JPS5912397B2 - Kosoku Press - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a high-speed press having a dynamic balance mechanism for a reciprocating portion of a slide, a release mechanism drive portion for a roll feed for material feeding, and a scrap cutter mechanism during high-speed operation.

Recently, as the speed of presses has increased, a high-speed press with a dynamic balance mechanism has been required and researched.In response to this demand, the present invention completely eliminates alignment errors in the dynamic balance mechanism and has a dynamic balance mechanism. The purpose of the present invention is to provide a compact high-speed press that uses a scrap cutter and a roll feed release mechanism in combination. 5 To explain the drawings of an embodiment of the present invention, FIG. 1 is a front view showing the entire high-speed press of an embodiment of the present invention, including a frame 1, a slide 2, a crankshaft 3, and a left auxiliary slide 4. , a right side auxiliary slide 5, a brake 6, a flywheel 7, a clutch 10, a roll feed 9, a scrap cutter 10, and an electric motor 11.

12 is the material to be fed, which is fed in the direction of the arrow.

FIG. 2 is a right side view of the present high-speed press, showing the right side auxiliary slide 5, the hole 155a through which scrap passes, the scrap cutter 10, and the shearing blades 10a, 10b.

FIG. 3 is a left side view of this high-speed press, showing the left side auxiliary slide 4, the hole 4a through which the material is fed, and the release cam 1220 of the roll feed 9 above it.

The slide 2 and the two auxiliary slides 4 and 5 shown by broken lines in FIG. 1 show the features of this machine, and will be described in detail.

In FIG. 4, the crankshaft 3 has bearings 18, 2519
It is supported and driven by.

The end of the crankshaft is equipped with a brake 6, a flywheel □, and a clutch 8. It constitutes the transmission mechanism of the press. A pulley 21 that drives the feed is attached to one end of the crankshaft.
is installed. The crankshaft 3 has el, 30e
2, there are four eccentric parts, that is, crank pin parts, and el
, e2 have a phase difference of 1800. Eccentricity el
defines the movement of slide 2, and the stroke length of the slide is 2×el. The eccentricity e2 is 35 which defines the movement of the auxiliary slide, and the stroke length of the auxiliary slide is 2Xe2. In FIG. 6, the slide 2 is guided by the frame 1 in the front-back and left-right directions, and can only move up and down.

Similarly, the left and right auxiliary slides 4 and 5 are guided by the frame 1 and the guide 20 and can only move in the vertical direction. Reference numerals 13 and 16 in FIG. 4 indicate cross sliders as shown in FIGS. 3 and 5, which are guided by contact plates 15 and 17 in the vertical direction and can move freely in the horizontal direction.

That is, the crank pin portions at the eccentricities El and e2 of the crankshaft 3 and the cross sliders 13 and 16 constitute a cross slider crank mechanism. Now, when the crankshaft 3 rotates, the slide 2 performs vertical reciprocating motion with a stroke length defined by the eccentricity e1, and similarly, the auxiliary slides 4 and 5 move up and down with a stroke length defined by the eccentricity E2. Performs directional reciprocating motion.

Since the eccentricities El and e2 have a phase difference of 180 degrees, the slide 2 and the auxiliary slides 4 and 5 reciprocate with a phase difference of 180 degrees, that is, they move in opposition to each other.

Figure 7 shows slide 2 and auxiliary slide 4 of this high-speed press.
, 5 shows the stroke displacement characteristics, where the horizontal axis shows the crank rotation angle and the vertical axis shows the stroke displacement.

As shown in FIG. 7, their displacement characteristics take a perfect sinusoidal curve. Since the characteristics of the slide 2 and the auxiliary slides 4 and 5 are sinusoidal curves, the acceleration generated by their respective movements also becomes a perfect sine curve.

The excitation force in the vertical direction due to the vertical reciprocating motion is determined by the acceleration and the mass of the moving body. That is, the excitation force of the slide 2 is determined by the mass of the slide 2 and the acceleration of the slide 2,
The excitation force of the auxiliary slides 4 and 5 is determined by the mass of the auxiliary slides 4 and 5 and the acceleration of the auxiliary slides 4 and 5. Since the slide 2 and the auxiliary slides 4 and 5 move in opposition to each other as described above, the directions of the excitation forces also oppose and cancel each other out.

The feature of this high-speed press is that by canceling the excitation force of the slide with the auxiliary slide, no excitation force is generated by the movement of the slide on the base floor surface on which the press is installed.

The relationship for canceling the excitation force in Fig. 4 is as follows: e1 x mass of slide = E2 x mass of auxiliary slide, and should be set to satisfy the above equation.

As shown in FIG. 4, the auxiliary slides 4 and 5 are located on both the left and right sides of the slide 2, and have a flat plate shape and are compact due to the structure of the press. This structure is also arranged to prevent the generation of moments within the frame. The second feature of this high-speed press is that the right side auxiliary slide 5 is equipped with a scrap cutter, and the scrap is cut by the stroke movement of the auxiliary slide 5. It constitutes a release device for the roll feed 9, and the roll release is operated by the movement of the left auxiliary slide 4.

4, 10a and 10b show the shearing blade of the scrap cutter, and 12 of the left auxiliary slide 4 shows the release cam.

The release cam 12 moves up and down together with the auxiliary slide 4 to support the roll of the roll feed 9. The lever 23 is actuated every stroke by the release cam 12, and the roll release is performed only for a certain period of the crank rotation angle. The material 12 is fed in the direction of the arrow and reaches the scrap cutter 10. FIG. 7 shows the timing for feeding the material of the roll feed and the timing for operating the roll release.

According to the present invention, a cross slider crank mechanism is adopted to drive the slide and the auxiliary slide, so that the excitation force generated by the reciprocating movement of the slide of the high-speed press can be completely canceled by the auxiliary slide that moves against it. This has the advantage of significantly increasing the vibration isolation effect of high-speed presses, and also allowing the roll release mechanism of the scrap cutter and roll feed to be configured easily and compactly by using an auxiliary slide to cancel the excitation force. .

[Brief explanation of the drawing]

Fig. 1 is a front view of the high-speed press of the present invention, Fig. 2 is a right side view of the present high-speed press, and Fig. 3 is a left side view of the present high-speed press (
However, the roll feed 9 and the frame side cover 1a are removed), FIG. 4 is a cross-sectional view of the press vertically at the center of the crankshaft 3, and FIG. 5 shows the sliding portion. FIG. 4 is a cross-sectional view taken along line AA in FIG. 4, FIG. 6 is a cross-sectional view taken along line B-B in FIG. 4, and FIG. 7 is a timing chart showing the movement of the slide and balance weight. 1 is the frame, 2 is the slide, 3
is the crankshaft, 4 is the left side auxiliary slide, 5 is the right side auxiliary slide, 6 is the brake, 7 is the flywheel, 8 is the clutch, 9 is the roll feed, 10 is the scrap cutter, 11 is the electric motor, 12 is the release cam, 13 is the cross Slider, 14 is slide cap, 15 is plate, 1
6 is a Cruz slider, 17 is a contact plate, 18 is a bearing, 19
2 is a bearing, 20 is a guide plate, 21 is a pulley, and 22 is a material.

Claims (1)

[Claims] 1 Shearing blades are attached to one side of the slide of the press and opposite to the left and right sides, and the shearing blades fixed to the frame constitute a scrap cutter, and the other side is equipped with a roll feed release mechanism drive such as a cam etc. The two auxiliary slides, which are made up of two flat plates with material passage holes, are made to be able to reciprocate in the vertical direction using a frame and guide plate, and are connected to one crankshaft via a Cruz slider type crank mechanism. The slide and the auxiliary slide are characterized by having a configuration in which the respective eccentric directions of the slide and the auxiliary slide have a phase difference of 180°, and the slide and the auxiliary slide are connected in a state where the relationship between mass and eccentricity is matched. High speed press.