality of solenoids are arranged on the lower plate, and a solenoid shaft is joined to an elevating plate. The upper plate assembly includes an upper mold fixing board and an upper plate base(44) spaced apart from a lower mold through a rod(65). The lower assembly is arranged on a slide rail so as to allow for back and forth movement of a lower mold. The upper plate assembly is joined to the elevating plate through the rod. The cut piece delivery assembly includes a belt conveyor for conveying cut pieces dropped in the lower mold in back and forth directions.

Description

Solenoid press < RTI ID = 0.0 >

1 is a conceptual diagram for explaining an outline of the present invention;

FIG. 2A is a perspective view showing a press outline as a specific embodiment of the present invention. FIG.

FIG. 2B is an exploded perspective view of the upper part of the fixed upper plate of FIG.

Fig. 3 is a front view of the state in which the lower cover of Fig. 2 is removed. Fig.

Fig. 4 is a side view of the state in which the lower cover of Fig. 2 is removed. Fig.

Figure 5 is a plan view of the invention of Figure 2;

FIG. 6 is a structural cross-sectional view illustrating the mold stopper assembly of FIG. 2 according to the present invention. FIG.

7 is a process diagram for explaining a mold mounting step of the present invention.

8 is a process chart for explaining a press operation step of the present invention.

FIG. 9 is a schematic view of a flexible PCB illustrating a punch of a press of the present invention. FIG.

DESCRIPTION OF THE REFERENCE SYMBOLS

10: fixed bottom plate 20: fixed top plate

24: return spring 30:

32: Solenoid 33: Steel plate

40: upper plate assembly 42: upper mold holding member

44: upper plate base 50: lower plate assembly

51: slide rail 52: protruding / descending drive cylinder

54: lower plate base 55, 56: damper

57: stopper 60: mold setting driving part

61: fixed plate 62: pneumatic cylinder

65, 66, 67: load 68: mold escape cylinder

69: mold escape drive unit 70: cutting product transfer assembly

72: Roller drum 74: Conveyor belt

78, 88: drive motor 80: mold stopper assembly

82: lifting stopper 84: worm gear

86: Warm 90: Knockout Assembly

92: Knockout solenoid 94: Hammer

96: Mounting plate 100: Upper mold

200: Lower mold 300: Flexible PCB

310: Plate 320: scrap

330: semi-finished product (cut product)

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a solenoid press which performs a punching operation by the force of a solenoid driven by electric energy. More particularly, the present invention relates to a solenoid press which forms a plurality of solenoids in parallel to increase a pressing force, After the mold is moved to the lower mold, a pair of punching molds are formed. Since the punching mold is mounted on the outside of the punching mold, the workability and safety are greatly improved and the product and scrap are separated from the finished punching product and recovered To a solenoid press.

Known presses are largely classified according to their power sources, such as hydraulic presses, motorized presses using motor power, and manual presses using gravity.

In the case of the hydraulic press, it is suitable to press relatively large workpieces according to the design of hydraulic pressure, and electric and manual presses generate momentary force to press relatively small workpieces.

In order to solve the disadvantages of the presses, the present inventor has found a press using a solenoid force as in Patent Registration No. 246954.

According to the patent of the present inventor, a solenoid press of a new concept that can be used for a desk can be miniaturized to be suitable for work such as bending, cutting, and punching by using a solenoid driving force.

However, the inventor of the present invention has a merit that the amount of electric power for driving the solenoid can be adjusted by adjusting the amount of electric power so that the hitting power can be adjusted. However, since the hitting force can not be structurally supported, there was.

However, solenoid presses are still superior in terms of durability, ease of installation, and control of braking force compared to hydraulic, all-synchronous and manual presses.

The present invention has been made in order to supplement the solenoid press of the present inventor registered in advance, and has the following purpose.

The present invention relates to a solenoid press capable of easily lifting and lowering an upper mold in a pair of molds, lowering the mold in a forward and backward direction, .

The present invention provides a solenoid press in which a plurality of solenoids for providing press power are formed in parallel to increase the pressing force.

In the present invention, when a part to be used in a punch product is mixed with a part to be dismantled, a part is dropped at the time of punching, and the remaining part is dropped in the knockout drive, so that a solenoid press .

The present invention relates to a solenoid press which is provided with a pneumatic cylinder for downward driving an upper mold so as to be able to precisely adjust the gap between the molds when mounting the upper and lower molds for punching, .

According to an aspect of the present invention, there is provided a method of manufacturing a metal mold, including a stepping motor driving unit including a plurality of solenoids, an upper mold to be lowered by the driving force of the tractive force driving unit, a lower mold having a pair of the upper mold, A mold setting driving unit for moving the upper mold to set the upper and lower molds; and a mold driving unit for moving the upper and lower molds when the upper and lower molds are not engaged with each other And a mold-cavity-driving unit for making the mold cavity drive unit operate.

Hereinafter, the technical idea of the present invention will be described in detail with reference to the accompanying drawings.

The present invention relates to an upper mold for lifting up and down by a solenoid driving force as shown in FIG. 1, and a lower mold for pairing with the upper mold and for press-forming a punch, and the mold is mounted on an upper portion of the rail And it is driven to come and go before and after it as an appearance-and-appearance driving unit made up of a pneumatic cylinder.

Hereinafter, the structure of a specific embodiment of the present invention will be described in more detail.

2 to 5 show a solenoid press configuration as a specific embodiment of the present invention.

A plurality of solenoids (32) are horizontally disposed on the lower fixed plate (10) to fix the lower plate (10) and the fixed upper plate (20) A driving force control section (30)

A top plate assembly 40 comprising an upper mold base 42 and an upper mold base 42 fixed to the upper mold 100 by a rod 65 and spaced apart from the lower mold,

The upper plate assembly 40 is mounted on the lifting plate 33 of the hitting drive part 30 by the lower plate assembly 50 fixed to the slide rail to fix the lower mold 200 and to protrude / (65), and a cutter conveying assembly (70) including a belt conveyor for conveying the cut articles falling down to the lower portion of the lower die in forward and backward directions. The fixed upper plate (20) A plurality of return springs 24 are coupled between the lifting plate 33 and the lifting plate 33 and the upper mold is returned to the raised position.

A fixed middle plate 61 is fixed by a rod 66 so as to set upper and lower dies under the fixed upper plate 20. The pneumatic cylinder 62 is coupled to the upper portion of the fixed middle plate 61, And a mold setting driver 60 configured to push down the surface of the lifting plate 32 through the fixing middle plate 61. As shown in FIG.

A lifting stopper 82 for adjusting the position of the lifting plate 33 and adjusting the position of the lifting plate 33 so as to set a precise pressing position of the lifting plate 33 is provided below the lifting plate 33 of the driving force driving unit 30, A mold stopper assembly 80 composed of a worm 86 for driving the worm gear to rotate and a driving motor 88 is coupled to the fixed bottom plate 10, .

A knockout solenoid 92 is coupled to a mounting plate 96 fixed to the stationary upper plate 20 by a rod 67 so that the hammer 94 is coupled to the end of the solenoid shaft, And a knockout assembly (90) for dropping the cut product by hitting the upper die assembly by passing the cutout assembly (44).

A mold escape drive unit 69 for raising the lifting plate 33 with the axis of the pneumatic cylinder 68 to raise the upper mold manually when the upper and lower dies can not be separated after the punching, .

5, the lower plate assembly 50 is mounted on the slide rail 51 coupled to the stationary upper plate 20 and coupled to the lower plate base 54 so as to protrude and retract, Dampers 55 and 56 are coupled to the lower plate base 54 by coupling a plurality of protruding and lowering driving cylinders 52 to the opposite upper and lower driving cylinders 52, The damper 55 is configured to buffer the damper 56 in a state in which the damper 55 is retracted so that the upper and lower dies are aligned with each other and a stopper 57 for restricting the backward position of the lower plate base 54 And fixed to the upper plate 20.

The cut product conveyance assembly 70 includes a conveyor belt (not shown) extending from the lower mold protruding axis line and forming a roller drum 72 rotating forward and backward, a timing belt surrounding the roller drum and preventing slippage 74 are closed and coupled by a drive motor 78 so as to be conveyed and driven.

Reference numeral 24 denotes a guide bushing 24 for supporting the lifting and lowering of the rod 65, reference numeral 36 denotes a fixed middle plate 61 for restoring the lifting plate 33 and a damper for relieving the impact, reference numeral 53 denotes a damper 55, 58 denotes a scrap drop discharge hole formed in the lower plate base 54, and 76 denotes a duct positioned below the conveyor belt 74 to prevent the cut product from falling off.

Hereinafter, the operation of the present invention constituted as described above will be described in more detail.

The description of the operation of the present invention assumes the pressing of a flexible PCB or the like which requires machining in a clean room and mass production of small items together with precision machining as illustrated in Fig.

The conventional flexible PCB 300 is formed of a multilayer printed circuit board, and a circuit of a fine line width is designed to be complicated so as to directly mount an electronic part on a near-end PCB. In general, And the semi-finished product 330 is assembled.

The semi-finished product 330 to be obtained from the PCB has a shape in which a part of the inner space is cut and discarded along with the cutting on the plate 310, that is, a plate remaining after punching and a scrap 320, .

First, as shown in FIG. 7, the upper and lower plate bases 44 and 54 are provided with a mold, as shown in FIG. 7, in a process of mounting a pair of upper and lower dies 100 and 200 having a knockout extraction structure, Each is mounted and the mold is set correctly.

At this time, when the pneumatic cylinder 62 of the mold setting driving part is driven to observe the degree of the pawl being engaged by the pair of upper and lower molds, the cylinder shaft descends and the lifting plate 33 descends and interlocks with the rod 65 are pulled to lower the upper plate assembly 40 and adjust the degree of engagement of the mold.

When the worm gear 84 is rotated by the driving motor 88 of the mold stopper assembly 80 to limit the degree of descent of the upper mold in the mold setting, a lift stopper 82 engaged with the worm gear as a lead screw The lowering position of the upper mold 100 can be adjusted by setting the lowering position of the lifting plate 33 by setting the lowering position at the desired position. The width of the stopper 86 of the mold stopper assembly 80 can be set by adjusting the height of the stopper while checking the accumulated amount of the number from the outside by combining a normal speed cable with a numerically integrated numerical counter. "Is configured to be engaged so as to move the stopper height change 0.04 mm.

When the protruding and lowering driving cylinder 52 is operated after the mold setting is performed, the shaft of the cylinder pushes down the lower plate base 54 to move the lower mold 200 forward from the upper mold lower position And is transported along the slide rail 51.

(Not shown) on the lower mold while the lower mold is advanced, and the cylinder 52 is reversely driven so that the lower mold is brought into contact with the upper mold, The lower surface of the lower plate base 54 is accurately moved to the position of the set stopper 57 and stopped.

When the lower mold is moved backward at the correct position, the solenoid 32 of the driving unit 30 is driven. At this time, a plurality of solenoids are connected to the lifting plate 33 in parallel and the lifting plate 33 is moved downward And the top plate assembly 40 is lowered through the connected rod 65 to accurately hit the tongue plate 310 on which the upper and lower dies 100 and 200 are mounted. The lifting plate 33 is moved upward by the force of the lifting plate 24 to finish punching.

If the cut position of the punched semi-finished product 330 is closely observed and the punching depth or the like is to be readjusted, the mold stopper assembly 80 may be readjusted as described above, And the mold installation is completed.

The manual operation of all the driving units is performed by a switch operation of a control box provided separately.

Now, the punching operation will be described with reference to FIG.

After the mold setting is completed as described above, full-scale product stamping is performed.

Punching proceeds in a sequential semi-automated process.

When a driving switch (not shown) is actuated after the punching product is mounted on the lower mold, when the lower mold is moved backward and moved to the position corresponding to the upper mold and the movement is completed, the punching operation is performed by driving the solenoid 32 The upper die is returned.

After returning to the upper mold, the lower mold is slid by the protruding and lowering driving cylinder 52 and is advanced, and at the same time, the conveying conveyor belt 74 of the cut product conveying assembly 70 is conveyed in one direction for a set time to recover the scrap generated during the punching The scrap 320, which is driven to be dropped and discharged to the opening of the lower mold, is transferred to one side and collected in the recovery box or the like.

After the completion of the lower mold advancement, the solenoid 92 of the knockout assembly 90 is driven and the semi-finished product 330 inserted in the upper mold 100 is taken out and dropped onto the conveyor belt 74, A set of processes that are performed in a reverse direction for the set time to be collected to the other side are completed as a single operation process.

Thereafter, the punched product is aligned with the lower mold, and the punch is repeated while the above-described working process is repeated.

On the other hand, there is a case where the upper and lower dies are not separated from each other due to the foreign matter being caught in the dies or other reasons while performing the one-time work process including the dummy product, When the mold escape pneumatic cylinder 68 of the mold escape drive part 69 is driven by an external operation, the cylinder shaft is forcibly pushed up by the lowered steel plate 33 so that the mold escape .

As described above in detail, according to the present invention, the upper mold is elevated and lowered in a pair of press dies, the lower die is driven to protrude and retract in the forward and backward directions, It is possible to easily attach the lower mold to the lower mold, and in the state where the lower mold is detached, the upper mold can not be driven to punch, so that the safety of the operator is greatly improved. In this case, the part is dropped at the same time as the punching, and the remaining part is dropped in the knockout drive, so that the conveying belt is collected and collected at the lower part of the mold to maximize the punching work efficiency. .

In addition, when the gap between the molds is small in a normal press in which the upper and lower molds are fixed on the uniaxial line and the state of the mold is required, it is necessary to separate and observe the mold. In the present invention, And a pneumatic cylinder for downward driving the upper mold so that the gap between the molds can be precisely adjusted in the mounting of the upper and lower molds for punching is added to control the mold gap in the mold mounting process And since it is operated mainly by electric power, it is a lightweight structure because it excludes an accessory equipment such as a hydraulic pressure, and is an invention having various excellent effects such as easy installation and maintenance.

Claims (8)

delete Wherein the upper die is a pair of upper and lower dies which are raised and lowered by a solenoid driving force and a lower die which is paired with the upper die and presses a punching product and the lower die is driven to protrude and retract from the position immediately below and below the upper die, , The press is formed by fixing the lower fixed plate 10 and the fixed upper plate 20 by frame and a plurality of solenoids 32 are horizontally disposed on the lower fixed plate 10 and the solenoid axes are coupled to the lifting plate 33 by a downward driving force. A driving force control section (30) A top plate assembly 40 comprising an upper mold base 42 and an upper mold base 42 fixed to the upper mold 100 by a rod 65 and spaced apart from the lower mold, The upper plate assembly 40 is mounted on the lifting plate 33 of the hitting drive part 30 by the lower plate assembly 50 fixed to the slide rail to fix the lower mold 200 and to protrude / (65), and a cutter conveying assembly (70) including a belt conveyor for conveying the cut articles falling down to the lower portion of the lower die in forward and backward directions. The fixed upper plate (20) And a plurality of return springs (24) are coupled between the lift plate (33) and the lift plate (33) so that the upper die is returned to the raised position. The pneumatic cylinder according to claim 2, wherein the fixing middle plate (61) is fixed by a rod (66) so as to set the upper and lower dies under the fixed upper plate (20) And the pneumatic cylinder shaft further comprises a mold setting driving unit (60) configured to penetrate the fixed middle plate (61) and press down the surface of the lift plate (32). The lowering position of the lifting plate (33) is limited so as to set a precise pressing position of the punching die in the lower portion of the lifting plate (33) of the power driving unit (30) A mold stopper assembly 80 composed of a stopper 82, a worm gear 84 for moving the worm gear 84 up and down, a worm 86 for driving the worm gear to rotate and a drive motor 88, 10. The solenoid press as claimed in claim 1, The knockout solenoid 92 is coupled to the mounting plate 96 fixed to the stationary upper plate 20 by the rod 67 so as to mount the hammer 94 on the end of the solenoid shaft. And a knockout assembly (90) for dropping the cut product by striking the upper die assembly by passing through the upper plate base (44). [3] The mold according to claim 2, wherein the upper fixed plate (10) is a mold for lifting the lifting plate (33) with the pneumatic cylinder (68) to elevate the upper mold manually when the upper and lower dies And an escape drive part (69) are further combined to constitute the solenoid press. The lower plate assembly (50) according to claim 2, wherein the lower plate assembly (50) is mounted on a slide rail (51) coupled to the fixed top plate (20) The dampers 55 and 56 are formed in the stationary upper plate 20 in such a manner that the cylinder shaft is coupled with the lower plate base 54 and the buffering directions are opposite to each other. The damper 56 is configured to buffer the damper 55 in a state in which the damper 55 is retracted such that the upper and lower dies coincide with each other and a stopper 57 for restricting the backward position of the lower plate base 54 is fixed to the upper Wherein the solenoid press is coupled to the solenoid valve. The apparatus according to claim 2, wherein the cutting article transfer assembly (70) is formed by extending the lower mold protruding axis line and includes a roller drum (72) formed in a front and rear direction, a timing belt surrounding the roller drum and preventing slippage And a drive motor (78) for closing the conveyor belt (74) and providing a rotational force to the one roller drum is formed and driven to be conveyed.

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