JPH09225686A - Knuckle press - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the knuckle press excellent in integrality and transportability by bisecting a frame provided with a slide drive device inside into a front frame arranged with a load transmission mechanism and a rear frame arranged with a torque/energy transmission mechanism. SOLUTION: A rotary power from a drive shaft 31 is transmitted to a triangular structured bell crank 11 through a crank mechanism and connecting rod 22, a slide 6 is elevated through a drive link 17. A crown 3 of frame of the knuckle press provided with the slide drive mechanism inside is divided into two parts. In its front frame 3A, a load transmission mechanism, which consists of a crank shaft 18 arranged with a shaft part 18 fixed with a main gear 21 and an eccentric part 18B and a bell crank 11 connected thereto with a connecting rod 22 and arranged with a drive link 17, is arranged. Further, in a rear frame 3B, a torque/energy transmission mechanism, which consists of a power source, its stopping device, a drive shaft 31, an intermediate shaft 35 arranged with a main pinion 37, etc., is arranged.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a knuckle press having a slide drive device using a bell crank having a triangular structure.

[0002]

2. Description of the Related Art In recent years, a knuckle press most used for cold forging and suitable for compression processing such as coining and sizing has a small overall machine height, while maintaining an advantage with respect to slide speed change in a press working area. , It is required to expand the automation tolerance. For this reason, as a conventional knuckle press, a knuckle press having a slide driving device using a triangular structure bell crank installed therein, for example, Japanese Patent Laid-Open No. 5-228694 is disclosed.

[0003]

Since the frame in which the slide driving device using the above-described triangular structure bell crank is installed is conventionally formed as an integral frame,
It took a lot of time to incorporate the slide drive device into the frame. Further, in the case of a large knuckle press, it was difficult to manufacture because of transportation restrictions.

An object of the present invention is to provide a knuckle press that solves the above-mentioned problems, shortens the time required for assembling a slide drive device into a frame, and adapts to transportation restrictions.

[0005]

In order to solve the above problems, the present invention rotatably supports a first fulcrum of a triangular structure bell crank having fulcrums at three vertices at an upper portion of a main body frame. , A knuckle press in which a slide drive device is constructed, in which a second fulcrum and a vertically movable slide are connected by a drive link, and a third fulcrum and a crank mechanism provided in a frame are connected by a connecting rod. The frame in which the slide driving device is installed is divided into a front frame and a rear frame.

[0006] The load transmission mechanism of the slide drive device, in which the front frame is composed of a crankshaft on which a main gear is fixedly mounted, a connecting rod connecting the crankshaft and the bellcrank, and a drive link connecting the bellcrank and the slide. To provide. Further, the rear frame includes a power source, a power connecting / disconnecting / stopping device, and a drive shaft having a drive gear, or a slide drive device including a drive shaft, an intermediate gear, and an intermediate shaft provided with a main pinion. A torque / energy transmission mechanism is provided.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the knuckle press of the present invention is shown in FIGS. 1 to 3, a knuckle press 1 includes a crown 3 having a slide drive device 2.
And columns 4 and 4 having guide devices (not shown) for guiding the slide 6, and a bed 5 having a bolster 7 fixed to the upper part and a lower knockout device 8 inside.
Formed from The crown 3 is divided into a front frame 3A and a rear frame 3B, and the front frame 3A is provided with a load transmission mechanism 2A of the slide drive device 2 and is attached to a connecting portion 9 with the front frame 3A. The rear frame 3B is provided with the torque / energy transmission mechanism 2B of the slide drive device 2.

In the front frame 3A provided with the load transmission mechanism 2A of the slide drive device 2, the bell cranks 11, 11 having a triangular structure having fulcrums at the three vertices are connected to the first link portion 1.
One ends of 1A and 11A are rotatably connected to the first fulcrum pins 13 and 13 fixed to the upper portion of the front frame 3A. At the same time, the other end of the slide 6 and the connecting pin 1 are movable up and down.
The drive links 17 and 17 connected by 6 and 16 are connected by the second fulcrum pins 14 and 14.

The crankshaft 18, which is rotatably supported behind the front frame 3A, has an eccentric portion 18 of the crankshaft 18.
B, 18B rotatably connecting rods 22, 22
The main gear 21 adjacent to the shaft portion 18A,
21 is fixed with fixing pins 19 and 19. Further, the connecting rods 22 and 22 include the second link portions 11B and 11B and the third link portions 11C and 11 of the bell cranks 11 and 11, respectively.
The connecting portion with C is connected with the third fulcrum pins 15, 15.

In the rear frame 3B provided with the torque / energy transmission mechanism 2B of the slide drive device 2, the drive shaft 31 provided with drive gears 31A and 31A is rotatably supported by the rear frame 3B, and one end of the drive shaft 31 is provided. Brake 24 on the other end, flywheel 32 and clutch 3 on the other end
3 are provided. Further, the intermediate shaft 35 fixed to the rear frame 3B has a drive gear 31A of the drive shaft 31,
31A, the intermediate gears 36, 36 meshing with 31A, and the crankshaft 1
Main pinion 3 fixed to main gears 21 and 21
7, 37 are provided.

Although not shown, when the rotation of the main motor is transmitted to the flywheel 32 via a belt, the clutch 33 and the brake 34 are engaged to rotate the drive shaft 31 and mesh with the drive gears 31A and 31A. Intermediate gear 3
Rotate 6, 36. Due to the rotation of the intermediate gears 36, 36, the main pinions 37, 37 also rotate, and the main gears 21, 21 that mesh with each other rotate. By the rotation of the main gears 21, 21, the eccentric portions 18B, 18B of the crankshaft 18 and the bell cranks 11, 11 are connected to the bell cranks 11, 11 via the connecting rods 22, 22 which are connected by the third fulcrum pins 15, 15. The drive links 17, 17 connected by the two fulcrum pins 14, 14 and the slide 6 connected by the connecting pins 16, 16 are moved up and down.

Assembling work of the load transmission mechanism 2A of the slide drive device 2 into the front frame 3A and torque / energy transmission mechanism 2B of the slide drive device 2 into the rear frame 3B.
3A in which the load transmission mechanism 2A of the slide drive device 2 is incorporated by advancing the assembling work in parallel.
And the torque / energy transmission mechanism 2 of the slide drive device 2.
The rear frame 3B incorporating B is the front frame 3A
And the rear frame 3B are connected by a connecting portion 9 to form a crown 2 in which the slide driving device 2 is installed.

When the crown 2 is disassembled during transportation, the front frame 3A in which the load transmission mechanism 2A of the slide drive device 2 is incorporated and the slide drive device 2 at the connecting portion 9 between the front frame 3A and the rear frame 3B. The torque / energy transmission mechanism 2B is incorporated into the rear frame 3B.

[0014]

As is apparent from the above description, according to the present invention, the frame in which the slide driving device is installed is divided into the front frame and the rear frame, and the work of incorporating the slide driving device into the frame is loaded. By advancing the transmission mechanism and the torque / energy transmission mechanism in parallel, it is possible to reduce the time required for assembling the slide drive device into the frame. In addition, large knuckle presses can comply with transportation restrictions.

[Brief description of drawings]

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

FIG. 2 is a side sectional view of a knuckle press according to an embodiment of the present invention.

FIG. 3 is a top sectional view of a knuckle press according to an embodiment of the present invention.

[Explanation of symbols]

1 is a knuckle press, 2 is a slide drive device, 2A is a load transmission mechanism, 2B is a torque / energy transmission mechanism, 3 is a crown, 3A is a front frame, 3B is a rear frame, 4 is a column, 5 is a bed, and 6 is a slide. , 7 is a bolster, 8 is a lower knockout device, 9 is a connecting portion, 11 is a bell crank, 11A is a first link, 11B is a second link, and 11C.
Is a third link, 13 is a first fulcrum pin, 14 is a second fulcrum pin, 15 is a third fulcrum pin, 16 is a connecting pin, 17 is a drive link, 18 is a crankshaft, 18A is a shaft part, and 18B is an eccentric part. , 19 is a fixed pin, 21 is a main gear, 22 is a connecting rod, 31 is a drive shaft, 31 is a drive gear, 31A is a drive gear, 32 is a flywheel, 33 is a clutch, 34 is a brake, 35 is an intermediate shaft, 36 is an intermediate gear, and 37 is The main pinion.

Claims (1)

[Claims] 1. A bell-shaped crank having a triangular structure having fulcrums at three vertices, a first fulcrum being rotatably supported on an upper portion of a frame, and a second fulcrum and a vertically movable slide being connected by a drive link. A knuckle press having a slide driving device formed by connecting a third fulcrum and a crank mechanism provided in the frame with a connecting rod, wherein (a) a frame in which the slide driving device is installed is a front frame and a rear frame. It is divided into two parts. (B) A load transmission mechanism for a slide drive device, which includes a crankshaft on which a main gear is fixed, a connecting rod that connects the crankshaft and the bell crank, and a drive link that connects the bell crank and the slide to the front frame. To provide. (C) A slide drive device including a power source, a power connecting / disconnecting / stopping device, a drive shaft having a drive gear, or a drive shaft, an intermediate gear, and an intermediate shaft provided with a main pinion on the rear frame. The torque and energy transmission mechanism of A knuckle press characterized by the above.