JPH0123619Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a press dictation device that is installed directly on the floor.

Conventionally, a dictation device used in a floor mount press, which is installed with the bottom surface of the bed directly in contact with the floor, has a bellows that is extendable and retractable on the board and is guided by a guide rod provided on the outer periphery of the board. An air tank is installed on the board, a wear plate that receives the cushion pin used in the mold is fixed on the top plate of the air tank, and the board is attached to a bolt installed on the bottom of the press bolster at a constant height via a collar. was. The bellows and the air tank communicate with each other through a passage and supply air at a constant pressure to generate a substantially constant upward biasing force, that is, a dictation force. Even if you try to remove this dictation device upwards along with the bolster, the slide of the press located above gets in the way and you cannot remove it from the bed. Also, you cannot remove the nuts from the bolts, so it is unavoidable that the A pit was provided for installation and removal. The bed of these presses is surrounded on all sides by a wall-like frame and cannot be removed from the sides. Also, if you want to install the mounting part between the board and the studs above, you will have to install a support above the board and attach that support to the stud, but this takes up a lot of space inside the bed. Since there is also a guide rod for the bellows, the diameter of the bellows must be made smaller by the bolt and support, and the dicing force must be reduced, which has the disadvantage of reducing the dictating force and complicating the structure.

The purpose of the present invention is to eliminate these drawbacks, to reduce the distance between the board and the bolster by providing a bellows on the top surface of the board and an air tank on the bottom surface, to maintain a large ducting force, and to enable installation and removal from above the bed. An object of the present invention is to provide a press dictation device that eliminates the need for. Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, a bolster 2 is fixed to the upper surface of a bed 1 of the brace with bolts 3. A dictation device 4 fixed to the lower surface of the bolster 2 is provided inside the bed 1. A horizontal base plate 5 is provided in the vertical center of the dictation device 4, and a bellows 6, which can be expanded and contracted in the vertical direction, is airtightly fixed to the upper surface of the base plate 5. A guide rod 8 is fixed downwardly at the center of the ceiling plate 7 of the bellows 6, and the lower end of the guide rod 8 is slidably guided through the base plate 5. An air tank 9 is airtightly fixed to the lower surface of the substrate 5 concentrically with the bellows 6. Air tank 9 for guide rod 8
An air passage 10 communicating with the upper part of the empty chamber of the bellows 6 is provided. The air tank 9 is provided with a constant pressure air supply port 11, and is connected to a required air circuit (not shown). A wear plate 12 is fixed to the upper surface of the ceiling plate 7 of the bellows 6 to receive a cushion pin (not shown) of a mold fixed to the upper surface of the bolster 2. The dictation device 4 having such a structure is fixed with a nut via a collar 14 to stud bolts 13 provided upright on the lower surface of the bolster 2 through holes in the four corners of the substrate 5, and is connected to the upper surface of the wear plate 12 and the lower surface of the bolster 2. are installed at regular intervals.

Next, we will discuss the effect. In FIGS. 1, 2, and 3, when the press performs pressing, air at a constant pressure is supplied from the supply port 11, and the air is supplied to the bellows 6 through the air tank 9 and the passage 10.
filled with The bellows 6 extends to its upper limit and the wear plate 12 applies an upward biasing force to a cushion pin (not shown) of the mold. When press working is performed, the bellows 6 expands and contracts as the cushion pin moves up and down, but the empty capacity of the bellows 6 is not compensated for by the capacity of the air tank 9. By reducing the internal pressure fluctuation, the fluctuation of the biasing force is reduced.

When removing the dictation device 4, the slide 15 of the press is raised to the upper limit and then stopped. Remove bolt 3 that tightens bolster 2. The bolster 2 with the dictation device 4 still suspended is lifted by a forklift or a crane. At this time, since the base plate 5 is located at the center in the vertical direction of the dictation device 4, the bolster 2 is in a position protruding from the bed 1 even if it is below the slide 15, as shown in FIG. The nut of the stud bolt 13 is removed and the dictation device 4 is temporarily suspended in the bed 1 as shown in FIG. Subsequently, after carrying out the bolster 2, the dictation device 4 is taken out from inside the bed 1 and carried out. When assembling, proceed in the reverse order of the above. The piping connected to the supply port 11 can be removed and installed from a small gap in the frame at the rear of the bed 1.

As is clear from the above description, according to the present invention, since the substrate is provided in the center and the bellows are provided on the upper surface, the structure is simple, the size of the bellows is not reduced, and the bellows is provided on the upper side of the bed. Since it can be taken out, there is no need to provide a pit in the lower part of the inside of the bed as in the past, and it has great practical effects and advantages, such as easy installation and removal and easy installation work.

[Brief explanation of the drawing]

FIG. 1 is a partially sectional front view of the main part of a press equipped with an embodiment, and FIGS. 2 and 3 are front views of the main part of the press for explaining the operation. 1 is a bed, 2 is a bolster, 3 is a bolt, 4 is a dictation device, 5 is a board, 6 is a bellows,
7 is a ceiling plate, 8 is a guide rod, 9 is an air tank, 10 is a passage, 11 is a supply port, 12 is a wear plate, 13 is a stud bolt, 14 is a collar, 15
is a slide.

Claims (1)

[Claims for Utility Model Registration] In a dictation device installed in a four-sided bed of a press that is installed directly on the floor, a bellows 6 is fixed to its upper surface, an air tank 9 is fixed to its lower surface, and A bolt 13 is embedded in the lower surface of the bolster 2 which is removably installed on the upper surface of the bed, and fixes the board 5 at an intermediate position in the vertical direction of the bed with a collar and a nut.
A dictation device for a press, comprising: and.