JPS6013597Y2 - Press drive device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a drive device for a press, and more particularly to a power transmission device in the drive device.

For presses, when multiple sets of press machines equipped with the required set of press dies are arranged in tandem and the multiple press machines are driven synchronously by the same drive source, it is possible to transmit large loads between each press machine. This is done through a gear train.

The meshing of this gear train must be accurate for reasons such as synchronizing each press machine and preventing damage to the gears, but each press machine is deformed due to the reaction force during press forming, so the meshing of the gear train may go out of order. is possible.

As a method for preventing this, a structure as shown in FIGS. 1 and 2, for example, can be considered, but it has the disadvantages described below.

In Figures 1 and 2, 1 and 2 are press machines, 3 and 4 are bets, 5 and 6 are applied, 7 and 8 are crowns, 9 and 10 are slides, 11 and 12 are main gears, and 13 are gears. It is a column.

A driving source (not shown) drives any one gear of the gear train 13.
When driven, the slides 9 and 10 move up and down to perform press forming.

As mentioned above, due to the reaction force during press forming, the crown 7
．． 8 is bent.

In order to prevent the occurrence of misalignment of the gear train 13 due to this deflection, in the example shown in FIG. I try not to cause any harm.

In the example shown in FIG. 2, both presses 1 and 2 are tied together with a large number of tie bars 15 so that the crown 7.8 does not bend.

However, in both of the above examples, the structure is such that the deflection is forced by the strength of the member, resulting in a rigid structure, which is expensive to manufacture, and requires troublesome work to install and remove gearbox bolts and tie bars, making maintenance work troublesome.

The present invention was developed to solve this problem, and the gear fixed to one press in the gear train connecting the main gear of one press and the main gear of the other press. Power can be transmitted between the gear fixed to the other press machine via a floating gear,
The axial center of the one gear and the axial center of the floating gear, and the axial center of the other gear and the axial center of the floating gear are connected via a rotatably provided link plate. be.

Embodiments of the present invention will be described below based on the drawings.

In FIG. 3, reference numbers are given to the same components as in FIGS. 1 and 2.

In the gear train 13, 16 and 17 are intermediate gears, and a drive source (not shown) is normally connected to one of the intermediate gears.

Further, the intermediate gear 16 is connected to the intermediate gear 16 by the idler gears 18 and 19 that are meshed with the intermediate gears 16 and 17, respectively, and the floating gear 20 that is meshed with the idler gears 18 and 19.
Power is transmitted between and 17.

More specifically, the idler gears 18 and 19 are crown 7.
．． It is pivoted on a pivot 23.24 which is supported on a bracket 21.22 fixed to 8.

Further, link plates 25 and 26 are rotatably attached to the pivot shafts 23 and 24, and the tips thereof are connected by a floating ring 27, and the floating gear 20 described above is connected to the floating ring 27.
is pivoted.

When the gear train 13 is configured as described above, when the crown 7.8 is bent and the center distance between the idler gears 18 and 19 changes, the floating gear 20 escapes upward and the crown 7.
．． Absorbs the deflection of 8.

Of course, idler gear 18.19 and floating gear 2
Since the center-to-center distance with respect to 0 is guaranteed by the link plates 25 and 26, the meshing is always maintained in an optimal state.

It should be noted that the present invention is not limited to the above-mentioned embodiments, and any structure may be used as long as the distance between the centers of the gears constituting the gear train is maintained while allowing relative movement between the gears.

As described above, according to the present invention, since the structure allows the crown to flex, it is possible to synchronize and transmit large loads to each press machine via the gear train, and there is no need for a rigid structure, making it lightweight. It is possible to provide a drive device that is simple and has a significantly low manufacturing cost.

[Brief explanation of the drawing]

1 and 2 are schematic diagrams of a press equipped with a conventional rigid drive device, and FIG. 3 is an explanatory diagram of a press equipped with a drive device according to the present invention. 1.2 is a press machine, 11.12 is a main gear, 13 is a gear train, 23.24 is a pivot, and 25.26 is a link plate.

Claims (1)

[Scope of utility model registration request] In a gear train that connects the main gear of one press machine and the main gear of the other press machine, a floating gear is connected between the gear fixed to one press machine and the gear fixed to the other press machine. capable of transmitting power, the shaft of the one gear and the shaft of the floating gear, and the shaft of the other gear and the shaft of the floating gear,
A press drive device characterized by being connected via a rotatably provided link plate.