JP3588753B2 - Support base for taking the press mold in and out of the press - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a support base for taking a press die into and out of a press.
[0002]
[Prior art]
The press cannot be transported directly to the installation position by the crane when the mold is installed in the material processing section because the drive section is located above the material processing section. Therefore, they are carried on the table of a hand lift or a forklift and carried to the side of the material processing section of the press, from where they are manually pushed into the material processing section.
[0003]
However, this pressing operation is not easy for a heavy mold. The same applies to the removal operation when removing the mold. If the table surface is slippery, it is easy to push and remove the mold, but when transferring from a crane to a hand lift or forklift, or danger of falling off the table due to unexpected slippage during transport by lift There is.
[0004]
[Problems to be solved by the invention]
The present invention provides a support table that can be used as a table of a hand lift or a forklift or mounted on a table when a mold placed on the table is slippery or hard. The purpose is to be able to switch.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the support according to the present invention is arranged such that a metal ball is housed in a liquid-tight state between the metal ball and an inner wall, and the entire shape is along the upper hemisphere of the ball above a cylindrical coupling. An annular throttle portion and a circular hole surrounded by the throttle portion and having a size such that a part of the sphere can protrude are formed, and a large number of the couplings are attached to the respective edges of the multiple openings of the upper plate at the throttle portion. Further, the lower end of each of the couplings is liquid-tightly fixed to a bottom plate having a pressure oil passage therein, and the lower plate of the sphere in each coupling is communicated with the pressure oil passage and the upper plate together with a communication hole. The distance between each upper surface of the bottom plate was formed longer than the diameter of the sphere.
[0006]
[Action]
When the hydraulic pressure is not applied to the lower chamber of the ball, the ball is completely immersed in the opening of the upper plate, and the mold placed on the support is the upper plate. , The slip prevention force corresponding to the friction coefficient between the mold and the upper plate is generated. When hydraulic pressure is applied to the lower chamber of the ball, the ball rises and a part of the ball protrudes from the opening of the upper plate, and the mold placed on the support stand is lifted by hydraulic pressure and rotates away from the bottom plate to rotate. Since the ball is supported by the ball which has become easy, the lateral movement of the mold becomes easy.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
Embodiments of the present invention will be described based on examples with reference to the drawings.
FIG. 1 shows a support base 13 of the present invention. In the left half, a part of the ball 1 projects upward from the upper surface of the upper plate 5 due to an increase in hydraulic pressure. Shows a state where the ball 1 is retracted below the upper surface of the upper plate 5 due to the lowering of the ball. Since the lower chamber 11 of the ball 1 of each coupling 2 communicates with the common pressure oil flow passage 9 through each communication hole 12, the two states of the ball 1 on the same support table 13 as shown in FIG. It doesn't really happen at the same time. For convenience of explanation, the balls 1 in different states are shown on the same support.
[0008]
The coupling 2 is substantially cylindrical, and houses the ball 1 in this cylindrical shape. The sphere 1 is made of metal having sufficient strength so as to support the weight of the pressing die. In the upper part of the coupling 2, there are formed a constricted portion 3 along the upper hemisphere of the sphere 1 and a circular hole 4 large enough to allow a part of the sphere 1 to protrude. The throttle portion 3 is annular in plan view as viewed from above, and the circular hole 4 is surrounded by the annular throttle portion 3. The ball 1 can slide in the vertical direction while maintaining a liquid-tight state that does not leak pressure oil between the ball 1 and the cylindrical inner wall of the coupling 2, and can rotate even when it is at the ascending position in close contact with the throttle portion 3. It is. The aperture 3 of the coupling 2 is fixed to the edge 7 of the opening 6 of the upper plate 5. In that case, the tip of the narrowed portion should not be raised above the upper surface of the upper plate. The height may be the same, but if the height is slightly lower than the upper surface of the upper plate, there is no possibility that the weight of the press die is directly applied to the coupling 2.
[0009]
The lower end of the coupling 2 is fixed to the bottom plate 10. In that case, it is liquid-tightly fixed so that pressure oil does not leak from the fixing part. A pressure oil flow passage 9 is provided in the bottom plate 10, and the pressure oil flow passage 9 communicates with a lower chamber 11 of the ball 1 in the coupling 2 through a communication hole 12. Pressure oil is supplied to the pressure oil flow passage 9 from a pump (not shown), and is controlled to return to the pump. In order to provide a pressure oil flow path in the bottom plate 10, a communication hole 12 is provided at a predetermined position of one of the two semi-circular grooves formed with a semi-circular groove corresponding to the arrangement of the pressure oil flow path 9, For example, the two plates may be overlapped and integrated so that the semicircular grooves of the two plates coincide with each other.
[0010]
The upper plate 5 and the bottom plate 10 can be connected via the coupling 2 as described above, or can be connected by the side frame 14 or the spacing holder 15 as shown in FIG. . FIG. 2 shows the support base of the present invention, but the illustration of the side frame and the spacing holder is omitted. The distance between the upper plate 5 and the bottom plate 10 is such that the distance between the upper surfaces of the upper plate and the bottom plate is longer than the diameter of the sphere, preferably several mm longer than the diameter of the sphere. If the distance is more than a few mm longer than the diameter of the sphere, when the oil pressure drops, the top of the sphere will be retracted to more than a few mm below the upper surface level of the upper plate, ensuring that the sphere will not receive the load of the mold. . The support 13 as described above is used as a table of a cargo handling device 16 such as a hand lift or a forklift, or mounted on the table and used as shown in FIG. The height of the support 13 installed on the loading / unloading device 16 is adjusted to the insertion position of the die 18 on the press 17, and the hydraulic pressure is applied to the lower chamber of each ball 1 via the pressure oil flow path 9 of the support. If added, the sphere 1 rises and the top of the sphere projects to a height regulated by the circular hole 4 of the coupling 2 (usually 5 to 10 mm above the circular hole 4), and the mold is lifted from the upper surface of the upper plate to allow the ball to rise. Only support. The sphere can be easily rotated in this state, and the mold 18 can be easily transferred from the support base 13 to the press 17 manually.
[0011]
【The invention's effect】
Since the present invention is configured as described above, the sliding friction and the sliding friction, which greatly differ in resistance to the movement of the mold on the support base, can be switched as required by a simple operation of controlling the hydraulic pressure of the lower chamber of the ball. The choice makes it possible to guarantee the ease and safety of the work when the die is installed with a hand lift or a forklift on the material processing section of the press where a crane cannot be used. Further, in the present invention, since the ball is moved up and down by hydraulic pressure, lubrication for keeping the rotation resistance of the ball small is automatically performed and the maintenance work is simplified.
[Brief description of the drawings]
FIG. 1 is a front sectional view showing a main part of a support base of the present invention.
FIG. 2 is a perspective view of a support base of the present invention.
FIG. 3 is a side view showing an example of use of the support base of the present invention.
[Explanation of symbols]
REFERENCE SIGNS LIST 1 ball 2 coupling 3 throttle 4 circular hole 5 upper plate 6 opening 7 edge 8 lower end 9 pressure oil flow path 10 bottom plate 11 lower chamber 12 communication hole 13 support base 14 side frame 15 interval holder

Claims (1)

The overall shape is substantially cylindrical, and a metal ball (1) having sufficient strength is placed in the cylindrical shape to slide and rotate in a vertical direction while maintaining a liquid-tight state with the cylindrical inner wall. On the upper part of the coupling (2) housed in a possible state, an annular diaphragm (3) along the upper hemisphere of the sphere (1) and the sphere (1) surrounded by the diaphragm (3) A circular hole (4) large enough to protrude is formed, and the aperture (3) of the coupling (2) is fixed to the edge (7) of the opening (6) of the upper plate (5). As a result, a number of couplings (2) are attached to the upper plate (5), and the lower end (8) of the number of couplings (2) has a bottom plate (10) having a pressure oil flow path (9) inside. The pressure oil flow path (9) and the lower chamber (11) of the ball (1) in each coupling (2) are communicated by a communication hole (12). And a distance between respective upper surfaces of the upper plate (5) and the bottom plate (10) is formed to be longer than a diameter of the sphere (1). Table

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