JPS5932478Y2 - Forging press slide adjustment device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a slide adjustment device for a forging press in which a slide is suspended from an eccentric shaft via a connecting rod.

Adjusting the slide in this type of forging press, which has eccentric shafts in the left-right direction of the press, is difficult due to space constraints, so the slide is not equipped with an adjustment mechanism, and generally the lower surface of the bolster is sloped and wedges are used. A method of adjustment is adopted.

According to this method, the position of the lower die changes each time the adjustment is made, so especially in the case of automatic feeding, the relative dimensions with the feeder claw change and this needs to be adjusted, and the sliding surface is on the bottom. As a result, there were drawbacks such as scale build-up and adverse effects on maintenance.

This invention was made to deal with the above-mentioned conventional problems.The feature is that an adjustment mechanism is built into the slide of the forging press, making it possible to easily adjust the slide manually or automatically. The key point is that it is possible to easily eliminate the stick phenomenon where the press stops due to overload near the point.

The following will be explained with reference to the embodiment shown in the drawings. Reference numeral 1 denotes a connecting rod that is rotatably fitted to a bento pongee 2, and a connecting rod that is rotatably supported on a bifurcated tip or via a stop pin 3. A slide 4 is movably supported.

The longitudinal shaft portions A and C of the wrist pin 3 are offset by a zero dimension with respect to the shaft portion B pivotally supported at the tip of the connecting rod 1, as shown in FIGS. 2 and 3.

5 is an adjustment screw, one end of which is inserted through the pole head 6,
It is movably supported in a cylinder 7 provided on the slide 4, and the other end is connected via a universal joint 9.10 to a motor 11 supported on the slide 4.

Reference numerals 12 and 13 denote nuts for preventing rotation of nuts screwed into the adjusting screw 5, and a cylinder 15 is installed between them.

The nut 12 is rotatably fitted to the tip of a lever 14 fitted to the shaft portion A of the wrist pin 3 via an ear shaft 12' projecting laterally.

At the time of pressurization, a moment is generated by the force acting on the connecting rod 1 and the thread 1140 due to the eccentricity e, and a rotational force is generated on the lever 14 in the right direction in FIG. 3, but the rotational force acting on the lever 14 is This is prevented by supplying pressure oil to the cylinder I and applying a pressing force to the piston 8 of the cylinder 7.

Further, after the slide adjustment, pressure oil is supplied to the cylinder 15 to apply a suppressing action to the piston, thereby preventing rotation between the nut 12 and the adjusting screw 5.

This device has the above-mentioned configuration, and in order to operate the adjustment mechanism and adjust the slide in the illustrated state, the connecting rod 1 must be stopped at a fixed position, and the connecting rod 1 must be stopped manually or by the motor 1.
1 rotates the adjusting screw 5 in the normal or reverse direction, and the nut 12 is moved to the right or left in FIG. 3 by this rotation.

Therefore, the lever 14 fitted with the nut 12 rotates around the center o1 of the tip hole of the connecting rod 1, and the rotation angle α is set by rotating the stop pin by the same angle around the ttol, and the fitting center of the slide 4 is rotated. Slide adjustment is performed by moving 02 downward or upward.

In addition, when the press stick phenomenon occurs, if the pressure oil in the cylinder 1 is released to free the adjustment screw 5, the lever 14 is subjected to a rotational force in the right direction in FIG. Lever 14 rotates and slide 4
moves up slightly.

Therefore, the overload applied to the press can be released and the stick phenomenon can be canceled.

Therefore, according to this invention, it is now possible to easily adjust the slide of a forging press, which was previously considered difficult, by manual or automatic operation, and it is also possible to easily eliminate the stick phenomenon that occurs in the press. However, since the adjustment mechanism is located in a position where it is not affected by the scale, it is extremely effective in preventing dust and saving labor in maintenance.

[Brief explanation of drawings]

Figure 1 is a side cross-sectional view, Figure 2 is a cross-sectional view taken along the line ■ to ■ in Figure 1, Figure 3 is a cross-sectional view taken along the line ■ to ■ in Figure 1, and Figure 4
The figure is a detailed view of the threaded portion in FIG. 3. 1...Conrod, 2...Eccentric shaft, 3
...Wrist pin, 4...Slide, 5
...Adjustment screw, 9゜10...Universal joint, 11...Motor, 12...
... Nut, 13 ... Rotating nut, 14
······lever.

Claims (1)

[Scope of utility model registration request] In a forging press equipped with an eccentric shaft that is rotationally driven, a connecting rod fitted on the eccentric shaft, and a slide suspended from the tip, the connecting rod tip is formed into a bifurcated shape and the wrist pin is eccentrically attached to the iron part. A slide is suspended from both ends of the wrist pin, and a lever for rotating the wrist pin is provided in the center, and a nut screwed into the adjustment screw is rotatably fitted to the lever. , the slide can be adjusted up and down as desired by rotating the adjustment screw in the forward or reverse direction, and one end of the adjustment screw is movably supported in a cylinder provided on the slide, and by releasing the cylinder pressure. A slide adjustment device for a forging press, characterized in that the slide is configured to move upward.