JPH06210354A - Connecting device for cold roll molding machine - Google Patents

Abstract

PURPOSE:To provide a connecting device for a cold roll molding machine whigh can connect a roll molding unit and a rotary driving device, easily and in a short time, which have different shaft centers to each other. CONSTITUTION:A 1st clutch member 7 is arranged at the tip of the roll shaft of the roll molding unit. A bearing 1b which supports a drive shaft 6a, a guide arm 1d wherein the base part is set fixedly to this bearing 1b, an abutting part 1e having a length from the shaft center of the bearing 1b to the 1st clutch member 7 as it approaches or separates by a distance nearly equal to the radius of the 1st clutch member 7 and a stand 1a provided with an air cylinder 1g moving them vertically are provided between the roll molding unit and the rotary driving device. A 2nd clutch member 8 engaged with the 1st clutch member 7 is arranged at the tip of the drive shaft 6a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cold roll forming machine for continuously bending a metal coil, and when a roll forming unit is exchanged, it is extremely easy to install a unit having a different axial center and a rotary drive unit. The present invention also relates to a connecting device for a cold roll forming machine, which can be connected in a short time.

[0002]

2. Description of the Related Art A cold roll forming machine continuously bends a metal coil while passing it through a plurality of rotating forming rolls to form a continuous long forming material. And
When the process of the cold roll forming machine is changed due to the change of production lot, etc., the roll drive unit that rotates the roll forming unit, which is a unit composed of a plurality of tandem rolls and is responsible for specific forming And a new desired roll forming unit is installed instead.

When the roll forming unit newly installed on the base and the rotary drive unit are connected, the positional relationship between the rotary drive unit and the roll forming unit in the left-right direction is set in advance so as to match each other. Since the installation error does not occur, the vertical position relationship between the rotary drive and the roll may change the position of the roll up and down depending on the molding process contents. A universal joint is used between the rolls of the roll forming unit to absorb the vertical displacement of the mutual axes and to connect the rolls.

[0004]

However, in the connecting work using the conventional universal joint described above, the universal joint itself is heavy, and the work is carried out by suspending the universal joint and connecting it. However, a lot of work and a long-time connection work were forced.

Therefore, according to the present invention, when a roll forming unit is replaced, a unit for a cold roll forming machine which can connect a unit having a different axial center and a rotary drive unit very easily and in a short time. An object is to provide a coupling device.

[0006]

In order to achieve the above-mentioned object, a connecting device for a cold roll forming machine of the present invention comprises a roll shaft of a cold roll forming machine and a rotary drive device for rotating the roll shaft. In a coupling device for a cold roll forming machine, in which a drive shaft extending through a universal joint is clutch-matched so that the shaft centers thereof are aligned, a bearing that axially supports the drive shaft and a base end portion of the bearing are fixedly provided. A guide arm having a length that extends from the shaft center of the bearing to the clutch of the roll shaft while separating from the shaft center of the bearing by a distance corresponding to approximately the radius of the clutch of the roll shaft; A stand provided with a drive member for moving the bearing and the guide arm in a vertical direction with respect to the clutch is disposed between the cold roll forming machine and the rotary drive device. .

In addition, the guide arm may be provided with a drive member for allowing the tip portion of the guide arm to extend and contract in the roll axis direction of the cold roll forming machine.

[0008]

A coupling for a cold roll forming machine, in which a roll shaft of a cold roll forming machine and a drive shaft extending from a rotary drive device for rotating the roll shaft via a universal joint are clutch-connected with their axial centers aligned. In the device, a bearing that supports the drive shaft and a roll shaft while a base end portion is fixed to the bearing and a tip end portion is separated from a shaft center of the bearing by a distance corresponding to a substantially radius of a clutch of the roll shaft. Of the cold roll forming machine having a guide arm having a length up to the clutch and capable of abutting on the outer circumference of the clutch, and a drive member for vertically moving the bearing and the guide arm with respect to the clutch. And the rotary drive unit, the drive member allows the bearing and the guide arm to be connected when the roll shaft of the cold roll forming machine and the drive shaft of the rotary drive unit are clutch-coupled. Is moved up and down, by abutting the guide arm tip portion of the clutch outer periphery of the roll shaft, the axis of the drive shaft are easily clutching Consistent with the axis of the roll shaft.

Further, when the guide arm is provided with a drive member that allows the distal end portion of the guide arm to expand and contract in the roll shaft direction of the cold roll forming machine, the clutch of the roll shaft and the clutch of the drive shaft are separated to some extent. The guide arm can be extended and brought into contact with the roll shaft clutch, and the guide arm can be reduced even when the roll shaft clutch and the drive shaft clutch come close to each other. It does not interfere with the clutch connection.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a partial sectional view of a connecting device for a cold roll forming machine according to the present invention, and FIG. 2 is an explanatory view of a connecting device for a cold roll forming machine according to the present invention.

Reference numeral 1 in the drawing denotes a connecting device for a cold roll forming machine of the present invention, which is a roll forming unit 3 of the cold roll forming machine mounted on a base 2 and a roll shaft of the roll forming unit 3. It is installed on the base 2 between the rotation drive device 5 for rotating the motor 4. The positional relationship in the left-right direction is set so as to match in advance. A universal joint 6 is used between the coupling device 1 and the rotary drive device 5 to absorb and shift the axial center of the drive shaft 5a of the rotary drive device 5 and the roll shaft 4.

At the tip of the roll shaft 4 of the roll forming unit 3, there is provided a first clutch member 7 in which a clutch pawl 7a is formed on the outer periphery of the end surface and a conical tapered hole 7b is formed inside thereof. There is.

The connecting device 1 includes a stand 1a fixedly mounted on a base 2 and a drive shaft 6a at the end of a universal joint 6.
Is rotatably rotatably supported, an air cylinder 1c that allows the bearing 1b to move in the vertical direction, and a bearing 1b that is fixed to and extends in the direction of the first clutch member 7. The guide arm 1d is provided.

The drive shaft 6a extending to the roll forming unit 3 side through the bearing portion 1b of the stand 1a has a conical taper surface 6b formed at the tip thereof for engaging with the taper hole 7b of the clutch pawl 7a. And on the outer peripheral surface,
A second clutch member 8 connected to the drive shaft 6a by a key (not shown) is arranged in the rotational direction while allowing a slight movement in the axial direction by using a coil spring 6c. A clutch pawl 8a that engages with the clutch pawl 7a of the first clutch member 7 is formed at the tip of the second clutch member 8.

Further, the guide arm 1d is provided with a contact portion 1e for contacting the upper surface of the first clutch member 7 and an air cylinder 1f for moving the contact portion 1e in the front-back direction. The lower end of the contact portion 1e is separated from the axial center of the bearing portion 1b by a distance substantially corresponding to the radius of the first clutch member 7, and by setting in this way, the contact portion 1e is formed.
When the lower end is brought into contact with the surface of the first clutch member 7, the axial center of the first clutch member 7 and the axial center of the drive shaft 6a automatically coincide with each other.

However, when the distance between the lower end of the contact portion 1e and the shaft center of the bearing portion 1b is exactly the radius of the first clutch member 7, the first clutch member 7 and the second clutch member 8 are When connecting and rotating, the contact portion 1e remains in contact with the outer peripheral surface of the first clutch member 7 and impedes rotation, so that the lower end of the contact portion 1e and the shaft center of the bearing portion 1b. It is preferable that the distance be slightly larger than the radius of the first clutch member 7.

The operation of the connecting device 1 for a cold roll forming machine having such a structure will be described below. First, the base 2
The roll forming unit 3 is placed slightly apart from the above predetermined position. Next, the air cylinder 1c of the coupling device 1 is driven to position the bearing portion 1b and the guide arm 1d above the assumed position.

Then, the roll forming unit 3 on the base 2
A little toward the coupling device 1 to move the first clutch member 7
And the contact portion 1e of the guide arm 1d overlap each other. Next, the air cylinder 1c of the coupling device 1 is driven to lower the bearing portion 1b and the guide arm 1d until the contact portion 1e contacts the surface of the first clutch member 7.

When the contact portion 1e contacts the surface of the first clutch member 7, the roll forming unit 3 is connected to the connecting device 1
Move further in the direction. Then, while the tapered surface 6b of the drive shaft 6a slides on the surface of the tapered hole 7a of the first clutch member 7, the drive shaft 6a is pushed in the vertical direction so that the shaft center of the drive shaft 6a and the first clutch member 7 are aligned with each other. Be energized.

In this way, with the tapered surface 6b of the drive shaft 6a and the tapered hole 7a of the first clutch member 7 completely engaged, the first clutch member 7 and the second clutch member 8 are connected to each other. And the roll shaft 4 can be rotationally driven by the rotary drive device 5.

In this embodiment, the guide arm 1
In order to bring d into contact with the upper surface of the first clutch member 7, the bearing portion 1
Although it is arranged in b, of course, it is not limited to this, and it may be arranged so as to contact the lower surface of the first clutch member 7 from below.

[0022]

As described in detail above, according to the coupling device for a cold roll forming machine of the present invention, the roll shaft of the cold roll forming machine and the rotary drive device for rotating the roll shaft are connected via the universal joint. In a coupling device for a cold roll forming machine, in which a drive shaft extended to a clutch is engaged with the shaft center by a clutch, a bearing supporting the drive shaft and a base end portion of the bearing fixed to the tip end portion of the bearing. A guide arm having a length reaching the clutch of the roll shaft while being separated from the shaft center of the bearing by a distance corresponding to approximately the radius of the clutch of the roll shaft, and a guide arm for contacting the outer circumference of the clutch, Since a stand having a driving member for moving the bearing and the guide arm in the vertical direction is disposed between the cold roll forming machine and the rotary drive device, the stand of the cold roll forming machine having different axial centers is provided. When the clutch shaft and the drive shaft of the rotary drive device are engaged with each other, the bearing and the guide arm are moved up and down by the drive member, and the tip end portion of the guide arm is brought into contact with the clutch outer circumference of the roll shaft. The shaft center of the shaft is aligned with the shaft center of the roll shaft, and the clutch is easily engaged. Therefore, it requires a great deal of effort while suspending with a conventional crane or the like, and eliminates a long-time connecting work, and it is extremely easy and in a short time, the roll shaft of the cold roll forming machine and the drive shaft of the rotary drive device. Can be connected.

If the guide arm is provided with a drive member that allows the distal end portion of the guide arm to expand and contract in the roll axis direction of the cold roll forming machine, the clutch of the roll shaft and the clutch of the drive shaft are separated to some extent. The guide arm can be extended and brought into contact with the roll shaft clutch, and the guide arm can be reduced even when the roll shaft clutch and the drive shaft clutch come close to each other. It does not interfere with the clutch connection.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view of a coupling device for a cold roll forming machine according to the present invention.

FIG. 2 is an explanatory view of a connecting device for a cold roll forming machine of the present invention.

[Explanation of reference numerals] 1 coupling device 1a stand 1b bearing 1c air cylinder 1d guide arm 3 roll forming unit 4 roll shaft 5 rotary drive device 6 universal joint 6a drive shaft 6b taper surface 7 first clutch member 7b taper hole 8 second Clutch member

Claims (2)

[Claims] 1. A cold roll forming machine in which a roll shaft of a cold roll forming machine and a drive shaft extending from a rotary drive device for rotating the roll shaft via a universal joint are clutch-matched with their axial centers aligned. In the coupling device for a vehicle, a bearing that axially supports the drive shaft and a base end portion fixedly mounted on the bearing are separated from the shaft center of the bearing by a distance corresponding to a radius of a clutch of the roll shaft. The cold roll comprises a stand including a guide arm having a length of the roll shaft reaching the clutch and capable of contacting the outer circumference of the clutch, and a drive member for moving the bearing and the guide arm in the vertical direction with respect to the clutch. A connecting device for a cold roll forming machine, which is arranged between a forming machine and a rotary drive device. 2. The cold roll forming machine according to claim 1, wherein the guide arm is provided with a drive member that allows the tip end portion of the guide arm to expand and contract in the roll axial direction of the cold roll forming machine. Coupling device.