CN111255819A - Forging and pressing machine - Google Patents

Abstract

The invention discloses a forging machine, which comprises a crankshaft, wherein one end of the crankshaft is provided with a brake, the other end of the crankshaft is provided with a clutch, the clutch comprises a flywheel, a driven shaft sleeve and a driving disc which are sequentially sleeved on the crankshaft, the flywheel is arranged on the crankshaft through a bearing, the driven shaft sleeve and the driving disc are arranged in a cavity of the flywheel, a shell is fixedly connected outside the cavity of the flywheel, the driven shaft sleeve is fixedly connected with the crankshaft, a plurality of movable friction blocks are embedded on the outer ring of the driven shaft sleeve, the driving disc is sleeved on the crankshaft in a hollow manner and is connected with the shell in a circumferential fixed and axial movable manner through a plurality of driving pins, a plurality of springs are sleeved on the driving pins, and the driving disc and the shell are connected in a, the cylindrical cylinder cavity is communicated with a vent hole arranged in the center of the shell and is sealed by a sealing ring arranged between the driving disc and the shell. The technical scheme adopts the structural design that the clutch and the brake are separated, and has simple structure and reliable operation.

Description

Forging and pressing machine

Technical Field

The invention relates to forging machinery.

Background

At present, a clutch and a brake of a mechanical press are arranged on one end of a crankshaft close to a flywheel together, and a mechanical press clutch brake device is disclosed in patent No. ZL 99805307.4; the clutch and the brake of the clutch brake device of the mechanical press are connected into a whole and arranged at one end of the crankshaft close to the flywheel, and the clutch and the brake are connected into a whole and arranged at one end of the crankshaft close to the flywheel, so that the stress at two ends of the crankshaft is unbalanced, a crankshaft supporting part, such as a bearing, is easy to lose efficacy, the service life is shortened, and the working precision of the press is influenced. When the mechanical press clutch brake device is used for a high-speed mechanical press, the defects are serious, the mechanical press clutch brake device adopts a hydraulic cylinder switching mechanism to switch the clutch and the brake, the structure is complex, and leakage is easy to generate. In addition, the existing clutch has the defects of complex structure, large space requirement (arranged outside a flywheel), large brake inertia (the clutch is mainly arranged on a crankshaft) and the like.

Disclosure of Invention

In order to solve the technical problems, the invention aims to provide a forging machine, which adopts a structural design that a clutch is separated from a brake, adopts pneumatic control, has simple structure, reliable transmission torque and safe overload operation, increases the inertia of a flywheel (a shell and the flywheel rotate simultaneously), has simple and reliable transmission of compressed air, has a cylinder with a closed shell, has good sealing property, and is beneficial to improving the transmission precision and the service life of the clutch.

In order to achieve the purpose, the invention adopts the following technical scheme:

the forging and pressing machine comprises a crankshaft, a brake is arranged at one end of the crankshaft, a clutch is arranged at the other end of the crankshaft, the clutch comprises a flywheel, a driven shaft sleeve and a driving disc which are sequentially sleeved on the crankshaft, the flywheel is arranged on the crankshaft through a bearing, the driven shaft sleeve and the driving disc are arranged in a cavity of the flywheel, a shell is fixedly connected outside the cavity of the flywheel, the driven shaft sleeve is fixedly connected with the crankshaft, a plurality of movable friction blocks are embedded on the outer ring of the driven shaft sleeve, the driving disc is sleeved on the crankshaft in a hollow mode and is connected with the shell in a circumferential fixed and axial movable mode through a plurality of driving pins, a plurality of springs capable of giving the driving disc a trend close to the shell are sleeved on the driving pins, the driving disc is connected with the shell in a nested and sliding mode, a cylindrical cylinder cavity is formed between the driving disc and the, the cylindrical cylinder cavity is sealed by a sealing ring arranged between the driving disc and the shell.

Because the technical scheme is adopted, the structural design that the clutch is separated from the brake is adopted, so that the stress at two ends of the crankshaft tends to be balanced; the clutch has small volume, light weight and more sensitive action, prolongs the service life of the crankshaft support and improves the working precision of the high-speed mechanical press; the clutch is pneumatically controlled, the structure is simple, the transmission torque is reliable, the overload operation is safe, the inertia of the flywheel is increased (the shell and the flywheel rotate simultaneously), the transmission of compressed air is simple and reliable, the shell is similar to a closed cylinder, the sealing performance is good, and the transmission precision and the service life of the clutch are improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a right side view of fig. 1.

Detailed Description

The following describes a detailed embodiment of the present invention with reference to the accompanying drawings.

Example 1:

as shown in fig. 1, 2 a forging and pressing machinery, including bent axle 1, bent axle 1's one end installation stopper, bent axle 1's the other end installation clutch, the clutch is including establishing flywheel 3, driven shaft sleeve 8 and the driving disk 9 on bent axle 1 in proper order, flywheel 3 passes through bearing 2 and installs on bent axle 1, set up driven shaft sleeve 8 and driving disk 9 in the 3 cavities of flywheel, 3 cavities outside fixed connection casing 7 of flywheel, driven shaft sleeve 8 and bent axle 1 fixed connection, it has a plurality of movable friction blocks 6 to inlay on driven shaft sleeve 8's the outer lane, driving disk 9 empty cover is connected with casing 7 on bent axle 1 and through a plurality of driving pins 5 with the fixed mode that can remove with the axial of circumference, the cover is equipped with a plurality of plays that can give driving disk 9 and be close to casing 7 trend on driving pin 5 and is equipped with The spring 4, the driving disk 9 and the shell 7 are connected in a nested sliding mode, so that a cylindrical cylinder cavity is formed between the driving disk 9 and the shell 7, the cylindrical cylinder cavity is communicated with a vent hole 71 arranged in the center of the shell 7, and the cylindrical cylinder cavity is sealed through a sealing ring arranged between the driving disk 9 and the shell 7.

When the compressed gas is not supplied to the air vent hole 71 of the housing 7, the driving disk 9 is moved close to the housing 7 by the tension of the spring 4 to be separated from the driven bush 8, so that the rotational power of the flywheel 3 is not transmitted to the driven bush 8. When compressed air is introduced into the air vent 71 on the shell 7, the compressed air enters the cylindrical air cylinder cavity to push the driving disk 9 to overcome the spring force to move and press the movable friction block 6 embedded in the driven shaft sleeve 8, so that the driving disk 9, the driven shaft sleeve 8 and the flywheel 3 are mutually attached and synchronously rotate through the movable friction block 6, and the transmission of a power source is realized. When the compressed air source stops, the driving disk 9 is pulled back by the tension of the compression spring in the shell 7, the pressing of the movable friction block 6 is released, and the driving disk 9, the driven shaft sleeve 8 and the flywheel 3 are in a free separation state, so that the power source is separated.

Claims (1)

1. Forging and pressing machinery, including bent axle (1), its characterized in that, the one end installation stopper of bent axle (1), the clutch is installed to the other end of bent axle (1), the clutch is including establishing flywheel (3), driven axle sleeve (8) and driving disc (9) on bent axle (1) in proper order, install on bent axle (1) flywheel (3) through bearing (2), set up driven axle sleeve (8) and driving disc (9) in flywheel (3) cavity, a casing (7) of flywheel (3) cavity outside fixed connection, driven axle sleeve (8) and bent axle (1) fixed connection, it has a plurality of movable friction piece (6) to inlay on the outer lane of driven axle sleeve (8), driving disc (9) empty cover is on bent axle (1) and through a plurality of drive pin (5) with a plurality of movable friction block (6), drive disc (9) are empty to be overlapped on bent axle ( The driving disc is connected with the shell (7) in a circumferentially fixed and axially movable mode, a plurality of springs (4) which enable the driving disc (9) to approach the shell (7) tend to be sleeved on the transmission pin (5), the driving disc (9) and the shell (7) are connected in a nested sliding mode, so that a cylindrical cylinder cavity is formed between the driving disc (9) and the shell (7), the cylindrical cylinder cavity is communicated with a vent hole (71) formed in the center of the shell (7), and the cylindrical cylinder cavity is sealed through a sealing ring formed between the driving disc (9) and the shell (7).

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