JPH0730239Y2 - Slide drive device of press machine - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slide driving device for a press machine. In particular, the slide drive device is configured to be able to transmit a rotational force from either the stationary press body or the movable slide to the other.

[0002]

2. Description of the Related Art Conventionally, a general construction of a slide driving device of a press machine (for example, Japanese Utility Model Publication No. 56-30479).
Is shown in FIG. 6 (longitudinal section) and FIG. 7 (horizontal section). In FIG. 6, the crankshaft 2 and the slide 10 are connected via the connecting rod 4 and the plunger 6. The upper end side of the connecting rod 4 is fitted to the eccentric portion 3 of the crankshaft 2, the lower end side of the plunger 6 is connected to the slide 10 side, and both 4 and 10 are the connecting pins 8
Are connected so that they can rotate relative to each other. Reference numeral 1 denotes a crown, which forms a part of the press body (stationary side) that rotatably supports the crankshaft 2.

Reference numeral 15 is a worm wheel mounted in the slide 10, and its screw portion 15S has a plunger 6
Is screwed with the threaded portion 9S of the adjusting screw shaft 9 that is integrally provided at the lower end of the. That is, if the hydraulic pressure in the slide lock hydraulic chamber 11 is removed and the worm wheel 15 is rotated, the vertical relative position between the plunger 6 and the slide 10 can be adjusted. That is, the lower surface position of the slide 10 can be adjusted. This position adjustment amount is determined by the plunger 6 to the adjustment screw shaft 9
It can be confirmed by a die height meter 55 consisting of a finger piece 56 fixed to and a scale 57 provided on the slide 10.

Therefore, when the crankshaft 2 is rotated, the connecting rod 4 swings about the connecting pin 8, so that the plunger 6 (adjustment screw shaft 9), that is, the slide 1 is moved.
0 can be reciprocally driven in the vertical direction.

By the way, as shown in FIG. 7, a so-called slide position adjusting mechanism 20 formed including the worm wheel 15 has a pair of worm shafts 24, 24 meshing with the worm wheels 15 for synchronous rotation mechanism (pulley 2).
5, 25, belt 26, tension rollers 23, 23)
A rotary drive source (drive roller) 2 including a motor and the like.
It is structured to rotate quantitatively by 1, so that the die height can be automatically adjusted. On the other hand, the die height meter also uses the scale reading method (5
From 5), as shown by a two-dot chain line in FIG. 7, for example, the worm shaft 24 is changed to a digital reading counter type die height meter 50 via a speed reducer 51.

[0006]

However, in the above-mentioned conventional structure, since the motor (21) as the rotational drive source and the die height meter 55 are incorporated in the slide 10 itself, the impact of the press work (especially, the blanking work). However, there is a problem that each part such as the motor (21) is broken or damaged due to the breakthrough).

The die height meter 55 is not only a means for quantitatively reading the die height, but also an important means for complying with the power press machine structure standard (Article 31). No damage is allowed.

Therefore, the rotary drive source 21 and the like have a robust structure, and the slide 10 and the connecting rod 4 and the like are large in size, which not only causes the press machine to be large in size and cost but also has a disadvantage in operating economy such as power consumption.

Further, even if the structure is strengthened or the like, the external power source and the motor (21), that is, the movable slide 10 and the stationary side such as the column must be connected by a crossover wiring, so that mechanical vibration is generated. There is a risk of disconnection due to bending due to or relative movement, and disposing of wiring during pressing is troublesome.

Further, the worm wheels 15, 15 and the synchronous rotation mechanism (25, 25, 26, 23, 23, 24, 2)
Since the total weight of the slide position adjusting mechanism 20 including 4) and the like is added to the slide 10, extra energy is consumed during the pressing work.

The applicant of the present application has previously proposed (Japanese Utility Model Publication No. 62-19280) that a motor, which is the rotary drive source 21, is provided in the stationary press body (crown 1). However, since the motor (21) on the crown 1 side and the slide 10 side are mechanically directly connected by a worm gear or the like, the structure is complicated and the impact is large, and it is a perfect measure for a large press machine or a press machine with a large movable stroke of the slide 10. Something hard to say has happened.

The present invention solves the above-mentioned problems of the prior art, and does not impact the rotary drive source, die height meter, etc. during press work, facilitates maintenance and inspection, and downsizes the press machine. The present invention also provides a slide drive device of a press machine that can ensure reliable and smooth operation.

[0013]

SUMMARY OF THE INVENTION The present invention accepts that the above-mentioned conventional problems are caused by the basic structure of a press machine in which a slide moves up and down with respect to a press body. Comparing the above, the die height meter is much more susceptible to shocks, and depending on the type and capacity of the press machine, a hydraulic pump can be adopted as a rotary drive source.
Focusing on the fact analysis that hydraulic pumps can often withstand impacts, etc., even if both or one of the rotary drive source and die height meter are installed on the stationary press body side, only the rotary drive source Even if is disposed on the slide side which is the movable side, the rotational force can be transmitted from one (the other) to the other (the one) while absorbing the vertical movement of the slide, thereby achieving the above object.

That is, according to the present invention, the vertical position of the slide with respect to the crankshaft can be adjusted by relatively rotating the adjustment screw shaft connected to the crankshaft side and the worm wheel mounted on the slide side. In a slide driving device of a press machine, a movable side end of one link member whose fixed side end is rotatably supported on the press body side holding the crankshaft and another link whose fixed side end is rotatably supported on the slide side. A two-node link mechanism formed by connecting the movable side end of the member so as to be rotatable relative to each other, and capable of absorbing vertical movement of the slide, and sliding the rotational force on the press body side incorporated into the two-node link mechanism. And a rotational force transmission mechanism formed so as to be able to transmit the rotational force of the slide side to the press body side.

[0015]

According to the present invention, when the slide moves up and down, the fixed side end of the one link member rotates about the press body supporting point, and the other link member fixed side end rotates about the slide supporting point. To do. Since both movable side ends of both link members are rotatably supported, as a result, the two-joint link mechanism absorbs the vertical movement of the slide and connects the press body and the slide without impact. Here, the rotational force transmission mechanism is incorporated in the two-bar linkage mechanism and can transmit the rotational force from one of the press body side and the slide side to the other.
Therefore, both or one of the rotary drive source and the die height meter can be arranged on the side of the press body which is the stationary side, so that they can be protected from the impact during the press working operation and can exhibit a smooth function.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. (First Embodiment) In the first embodiment, as shown in FIGS. 1 and 2, a two-node link mechanism 30 and a rotational force transmission mechanism 40 are provided, and the stationary main body (crown 1) is provided. Rotation drive source (motor) 21 forming a part of the slide position adjusting mechanism 20
Therefore, the rotational force can be transmitted to the worm shaft (24), the worm wheel (15), and the like that form the other part of the movable slide 10.

First, as shown in FIG. 2, the two-joint link mechanism 30 rotatably supports the fixed end 32 of the one link member 31 on the stationary press body (crown 1) via the shaft 38, and the other link. The fixed side end 35 of the member 34 is rotatably supported on the slide 10, which is the movable side, via a shaft 39, and the movable side ends 33, 36 of both link members 31, 34 are connected by a shaft 37 serving as a connecting shaft so as to be relatively rotatable. It becomes. Therefore, as shown in FIG. 1, if the slide 10 moves up and down,
The vertical movement of the link members 31 and 34 can be absorbed while the angle θ formed by the axes of the link members 31 and 34 changes.

The link members 31 and 34 are screwed with the side ends 32, 33, 35 and 36. This means that the tension adjusting means for adjusting the tension of the belts 42 and 45 to appropriate values will be described later. It is provided as. That is, each link member 31, 34 also serves as a belt tension adjusting rod.

Next, as shown in FIG. 2, the rotational force transmitting mechanism 40 includes a pulley 41 integral with the shaft 38, pulleys 43 and 46 integral with the shaft 37, and a pulley 44 integral with the shaft 39. A belt 42 stretched between the pulleys 41 and 43
And a belt 45 stretched between the pulleys 44 and 46, and are continuously and organically incorporated in the two-node link mechanism 30. Therefore, the rotational force of the shaft 38 can be transmitted to the drive shaft 22. In addition, 28 in FIG. 2 is a coupling. The description of each bearing in FIG. 2 is omitted.

That is, in this embodiment, a rotary drive source (motor) 21 forming a part of the slide position adjusting mechanism 20 is attached to the press body (1) side, and the slide 10 side is connected to the front side as shown in FIG. A synchronous rotation mechanism (pulleys 25, 25, belt 26, tension rollers 23, 23) similar to the conventional example shown in FIG. 7 is provided. Therefore, by controlling the rotation of the motor (2) arranged on the side of the press body (crown 1) which is the stationary side, the two-joint link mechanism 30 absorbs the vertical movement of the slide 10 and moves via the rotational force transmission mechanism 40. It can be transmitted into the side slide 10.

Since the rotary drive source (motor) 21 is provided on the side of the press body (1), the problem that the motor (21) is broken or damaged due to the impact caused by the press work and the crossover wiring is wiped out. , The weight of the slide 10 is not overloaded.

Since the rotary drive source (motor) 21 is disposed on the stationary side (1), the die height meter (50) also moves to the stationary side (1) via the speed reducer (51) on the shaft 38, for example. Mounted. However, in FIGS. 1 and 2, the illustration is omitted because the drawings can be simplified and easily considered.

(Second Embodiment) This second embodiment is shown in FIG. In the figure, the one link member 31 on the press body (1) side is provided with three gears 47, 48, 49 having the same module and the same number of teeth. That is, the first gear 47 is integral with the shaft 38, the third gear 49 is integral with the shaft 37 as a connecting shaft, and the second gear 48 forms an idler gear. Therefore, the gears 47, 48, 49 form a part of the rotational force transmission mechanism 40, and the two-bar linkage mechanism 3
0 absorbs the vertical movement of the slide 10, the three gears have the same number of teeth, so that the slide 10 is moved from the motor (21) side.
The gear mechanism (47, 48, 49) itself does not generate a rotational force to the side.

The construction of the two-bar linkage 30 on the slide side is the same as that of the first embodiment.
And the respective side ends 35 and 36, and the configuration of the rotational force transmission mechanism 40 on the slide 10 side includes pulleys 44 and 46 and a belt 45. That is, it is the same as the case of the first embodiment.

Naturally, the structure of the rotational force transmission mechanism 40 on the slide 10 side is changed to the gear mechanism (4) on the press body (1) side.
7, 48, 49). Therefore, also in the case of the second embodiment, the same operational effect as that of the first embodiment is obtained.

(Third Embodiment) In the third embodiment, as shown in FIG. 4, the two-bar linkage mechanism 3 is used.
0 and the rotational force transmission mechanism 40 are shown in FIGS.
In the same manner as in the first embodiment shown in Fig. 7, the rotary drive source (motor or hydraulic pump) 21 is provided on the slide 10 side in the same manner as shown in Fig. 7, and the digital reading counter type die height meter 50 (speed reducer) is used. Since 51) is particularly delicate and weak against impact, it is arranged on the stationary side (1).

The rotating force transmitting mechanism 40 has a small capacity structure as compared with the case of the first embodiment because it needs only to transmit a small rotating force for driving the die height meter 50.

Therefore, since the die height meter 50 can be arranged on the stationary side of the press body (1), the impact problem associated with the press work can be eliminated and the reliability can be remarkably improved.

The two-bar linkage 30 and the rotational force transmission mechanism 40 have the same structure as that of the second embodiment shown in FIG.
The die height meter 50 may be arranged on the press body (1) side as shown in FIG.

[0030]

As described above, according to the present invention, the two-joint link mechanism for connecting the press body and the slide while absorbing the slide vertical movement, and the two-joint link mechanism incorporated in the two-joint link mechanism, are installed on the press body side and the slide side. Since the rotational force transmitting mechanism for transmitting the rotational force from any one to the other is provided, one or both of the rotary drive source and the die height meter can be arranged on the stationary press machine side. Therefore, the rotary drive source, the die height meter, etc. are not impacted by the press work, and maintenance and inspection are easy, and the press machine can be downsized while ensuring reliable and smooth operation.

[Brief description of drawings]

FIG. 1 is a front view showing a first embodiment of the present invention.

FIG. 2 is likewise a side sectional view.

FIG. 3 is a side sectional view showing a second embodiment.

FIG. 4 is a side sectional view showing a third embodiment.

FIG. 5 is a side sectional view showing a modification of the third embodiment.

FIG. 6 is a vertical cross-sectional view of a conventional slide drive device.

FIG. 7 is likewise a transverse sectional view of a conventional example.

[Explanation of symbols]

 1 crown (press body) 2 crankshaft 4 connecting rod 9 adjusting screw shaft 9S screw part 10 slide 15 worm wheel 15S screw part 20 slide position adjusting mechanism 21 rotary power source 22 drive roller (drive shaft) 24 worm screw shaft 30 two-section link Mechanism 31 One side link member 32 Fixed side end 33 Movable side end 37 Connecting shaft 34 Other side link member 35 Fixed side end 36 Movable measuring end 40 Rotational force transmission mechanism 41 Pulley 42 Belt 43 Pulley 44 Pulley 45 Belt 46 Pulley 47, 48, 49 Gear 50 Die Height Meter

Claims (1)

[Scope of utility model registration request] 1. An adjusting screw shaft (9) connected to the crankshaft (2) side and a worm wheel (15) mounted to the slide (10) side are relatively rotated to move the adjusting screw shaft (9) relative to the crankshaft (2). In a slide driving device of a press machine configured such that the vertical position of a slide (10) can be adjusted, a fixed side end (32) is rotatably supported on a side of a press body (1) holding the crankshaft (2). The movable side end (33) of the one link member (31) and the movable side end (36) of the other link member (34) in which the fixed side end (35) is rotatably supported on the slide (10) side are relatively rotated. A two-joint link mechanism (30) that is operably connected and is configured to absorb the vertical movement of the slide (10), and a press body (1) incorporated in the two-joint link mechanism (30).
And a rotational force transmission mechanism (40) formed to transmit the rotational force of the slide side to the slide (10) side or transmit the rotational force of the slide (10) side to the press body (1) side. The slide drive device of the press machine that features.