JPH10277784A - Machine press - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drive unit easy in assembly/disassembly, and to simplify the frame structure by positioning a first bearing device and a second bearing device on an upper part of a frame, and tightening them by a tightening means. SOLUTION: A first bearing device 12 to rotatably support a crank shaft is provided on one end part, and a second bearing device 22 is provided on the other end part. A boss support part 25 is fixed to the second bearing device 22, and a flywheel 27 provided with a clutch brake is rotatably supported. At least one connecting rod 5 is rotatably fitted to an eccentric part of the crank shaft, and the connecting rod 5 is split into a large ring part to be lifted to the eccentric part of the crank shaft and a female screw part in which a male screw part for regulating the die height of a slide is screwed. The crank shaft is positioned by a positioning means provided at least either of the first bearing device 12 or the second bearing device 22, and a drive unit easy in assembly/disassembly is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drive unit for a mechanical press and a frame for the mechanical press provided with the drive unit.

[0002]

2. Description of the Related Art In a conventional mechanical press, an open portion having a half bearing portion is provided below a crown, a crankshaft is incorporated from a lower open portion, and the crankshaft is supported from below. The bearing is mounted, and the bearing and the bearing part on the crown side are fixed by bolts. In addition, an open portion having a half bearing portion is provided above the crown, the crankshaft is incorporated from above, a half bearing that supports the crankshaft from above is mounted, and this bearing and the bearing portion on the crown side are attached. It is fixed with bolts. In addition, there are some that incorporate a crankshaft from the side of the crown. In any of the above-mentioned prior arts, it is necessary to assemble the crankshaft directly to the crown, and after assembling the crankshaft to the crown, the flywheel and the clutch / brake are assembled.

[0003]

As described above, in the mechanical press according to the prior art, the crankshaft must be directly mounted on a large crown, and in any case, after the crankshaft is mounted on the crown, the flywheel is driven. Since the clutch and brake are assembled, the drive parts must be assembled after the frame has been assembled, and the construction period cannot be shortened. Also,
A cover plate must be provided on the lower surface or upper surface of the crown to prevent and collect the lubricating oil supplied to the bearings, etc., and the number of parts and the number of man-hours for manufacturing and processing parts will increase, and oil leakage shall be considered. I had to. In addition, if the crankshaft is incorporated from the side of the crown, a large hole that is larger than the outer diameter of the largest part of the crankshaft must be provided, and due to the strength of the frame, it is restricted by the frame structure. This requires a large installation space between adjacent machine presses.

[0004] An object of the present invention is to solve the above-mentioned problems, and integrally form a bearing device of a crankshaft for rotatably fitting a connecting rod to an eccentric portion and a flywheel having a clutch / brake therein. An object of the present invention is to provide a drive unit and a frame structure that can be easily assembled and disassembled.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to a mechanical press for vertically moving a slide via a connecting rod rotatably connected to an eccentric portion of a crankshaft. A first bearing device rotatably supported is provided at one end, and a second bearing device is provided at the other end. A boss support is fixed to the second bearing device and rotatably supports a flywheel provided with a clutch and a brake. At least one connecting rod is rotatably fitted to the eccentric portion of the crankshaft, and the connecting rod is screwed with a large ring portion fitted to the eccentric portion of the crankshaft and a male screw portion for adjusting the die height of the slide. And a female screw portion. A crankshaft is positioned by positioning means provided on at least one of the first bearing device and the second bearing device, and a drive unit that is easy to assemble and disassemble is provided. A drive unit is provided which is configured by positioning the first bearing device and the second bearing device on the upper portion of the frame and fastening them by fastening means, and connecting the large ring portion of the connecting rod and the female screw portion provided on the slide side.

[0006] Further, a frame of a mechanical press is composed of a bed plate on which a bolster is fixed by fastening means below, and a left side plate and a right side plate which have a drive unit assembling portion above and a slide guide portion on the inner surface. The bed plate and the oil receiving plate provided above are erected and integrally formed.

[0007]

FIG. 1 is an overall view of a mechanical press according to an embodiment of the present invention. FIG. 2 shows a top view thereof. 3 is a left side view of the drive unit, and FIG. 4 is a right side view of the drive unit. As shown in FIGS. 1 to 4, the mechanical press 1 includes a frame 2 erected on a vibration isolator 30, a bolster 3 fixed on a bed plate 2 </ b> A of the frame 2, and a drive unit 10.
And the drive unit 10 and the connecting rods 5, 5
And the slide 4 which is connected by.

The frame 2 is provided with a bed plate 2A
Then, the left side plate 2C and the right side plate 2D are erected and integrally formed with the oil receiving plate 2B sandwiched therebetween. A drive unit mounting portion 2E is provided on the upper portion of the frame 2, and slide guides 9, 9 for guiding the vertical movement of the slide 4 are fixedly provided on the inner surfaces of the left side plate 2C and the right side plate 2D. Mounting portions 2F, 2F for the guide are provided.

The drive unit 10 includes an eccentric shaft 11 having an eccentric portion 11A, a first bearing device 12 for rotatably supporting one end of the eccentric shaft 11, and a second bearing for rotatably supporting the other end. Device 22 and a flywheel 27 rotatably supported by a boss support 25 provided with a clutch / brake 28 and fixed to the second bearing device 22.
And

The first bearing device 12 includes a first block 1
3, a sliding bearing 14 that fits into the hole 13A of the first block 13 and rotatably supports the eccentric shaft 11;
Flange 15 fixed to hole 13B of first block 13
And a rolling bearing 16 rotatably supporting the eccentric shaft 11 by fitting to the eccentric shaft 11. The eccentric shaft 11 is
The axial position is determined by the rolling bearing 16 positioned at 5. The second bearing device 22 has a second block 23 and a hole 23A of the second block 23.
And a flywheel 27 provided on a shaft of a boss support 25 fixedly mounted in a hole 23A of the second block 23.
And a rolling bearing 26 that rotatably supports the fitting.

The connecting rods 5, 5 are rotatably fitted to the eccentric portions 11A, 11A of the eccentric shaft 11, and the connecting rod 5 is connected to the eccentric portions 11A of the eccentric shaft 11.
And a female thread 6A of a nut 6 into which a male thread 7A of a ball screw 7 for adjusting the die height of the slide 4 is screwed. The drive unit 10 and the slide 4 are separated by a large ring portion 5A of the connecting rod 5 and a nut 6 to which a ball screw 7 is screwed.

In assembling the mechanical press 1, when the frame 2 is erected on the floor of a factory, first, the bolster 3 is fixed on the bed plate 2A. Next, from above the frame 2, the drive unit 10 is installed on the drive unit mounting portion 2E on the upper portion of the frame 2, and the step 13C of the first block 13 and the step 23C of the second block 23 of the drive unit 10 are respectively Left side plate 2
C is fitted to the fitting portion between the right side plate 2D and the frame is positioned in the front-rear direction of the frame. Further, a flange 1 sandwiched between the left side plate 2C and the right side plate 2D.
Flange 15A of 5 and brim 25A of boss support 25A
Thus, the positioning in the left-right direction is performed. Thus, when the drive unit 10 is installed in the drive unit attachment portion 2E, the first block 13 and the second block 23
8 and 18 are fixed.

When the drive unit 10 is mounted on the upper portion of the frame 2, the slide 4 previously placed on the bolster 3 via a jack (not shown) is gradually raised by the jack and provided on the slide 4 side. Nut 6
The slide 4 and the drive unit 10 are connected by fastening the bolts 8 to the large ring portion 5A of the connecting rod 5 on the drive unit 10 side. Further, two counter balancers 29, 29 for balancing the slide weight including a mold (not shown) are provided at the upper center of the frame so as to sandwich the eccentric shaft 11.
Of the rod 29A is connected to the slide 4 and fixed.

The slide 4 connected to the drive unit 10
Is adjusted by the slide guides 9, 9 attached to the guide attachment portions 2F, 2F of the left side plate 2C and the right side plate 2D of the frame 2 so that the vertical movement of the slide 4 is smoothly guided. Thus, the mechanical press 1 that has been assembled is installed on the vibration isolator 30 placed on the floor of the factory.

Although not shown, a main motor serving as a driving source is provided at the rear of the right side plate 2D of the frame 2, and transmits the power of the main motor to the flywheel 27 via a pulley and a belt attached to the main motor. I do.

In this embodiment, the frame 2 to which the drive unit 10 is assembled is an integral frame. However, a divided frame formed by fastening a crown, a column, and a bed with tie rods and nuts is also applicable.

[0017]

As is apparent from the above description, according to the present invention, a drive unit that can be easily assembled and disassembled can be provided, and the frame structure can be simplified. Also, since the drive unit is assembled from above the mechanical press, the installation space between adjacent mechanical presses may be small, and there is no open part below the frame mounting part of the drive unit other than the through hole of the connecting rod and the rod of the counter balancer. Therefore, the lubricating oil does not scatter from below the drive unit, and the lubricating oil can be easily collected. Furthermore, when the frame and the drive unit are assembled, work is performed in parallel with each other, so that the assembly work period can be shortened.

[Brief description of the drawings]

FIG. 1 is an overall front view of a mechanical press according to an embodiment of the present invention.

FIG. 2 is also a top view

FIG. 3 is a left side view of the drive unit.

FIG. 4 is a right side view of the drive unit.

[Explanation of symbols]

1 is a mechanical press, 2 is a frame, 2A is a bed plate, 2B is an oil receiving plate, 2C is a left side plate,
2D is a right side plate, 2E is a drive unit mounting portion, 2F is a guide mounting portion, 3 is a bolster, 4 is a slide, 5 is a connecting rod, 5A is a large ring portion, 6 is a nut, 6A is a female screw portion, and 7 is a ball. Screw, 7A is a male thread, 8, 18 are bolts, 9 is a slide guide, 1
0 is a drive unit, 11 is an eccentric shaft, 11A is an eccentric part, 12 is a first bearing device, 13 is a first block, 13
A and 13B are holes, 13C is a step, 14 and 24 are sliding bearings, 15 is a flange, 15A is a flange, 16 and 26 are rolling bearings, 22 is a second bearing device, 23 is a second block, and 23A is A hole, 23C is a step, 25 is a boss support, 25A is a flange, 27 is a flywheel, 28 is a clutch / brake, 29 is a counter balancer, 29A is a rod, and 30 is a vibration isolator.

Claims (2)

[Claims] 1. A mechanical press for vertically moving a slide via a connecting rod rotatably connected to an eccentric portion of a crankshaft, comprising: a) a first bearing device rotatably supporting a crankshaft provided at one end; A second bearing device is provided at the other end. B) A boss support is fixed to the second bearing device and rotatably supports a flywheel provided with a clutch and a brake. C) At least one connecting rod is rotatably fitted to the eccentric portion of the crankshaft. D) The connecting rod is divided into a large ring portion that fits into the eccentric portion of the crankshaft and a female screw portion that is screwed with a male screw portion for adjusting the die height of the slide. E) The crankshaft is positioned by positioning means provided on at least one of the first bearing device and the second bearing device. F) The first bearing device and the second bearing device are positioned on the upper portion of the frame, fastened by fastening means, and the large ring portion of the connecting rod and the female screw portion provided on the slide side are connected. A mechanical press comprising the drive unit configured as described above. 2. A machine press frame according to claim 1, further comprising: a bed plate on which a bolster is fixed by fastening means; a left side plate having a drive unit assembly portion on an upper side and a slide guide portion on an inner surface. A mechanical press, wherein a right side plate and a right side plate sandwich a bed plate and an oil receiving plate provided above so as to be integrally formed.