JPH0539769Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial field of application This invention relates to a roll shaft drive mechanism in a device such as a cold roll forming machine or a leveler in which many roll shafts are arranged in parallel. The present invention relates to a multi-parallel roll shaft drive mechanism that eliminates the support shaft of an intermediate idle gear provided for driving, reduces the distance between adjacent roll shafts, and reduces the size and weight of the device.

BACKGROUND ART Cold roll forming machines, levelers, etc. perform the required forming and rolling while advancing the strip material in the required direction.Since many required forming rolls and rolling rolls are arranged in parallel, each roll A large number of roll shafts are arranged in parallel at required intervals, and
It is necessary to rotate each roll shaft in the same direction.

For this reason, conventionally, as shown in FIG. 4, an intermediate shaft 2 is disposed between the roll stands 1, 1, an idle gear 3 is rotatably supported on the intermediate shaft 2, and a lower roll shaft of each roll stand 1 is provided. The roll shaft 4 is meshed with a drive gear 5 fixed to the drive gear 4, and the drive force of the roll shaft 4, which is rotationally driven by a power source, is transmitted to each drive gear 5 in the same rotational direction.

In the conventional configuration, since the intermediate shaft 2 that pivotally supports the idle gear 3 is essential, the distance between each roll stand 1, 1 inevitably increases, and for example, in the case of a roll forming machine, the longitudinal direction and height of the device There were restrictions on the dimensions in the direction, and there was a limit to how much it could be made smaller and lighter.

In other words, today's cold roll forming machines often use multi-stage arrangements due to demands such as diversification of forming shapes, improvement of forming efficiency, and forming of thin-walled materials.
Although there is a strong demand for molding machines to be made smaller and lighter, there has been a problem in that further reductions in size and weight cannot be achieved due to the limitations of the roll drive mechanism described above.

Purpose of the invention In view of the current situation, this invention eliminates the intermediate shaft of the idle gear, which was indispensable in the past, in a roll shaft drive mechanism that arranges a large number of roll shafts in parallel and rotates each roll shaft in the same direction. The aim is to create a multiple parallel roll shaft drive mechanism that can be made smaller and lighter.

Configuration of the device This device is a roll shaft drive mechanism that rotates multiple roll shafts in the same direction in which idle gears rotatably supported on a shaft and driving force transmission gears that support the shaft are arranged on each roll shaft so that they alternately face each other on adjacent roll shafts, and the drive force transmission gears of each roll shaft are configured to have two gear trains in which the drive force transmission gears of each roll shaft are linked to other drive force transmission gears every other one via the idle gears of the adjacent roll shafts, and the multiple parallel roll shaft drive mechanism is characterized in that a drive force in the same rotational direction is transmitted to every other roll shaft via the idle gear from any roll shaft of each gear train that is driven to rotate.

In other words, when gear-driving parallel logarithmic axes in the same direction, this invention installs an idle gear on the roll drive shaft and drives every other parallel shaft, without using the conventional intermediate shaft. However, two adjacent shafts are rotated in the same direction, and a large number of parallel roll shafts are rotated in the same direction.

This invention is applicable to any known cold roll forming machine, in addition to a cold roll forming machine having forming rolls arranged at both ends of the roll axis as shown in the embodiment.
It can also be applied to a device such as a leveler in which a large number of roll shafts are arranged in parallel and driven to rotate in the same direction.

DISCLOSURE BASED ON DRAWINGS OF THE INVENTION FIG. 1 is an explanatory diagram of the configuration of a forming roll stand incorporating a roll shaft drive mechanism according to the invention.

Figures 2 and 3 are schematic diagrams showing the meshing state of the idle gear and drive shaft gear of the roll shaft drive mechanism according to this invention, and Figure 2 shows the lower roll shaft gear and the upper roll shaft that meshes with it. FIG. 3 shows the drive of the lower roll shaft parallel to the forming line direction.

Here, an example in which the present invention is applied to a cold roll forming machine having a configuration in which forming rolls are arranged at both ends of the roll axis will be described.

The roll forming machine is composed of a large number of roll stand groups (not shown), and the drive mechanism of each roll stand is such that upper and lower roll shafts 10 and 11 are pivotally supported by bearings 12, and a driving force transmission mechanism that is fixed to each shaft. gear 1
3 and 14 are in mesh with each other, and the driving force transmitted to the transmission gear 13 of the lower roll shaft is transmitted to the driving force transmission gear 14 of the upper roll shaft 11 which meshes with each other.

Here, a forming roll 1 is attached to both ends of each roll shaft 10, 11 which is supported by a pair of bearings 12, 12.
5 and 16 are attached, and a gear drive mechanism is arranged in the center between the pair of bearings 12 and 12 of the roll shafts 10 and 11.

As shown in Fig. 3, many lower roll shafts 10 are arranged in parallel.
, a driving force transmission gear 13 and an idle gear 20 rotatably supported via a bearing 21 are disposed near the pair of bearings 12 and 12, respectively, and are arranged in the orthogonal direction of the axes, that is, the direction of the molding material. A transmission gear 13 is connected between adjacent roll shafts 10 in the traveling direction.
The driving force transmission gear 13 and the idle gear 20 are arranged in a so-called staggered manner so that the idle gears 20 and 20 mesh with each other alternately.

In other words, the driving force transmission gears 13a, 13b of each roll shaft 10 are interlocked with every other driving force transmission gear 13a, 13b via the idle gears 20, 20b of the adjacent roll shaft 10. gear train, 13a, 20a group, 13b, 20b group
It consists of a set of configurations.

Functions and effects of the invention In this gear arrangement, as shown in Fig. 3,
Any roll axis of each gear train to be rotationally driven, for example, the lower roll axis 10 at required intervals or patterns.
When the sprockets 30a and 30b are provided and rotated, the driving force in the same rotational direction can be transmitted to every other driving force transmission gear 13 via the idle gear 20.

By arranging the idle gear 20 on each lower roll shaft 20, the conventional intermediate shaft can be eliminated, and the distance between the lower roll shafts 10 can be made closer.

Therefore, the roll forming machine can be easily made smaller and lighter, and when a plurality of roll stands are combined into a unit, the configuration is extremely advantageous in terms of equipment installation space and cost reduction.

Moreover, since the intermediate shaft is eliminated and the distance between the lower roll shafts 10 can be made closer, the idle gear 20 having a larger diameter than the conventional one is used, so there is an advantage that the torque transmission strength can be increased.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of the configuration of a forming roll stand incorporating a roll shaft drive mechanism according to this invention.
Figures 2 and 3 are schematic diagrams showing the meshing state of the idle gear and drive shaft gear of the roll shaft drive mechanism according to this invention, and Figure 2 shows the lower roll shaft gear and the upper roll shaft that meshes with it. The gears are shown, and FIG. 3 shows the drive of the lower roll shafts parallel to the forming line direction.
FIG. 4 is an explanatory diagram of the configuration of a forming roll stand showing the drive mechanism of a conventional roll forming machine. 10, 11... Roll shaft, 12, 21... Bearing, 13, 13a, 13b... Drive force transmission gear, 15, 16... Forming roll, 20, 20a,
20b...Idle gear, 30a, 30b...Sprocket.

Claims (1)

[Scope of Claim for Utility Model Registration] In a roll shaft drive mechanism that arranges a large number of roll shafts in parallel and rotates each roll shaft in the same direction, an idle gear rotatably supported on the shaft and a driving force transmission gear fixed on the shaft. are arranged on each roll shaft so that the adjacent roll shafts face each other alternately, and the driving force transmission gear of each roll shaft connects to every other driving force transmission gear via the idle gear of the adjacent roll shaft. A multi-parallel roll shaft consisting of two sets of interlocked gear trains, characterized in that driving force in the same rotational direction is transmitted from any roll shaft of each rotatably driven gear train through an idle gear. Drive mechanism.