KR880000952B1 - Press apparatus having working surface constituted by fiaating plate - Google Patents

Abstract

No content.

Description

Equalization press device

1 to 3 are side views of major part cuts showing examples of hydraulic press apparatuses as press apparatuses, respectively.

4 is a side view corresponding to FIG. 2 showing a state of warpage.

FIG. 5 is a side view corresponding to FIG. 2 of a hydraulic press apparatus as a press apparatus showing one embodiment of the present invention. FIG.

6 is an enlarged cross-sectional view of the movable table shown in FIG.

7 is a side view corresponding to FIG. 5 showing another embodiment of the present invention.

8 is an enlarged cross-sectional view corresponding to FIG. 6 showing another embodiment of the present invention.

9 is a plan view of the movable table shown in FIG.

FIG. 10 is an enlarged cross-sectional view corresponding to FIG. 8 showing yet another embodiment of the present invention. FIG.

FIG. 11 is a plan view corresponding to FIG. 9 of the movable table shown in FIG.

Next, the present invention will be described with reference to the drawings.

Furthermore, the same reference numerals are used to refer to the same or similar parts in the related art, and thus redundant description is omitted.

5 and 6 are views showing one embodiment of the present invention taking the hydraulic press device as an example.

In the hydraulic press device 30 as this press device, a space chamber 32 is formed in the movable table 31.

That is, the movable table 31 is mainly divided into the working table 33 and the movable table main body 34, so that a wide space sealing chamber 32 is provided according to the plane size of both working surfaces 10. In accordance with the presence of the space chamber 32, the work table 33 is floating plated.

The spacing chamber 32 has a height h of a space independent of the outer space provided between the work table 33 and the movable table body 34 corresponding to the plane size of the work surface 10, which is about several millimeters. As a liquid, it is sealed under a small pressure, which is oil.

When the hydraulic press apparatus 30 can be used as a "heating press", since the molds 23 and 24 are heated, heat resistant oil is employ | adopted as a sealing oil.

The spacing chamber 32 is closed and independent of the pressure chambers 15 and 16 formed in the cylinder frame 2.

Therefore, even when used as a "heating press" as described above, the pressure chamber 15 is not only separated from the space chamber 32 but also separated from the lower mold 24 to be heated. The oil does not need to be cooled specifically.

In addition, the space 32 and the pressure chambers 15 and 16 can use different kinds of liquids, and the height h of the equalization chamber is appropriately determined according to the press capability or the thickness of the work table 33. Needless to say, it may be possible to enclose a pressurized oil in a suitable pressure therein.

The movable table main body 34 supports the worktable 33 which is floated through the gap chamber 32, and the movable table main body 34 itself is pressurized. It is fixed to the upper side of the drive means (piston 12 in the example shown).

From the lower surface side of the movable table main body 34 to the worktable 33 side, the bolt 37 is screwed in the state which assembled the dish-shaped carbon member 38, and both are integrated.

Moreover, 39 in the figure shows the boundary where the work table 33 and the movable table main body 34 join by a separating line, and both are firmly connected by the bolt 37 and the dish-shaped tank member 38.

Further, a bolt hole 40 was provided near the piston 12 device portion of the movable table main body 34 to insert the ring 41, and the movable table main body 34 side was provided on the work table 33 side. The bolt 42 was provided over it, and accordingly, the release force when the upper and lower molds 23 and 24 fell, the movable table main body 34-the bolt 42-the work table 33 I'm trying to tell.

Moreover, 43 covers the bolt hole 40 with a plug.

On the upper surface of the work table 33, that is, the working surface 10, the lower mold 24 is precisely aligned with the upper mold 23 on the hydraulic frame 1 side by the washer 44 and the lower mold apparatus bolt 45. It is fixed at a position where the mold fitting can be made, and the working table 33 is provided with an oil sealing hole 46 for pouring oil into the gap chamber 32.

Moreover, although the shape of the worktable 33 is free, there are many quadrangles that fit the lower mold 24.

In addition, a through tube 47 is inserted into the movable table 34 and the work table 33, and a through hole 49 for the extrusion rod 48 is formed therein.

Furthermore, in order to prevent the leakage of oil enclosed in the gap chamber 32, the seal member 35 is provided on the fitting portion 36 which is stepped between the movable table main body 34 and the work table 33 and also the through tube. It is excreted around 47.

Next, the operation table is driven from the pressurizing means in the press work through the upper and lower molds 23 and 24 by driving the movable table 31 upward according to the hydraulic pressure supplied from the hydraulic source which is not illustrated. The reaction force acts on the lower mold 24 at the step of contacting the lower mold 24 via the lower mold 24, and the reaction force is automatically applied to the work table 33 via the oil inside the gap chamber 32. In the vertical direction, the work table 33 is supported by the hydraulic pressure of the complete copper distribution in the space 32.

Moreover, the compressed amount of the liquid enclosed in the gap chamber 32 is almost negligible because the height h of the gap chamber 32 itself is small.

And if the work table 33 is now considered to be part of the lower mold 24 as a floating plate, the lower mold 24 and the work table 33 (floating plate) constitute one elastic body under the equilibrium conditions. Receiving an elastic body directly under full pressure distribution under hydraulic pressure means that it is in the best possible equalization state.

Then, when the movable table main body 34 is bent again, the bowl 37 is fitted with the dish-like tank member 38 so that the occupation table 33 is separated by the dividing line 39 within the allowable amount of the dish-shaped tank member 38. ) Can move independently of the movable table body 34, and the floating plate is deformed so as to keep applying a constant load thereto while following the bending of the mold being pressed and deformed.

This means that even when the oil in the space chamber 32 expands, the dish-like tank member 38 absorbs the amount of variation of the work table 33 due to expansion.

After the press, the release force that can be applied from the pressurizing means to the movable table body 34 to release the lower mold 24 from the upper mold 23 is a worktable via the bolt 42. (33) and to the lower mold (24).

At this time, the movable table main body 34 and the work table 33 are in close contact with each other at the separation line 39.

In addition, when the movable table 31 is lowered, the extrusion rod 48 is suppressed in the lower mold 24 in the through hole 49 to facilitate the lifting of the product from the lower mold 24.

7 is a view showing a second embodiment of the present invention.

In this embodiment, the spacing chamber 55 is formed in the back portion of the hydraulic pressure frame 1 independently of the area according to the width of the working surface 9, and liquid is enclosed therein to float the working surface 9 on the surface. I support it in a state.

For this reason, when the hydraulic frame 1 bends, the liquid in the space chamber 55, for example, oil, is to give the working surface 9 a dynamic parallel as in the first embodiment.

Other configurations and actions are the same as in the above embodiment and thus will be omitted.

In addition, either the equalization chamber 31 on the movable table 31 side and the spacing chamber 55 on the hydraulic frame 1 side may be adopted, and further, both the spacing chambers 32 and 55 are used. It is also free to do.

In addition, although the hydraulic press was demonstrated for example, it is a matter of course that the means of floating engraving of the working surface made into object of this invention is used for other press apparatuses, such as a hydraulic press and a mechanical press.

Furthermore, the third and fourth spheres of the present invention will be described with reference to FIGS. 8 to 11.

These embodiments are intended to improve the press apparatus shown in the first embodiment, not to support one working surface in one chamber, but to support one working surface in several chambers. An object of the present invention is to provide a press apparatus that allows for the correction of efficient warpage and at the same time facilitates the processing of the gap chamber.

In addition, in the following, the same or similar parts as those of the first specific example will be omitted by the same reference numerals and illustration.

8 and 9 show a third embodiment of the present invention.

In the illustrated example, this "pressing device" is shown as a hydraulic press device 30, and the four space chambers 61a, 61b, 61c, (in the movable table 60 of the hydraulic press device 30) ( 61d) are formed independently in the planar direction, and each of the spaces 61, 61b, 61c, and 61d is communicated through the passage 62.

That is, the work table 63 and the movable table main body 64 constituting the movable table 60 are divided in the same manner as in the description of the above proposal, and a "interval space" is formed therebetween. The work table 63 is supported and floated through 61a, 61b, 61c, and 61d.

More specifically, the four recesses 66 are arranged in the planar direction with four recesses 66 in the same shape and the same size in the planar direction of the movable table main body 64, and the recesses in the lower surface 67 of the work table 63 are the aforementioned recesses. The concave portion 68 of the shape and size which can be enclosed in the (66) is protruded corresponding to the four concave portions 66. As shown in FIG. 8, the concave portion 66 and the convex portion 68 are assembled together. The work table 63 in which the spaces 61a, 61b, 61c, and 61d are formed inside the recess 66 is thus left together with a space of height h inside the recess 66. As a result, spaces 61a, 61b, 61c, and 61d corresponding to the height h are formed in the recess 66, and the lower surface 67 of the work table 63 is movable table. The upper surface 65 of the main body 64 is replaced with a gap between the dimensions α.

An o-ring 69 is provided around the convex portion 68 to seal the liquid enclosed in the spaces 61a, 61b, 61c, and 61d.

In addition, the passage 62 communicates with each of the chambers 61a, 61b, 61c, and 61d as shown in FIG. 9, and each of the chambers 61a, 61b, 61c. ), And the liquids enclosed in (61d) can pass through each other, and further, the spaces (61a), (61b), (61c), and (61d) have different passages (71) with respect to the liquid inlet (70). It connects through.

Next, the operation of the press apparatus shown in the third embodiment will be described.

When the movable table 60 is driven by hydraulic pressure supplied from an unillustrated hydraulic pressure source and presses through the upper and lower molds 23 and 24, the pressure applied to the lower mold 24 is lower than the lower mold 24. The reaction force acts on the lower mold 24 at the step of contacting the upper mold 23, and at the same time, the reaction force automatically disengages the encapsulating liquid in the four chambers 61a, 61b, 61c, and 61d. Interacting with the work table 63 in the vertical direction.

This means that the worktable 63 is supported by the hydraulic pressure of the complete equal distribution inside the four spaces 61a, 61b, 61c, 61d. Furthermore, since the height h of the spaces 61a, 61b, 61c, and 61d itself is small, it is almost negligible.

If the work table 63 is now considered to be part of the lower mold 24 as the "floating plate", the lower mold 24 and the work table 63 (floating plate) constitute one elastic body under the equilibrium condition. And thus, one elastic body is directly subjected to full equalization under the hydraulic pressure in each of the four chambers 61a, 61b, 61c, and 61d to obtain the best possible equalization state. That means you can.

The work table 63 follows the bending of the mold to be pressed and deformed, but the following range is maintained within the range of the order α between the upper and lower both sides 65 and 67 while continuing to apply a constant load to the lower mold 24. It's about giving.

Moreover, even when only the work, when the encapsulated liquid leaks in each of the chambers 61a, 61b, 61c, and 61d, the lower surface portion 67 is supported by the upper surface portion 65, and this support state The entire upper and lower both sides 65 to be the working surface 63 of the work table 63 and the movable table body 64 except for the concave portion 68 of the table 63 and the recessed portion 66 of the movable table body 64, As can be obtained as (7), excessive deformation of the work table 63 is supported.

〉ℓ」이 되므로, 가공길이에 한도가 있는 공작기계에 있어서 폭사이즈 L가 아닌 폭사이즈 ℓ만을 가공 할 수있으면 좋으므로 가공하기 용이한 것으로 반대로 말하면 대상으로 하는 공작기계의 최대가공길이를 ℓ라고 하면 배의 2ℓ사이즈를 지닌 큰 사이즈의 작업테이블(63)까지 이 간격실(61a), (61b), (61c), (61d)를 용이하게 가공할 수 있게 된다.By the way, the four space chambers 61a, 61b, 61c, and 61d are similar to the work table 63 corresponding to the size divided into four in the plane size. When the size L is considerably large, the width size l of the space chamber 61a, 61b, 61c, 61d is "

〉 ℓ 」, so it is good to be able to machine only width size ℓ, not width size L, in machine tools with a limited machining length. The spacing chambers 61a, 61b, 61c, and 61d can be easily machined up to the work table 63 of a large size having a double size of 2 times.

Other configurations and functions are the same as those described on the basis of FIGS. 5 to 7 of the first and second embodiments of the first agent, and thus redundant descriptions are omitted.

In addition, only the structure of the movable table 60 is shown in FIG. 8 and FIG. 9, and the others are abbreviate | omitted, and the detailed part of the movable table 60, for example, the bolt 37, the plate-shaped carbon tank material 38, etc. (See also FIG. 6).

10 and 11 show a fourth embodiment.

In the third embodiment with reference to Figs. 8 and 9, the "gap chamber" is shown as four quadrangular chambers 61a, 61b, 61c, and 61d. A plurality of spacing chambers 80 are formed independently between the worktable 82 of the movable table 81 and the movable table body 83, and each of the spacing chambers 80 is provided via a passage 84. It is in communication.

According to this embodiment, the work table 82 can be floated and supported by a very large space chamber 80, and the work table for correcting the bending with a very good efficiency and forming the space chamber 80 can be made. The concave portion 85 of the 82 and the recessed portion 86 of the movable table body 81 can be easily formed in accordance with the processing of the small cylindrical shape and the processing of the small round holes, respectively.

Moreover, especially when processing a small round hole, even a small machine tool can fully process.

Other configurations and operations are substantially the same as those of the first and second embodiments, and the same parts are denoted by the same reference numerals in the drawings, and thus redundant descriptions are omitted.

However, in the third embodiment, four interval chambers 61a, 61b, 61c, and 61d in the fourth shape are formed, and in the fourth embodiment, twenty-five circular chambers 80 in a circular shape are movable tables ( 60) and 81 are shown, but the shape, size, number, etc. of the "interval chamber" are not limited to these, and the yaw is independent of the hydraulic frame and the movable table at least on one side in the plane direction. If one "interval space" is formed and can communicate with the passage, the conditions of the present invention can be satisfied.

As described above, the press according to the present invention can correct the warpage of the mold and the working surface supporting the mold through the gap chamber, and the press capability can be improved by that. It is suitable for use in press equipments with high loads.

Claims (1)

In a press apparatus having a hydraulic frame having an upper mold and a movable table provided with a lower mold, and a wide chamber for sealing liquid according to the plane size of a working surface for a mold apparatus, interposed with a liquid enclosed in this chamber And pressurizing the working surface to support the work surface and at the same time by integrating the hydraulic frame, the movable table and the working surface on which the spacing chamber is installed, by a bolt for installing the dish-shaped tank member.

Images