JPH057939A - Cold roll forming machine - Google Patents

Abstract

PURPOSE:To instantaneously execute the intermittence to a driving machine system by a coupling part of one part by connecting a roll forming stand and a speed reducer on a common sub-base through a universal joint and a counter shaft so that they Call be chance in a batch. CONSTITUTION:A coupling part is formed by a socket type connector in which on the vertical face of a coupling stand 10 provided vertically on a sub-base 1, an intermediate shaft 12 is inserted through the center part and its bearing is connected and supported, and a disk member 11 provided with plural guide holes 13 in the periphery is installed so as to be movable in a shaft of a plane 2 through a cross linear guide, and a plug type connector of a motor 21 side in which a shaft tube member 25 which can be inserted externally and can be engaged to the intermediate shaft is provided vertically in the center part and in its periphery, guide pins 26 fitted into plural guide holes are provided, and when a coupling head 24 connected to a motor shaft is opposed to the disk member, a hydraulic cylinder 27 is provided so as to be movable in the axial direction, and moreover, a coupling joint 8 is provided between the stand concerned and the speed reducer concerned.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a cold roll forming machine which transmits power between a roll drive shaft and a reducer via a universal joint, and a plurality of roll forming stands and a plurality of reducers are commonly used. It is mounted on the sub-base of the unit, unitized, and connected by a shaft to drive multiple speed reducers with a single motor. A coupling unit with an automatic alignment mechanism is provided between the shaft and the motor drive shaft. The present invention relates to a cold roll forming machine capable of instantly disconnecting a drive system when replacing each sub-base.

[0002]

2. Description of the Related Art Cold roll forming machines are often used for forming metal parts of various industrial products into various shapes, and usually, a material is supplied upstream of a forming line where a large number of roll stands can be installed. Incidental equipment, drilling on the downstream side,
The next process equipment such as cutting and bending is connected.

In order to form a plurality of different shapes on a single forming line, it takes a lot of time and labor to adjust the number of roll stages according to the shape and to replace with a dedicated forming roll and to adjust the roll axis. Was there. Therefore, there is proposed a so-called cassette type cold roll forming machine in which a plurality of roll stands are placed on the sub-base, the forming rolls are exchanged and adjusted in advance offline, and the sub-bases are exchanged.

However, since the multi-stage roll stands are arranged relatively close to each other, the roll shaft driving power mechanism or the power transmission mechanism needs to be arranged close to each other on the same plane as each stand, and each roll stand is connected. It was necessary to individually connect and disconnect each power transmission mechanism.

[0005] In order to make the cold roll forming machine using a gear meshing mechanism as a power transmission mechanism into a cassette exchange system, the applicant has made a so-called cross slide exchange of a unitized sub base, and the power transmission mechanism is a sub base. We proposed a configuration in which the gears are arranged so that they can be moved up and down, lowered at the time of replacement, and raised again after the replacement is completed to engage the gears. However, since it is a gear meshing mechanism, it has a relatively small-sized configuration, and is not suitable for applications in which the roll axis height of the roll stand is greatly changed.

If a jaw coupling is provided between each speed reducer and each roll shaft, they can be intermittently connected at once.
Since the axial position must be fixed, the vertical axis cannot be interrupted at the same time, and it can only be applied to a roll forming machine for relatively low speed rotation.

[0007]

Further, in the coupling method of the driving device, it is conceivable that a coupling is provided between each roll shaft and the universal joint on the speed reducer side so that connection or disconnection can be performed. By providing a universal joint, the roll axis height can be changed easily and it can withstand high-speed rotation, but an alignment mechanism is required between each roll axis and the universal joint, and each roll axis or roll stand is intermittently connected. There is a problem that it is not possible to intermittently collectively.

In a roll stand having a universal joint such as a pipe mill, in order to adjust the position of the roll shaft off-line, it is necessary to previously adjust the position of the coupling part of the universal joint according to the height of each roll shaft. However, it is practically quite difficult to insert a large number of roll shafts at the same time, and it is necessary to mount an adjustable device for each roll shaft in order to realize simultaneous coupling.

The present invention relates to a cold roll forming machine in which power is transmitted between a roll drive shaft and a speed reducer via a universal joint, and a cassette replacement system is provided without providing a coupling portion between each roll drive shaft and the speed reducer. The purpose of the present invention is to provide a configuration capable of instantly completing replacement of a group of roll stands and disconnection of a drive mechanical system.

[0010]

SUMMARY OF THE INVENTION According to the present invention, a plurality of roll forming stands and a plurality of speed reducers for transmitting power to a roll drive shaft of each stand via a universal joint are mounted on a common sub-base. The sub-base is made replaceable, and a plurality of speed reducers on the sub-base are connected in the molding line direction by one or more shafts and driven by one motor. Between the shafts and the motor drive shaft. The cold roll forming machine is characterized in that a coupling portion is provided on the connection portion to enable connection or disconnection.

Further, the present invention is the cold roll forming machine characterized in that, in the above-mentioned constitution, an automatic centering mechanism is provided in the coupling portion.

Further, according to the present invention, in the above structure, the bearing of the intermediate shaft is connected to and supported by the disk member having the intermediate shaft inserted through the central portion and a plurality of guide holes provided around the central shaft, and the disk member is sub-base-mounted. A socket type connector on the side of a sub-base, which is mounted on the stand of the coupling stand so as to be movable in two axes in a plane via a cross linear guide, and which clamps the disk member to the stand side. And a coupling head, which has a shaft tube that can be externally inserted and meshed with an intermediate shaft in the central portion thereof, is provided with a plurality of guide pins around the shaft tube, and is connected to a drive motor shaft, faces the disk member. The coupling part is composed of a motor-side plug-type connector provided with an actuator that is movable in the axial direction when the coupling joy is coupled between the stand and the reducer. A cold roll forming machine, characterized in that a bets.

[0013]

According to the present invention, in the structure in which the universal joint is provided between each roll shaft and the speed reducer side, it is necessary to provide the coupling portion for each universal joint. In view of the fact that it was not possible to connect and disconnect each roll shaft with the drive system at once, we focused on the configuration in which the input side of the speed reducer is coupled to the motor drive shaft. A reduction gear is used, and the input shaft is connected via a counter shaft to form a single unit. By using this, multiple roll forming stands and reduction gears can be used as a common sub-base. Completed the unitized configuration. Since multiple roll forming stands and speed reducers are mounted on a common sub-base, the sub-base becomes larger, but there is only one drive system coupling point, and the coupling time after replacing the sub-base is extremely short. It has the advantage of being time consuming.

In the present invention, between the input shaft of the worm reducer train and the motor drive shaft, a socket type coupling is mounted on a coupling stand fixed to the sub-base so as to be movable in two planes via a cross linear guide. The coupling part is composed of the child and the plug-type connector on the motor side, and even if the installation position slightly shifts when the sub-base is replaced, the automatic alignment connection with the motor drive shaft can be surely made. Further, the slight deviation can be absorbed by the coupling joint provided between the coupling stand and the speed reducer.

As the coupling joint provided between the coupling stand and the speed reducer, various structures such as a gear coupling as shown in the embodiments and a universal joint can be appropriately adopted.

[0016]

EXAMPLE A cold roll forming machine according to the present invention is a pipe mill. As shown in FIG. 1, a plurality of roll forming stands 2 and a speed reducer 3 are mounted on a sub base 1 which is detachably mounted on a forming line base. It is composed of a unit. The upper and lower roll shafts of the plurality of roll forming stands 2 are each connected to and driven by a speed reducer 3 via a universal joint 4. A worm speed reducer is used for each speed reducer 3, and each input shaft 6 is a counter shaft. 5, and one is connected in the molding line direction, and is connected to the electric motor 21 of the power source at the upstream end. The input side of the speed reducer 3 at the most upstream end on the sub-base 1 is connected to a shaft 7 having a required length via a gear coupling 8 and an intermediate shaft 12 pivotally supported by a coupling stand 10. There is.

The coupling stand 10 side erected on the sub-base 1 and the motor 21 side mounted on the motor base 20 fixed to the molding line base constitute a coupling section. On the vertical surface of the coupling stand 10, a disk member 11 having a plurality of guide holes 13 arranged around the disk stand 11 is mounted via a cross linear guide so as to be movable in two axial planes. More specifically, the cross linear guide is provided on the surface of the disk member 11 on the side opposite to the guide hole 13 and the groove member 1
4 is arranged to fit with a rail 16 arranged on another plate 15, and a dovetail groove member 17 is arranged on the back surface of the plate 15 to form a rail 18 on the vertical side of the coupling stand 10. It is configured by fitting, and the disk member 11 is movable in two axes in a plane. An intermediate shaft 12 is inserted through the center of the disk member 11,
2 bearings are connected and supported, and the intermediate shaft 12 is a reduction gear 3
It is possible to move the two axes in the plane by the permissible range of the gear couplings 8, 8 interposed on the input side of. Further, the coupling stand 10 is provided with a plurality of clamp devices 19 for sandwiching and fixing the disc member 11.

On the other hand, a motor 21 is provided on the motor base 20 side.
The drive shaft and the bearing portion 23 of the coupling head 24 are connected by a joint 22. The coupling head 24 is
A shaft tube member 25, which is spline-engaged with a transmission shaft rotatably supported by a bearing portion 23, is arranged in the center thereof, and a plurality of guide pins 26 are arranged around the shaft pipe member 25. The mounted hydraulic cylinder 27 is movable in the axial direction, the shaft tube member 25 can be externally inserted and meshed with the intermediate shaft 12 on the disk member 11 side, and the guide pin 26 can be fitted in the guide hole 13. is there.

A socket type connector on the side of the sub-base 1, a shaft tube member 25 that can be externally inserted and meshed with the intermediate shaft 12 at the center, and a plurality of guide pins 26 are provided around the shaft pipe member 25 for driving. Coupling head 24 connected to the motor shaft
However, a coupling portion is formed with a plug-type connector on the side of the motor 21, which has a configuration in which a hydraulic cylinder 27 is provided so as to be movable in the axial direction when facing the disc member 11.
Further, a coupling joint 8 is provided between the stand 10 and the speed reducer 3. The hydraulic cylinder 27 of the coupling head 24 contracts, moves toward the motor 21, and is in a standby state.

The operation of the cold roll forming machine having the above-described structure will be described. First, the required sub-base 1 on which the roll change and the adjustment of the roll shaft height have been completed is moved and exchanged, and a predetermined forming line base is provided. The coupling stand 10 of the sub-base 1 and the coupling head 24 are opposed to each other by fixing the position with a clamp device (not shown). Next, when the hydraulic cylinder 27 is extended and the coupling head 24 is moved, the guide pin 26 starts to be fitted into the guide hole 13 and a guide is provided according to a slight displacement of the sub base 1 replaced by the cross linear guide. When the hole 13 is moved, that is, the disk member 11 is automatically aligned, the shaft tube 25 is externally inserted and meshed with the intermediate shaft 12. Further, the disc member 11 is clamped and fixed by the clamp device 19 to complete the coupling.

To release the coupling, the hydraulic cylinder 27 is contracted to move the coupling head 24.
Is moved to the motor 21 side, the shaft tube 25 and the guide pin 26 are separated from the intermediate shaft 12 and the guide hole 13, and the coupling is released.

[0022]

In the cold roll forming machine according to the present invention, the speed reducer for transmitting the power to the roll drive shaft through the universal joint and the roll forming stand are mounted on a common sub base to be unitized and each sub base is mounted. It is replaceable, each worm reducer is connected via the counter shaft to form one, and the coupling stand on the sub-base side and the coupling head connected to the drive motor shaft,
By forming one coupling part, the coupling time can be completed in a very short time and in a few seconds, automation becomes easy, and there is almost no eccentricity of the shaft connected by the self-aligning device, high speed and high torque. Can be transmitted. Further, since the universal joint on the sub-base and the roll shaft are still connected, they can be used in a good connection relationship with almost no backlash, and there is an advantage that there is little vibration and the life is long. Furthermore, the universal joint between the roll forming stand and the speed reducer does not require any coupling, the roll axis height can be adjusted freely and offline presetting is possible, and the intermediate rest device, position adjustment device, etc. No additional device is required, the configuration is simple and the frequency of maintenance is reduced.

[Brief description of drawings]

FIG. 1 is an explanatory top view showing a configuration of a cold roll forming machine according to the present invention.

FIG. 2 is a front view showing the structure of a cold roll forming machine according to the present invention.

FIG. 3 is a front view showing the structure of the coupling portion of the cold roll forming machine according to the present invention.

[Explanation of symbols]

1 sub-base 2-roll forming stand 3 reducer 4 Universal joint 5 counter shaft 6 input shaft 7 shaft 8 gear coupling 10 Coupling stand 11 Disc member 12 Intermediate shaft 13 Guide hole 14, 17 Yes Groove member 15 plates 16,18 rails 19 Clamp device 20 motor base 21 motor 22 Joint 23 Bearing 24 coupling head 25 shaft tube member 26 Guide pin 27 hydraulic cylinder

Claims (3)

[Claims] 1. A plurality of roll forming stands and a plurality of reduction gears for transmitting power to a roll drive shaft of each stand via a universal joint are mounted on a common sub-base to be unitized so that each sub-base can be replaced. , A configuration in which a plurality of speed reducers on the sub-base are connected in the molding line direction by one or a plurality of shafts and driven by one motor, and a coupling portion is provided between the shafts and the motor drive shaft for connection. Alternatively, a cold roll forming machine characterized by being detachable. 2. The cold roll forming machine according to claim 1, wherein the coupling section is provided with an automatic centering mechanism. 3. A standing member of a coupling stand, wherein a bearing of the intermediate shaft is connected to and supported by a disk member having an intermediate shaft inserted through the center thereof and a plurality of guide holes provided around the intermediate member. A sub-base-side socket-type connector, which is mounted on the stand side, is provided with a clamp device that is mounted on a surface so as to be movable in two axial planes via a cross linear guide and that is fixed to the disk member. The coupling head, which is provided with a shaft tube that can be inserted and meshed, has a plurality of guide pins arranged around it, and is connected to the drive motor shaft, moves axially when facing the disk member. 3. A coupling section is constituted by a motor-side plug type connector which is provided with an actuator as possible, and a coupling joint is further provided between the stand and the speed reducer. Cold roll forming machine described.