WO1995009060A1

WO1995009060A1 - Drive shaft connecting device for cold roll forming machine

Info

Publication number: WO1995009060A1
Application number: PCT/JP1994/000899
Authority: WO
Inventors: Shoichi Matsumoto
Original assignee: Nakata Manufacturing Co., Ltd
Priority date: 1993-09-27
Filing date: 1994-06-03
Publication date: 1995-04-06
Also published as: JP3362072B2; AU6856494A; CN1131920A; JPH0796329A; EP0721814A4; EP0721814A1; KR960704654A

Abstract

The invention has its object to provide a drive shaft connecting device for a cold roll forming machine, which is constructed to enable sliding of an intermediate stand on a common base to complete connection of the same to a roll shaft with a single action simultaneously performing required positional changes in accordance with regulation of pressing-down forces of roll stands. Couplings (21, 22) connected to a drive system via expansion type universal joints are mounted on coupling holders (14, 15) mounted to vertically slidable linear guides in a manner to be minutely movable in horizontal and vertical directions, and an intermediate stand (10) supporting these parts is slid on the common base (1) to permit the coupling holders (14, 15) as lifted to descend to be stopped by automatic centering guides (14d, 15d), thereby allowing the couplings (21, 22) to face ends of roll shafts (31, 32) whereby it is possible to complete connection of the couplings to roll shafts with a single action while automatically effecting heightwise regulation without reading and adjusting levels of the couplings, and to freely regulate rolling forces during a forming operation since the couplings are kept vertically free.

Description

Specification

Drive shaft connecting device for cold-opening molding machine

The present invention relates to an improvement of a drive shaft connecting device in a cold roll forming machine, and relates to a force coupling holder mounted on a linear guide capable of vertically sliding a coupling connected to a drive system and a telescopic universal joint. The power stand is mounted so that it can be finely moved in the horizontal and vertical directions, and the intermediate stand that holds them is slid on the common base, while the force spring holder is lowered so that the force spring is opposed to the end of the roll shaft. The connection with the shaft can be completed at one time, and the cutting is free in the vertical direction, so that the rolling force can be adjusted freely during molding work regardless of the change in the distance between the upper and lower ports and the shaft. The present invention relates to a drive shaft connecting device for a cold opening molding machine comprising: Background art

2. Description of the Related Art Cold roll forming machines (hereinafter referred to as roll forming machines) are widely used for forming metal members of various industrial products into various shapes. An auxiliary facility for material supply is connected to the upstream side of the molding line where a stand is installed, and downstream processing equipment such as drilling, cutting and bending is connected to the downstream side.

In order to form a plurality of different shapes with this one molding line, it is necessary to change the number of roll stages according to the shape and change to a special forming roll, and further adjust the vertical axis of the upper and lower rolls to adjust the rolling force. Time and effort.

Therefore, a plurality of roll stands are mounted on a sub-base that is configured to be detachable from the common base, and the forming roll replacement and the adjustment are completed in advance with an off-line. Anyway, a so-called cassette type cold roll forming machine that replaces the entire sub-base and connects to the drive source attached to the common base has been put to practical use.

Furthermore, in order to save labor, a plurality of the above-mentioned sub-bases are prepared, dedicated forming rolls are arranged for each shape to be molded, and the sub-bases are exchanged according to demand. I have.

The so-called cassette type roll forming machine that replaces the sub-base is a force that aims to save labor by completing forming roll replacement and adjustment in advance off-line. ⁵ ', There is a problem that the sub-base replacement time is determined by the connection method and connection mechanism between the tail drive system provided on the common base side and the roll axis of the roll stand on the sub-base side.

Conventionally, when a roll stand is driven by a motor, a universal joint for connecting the common base reducer connected to the motor and the upper and lower roll shafts on the sub base side is connected to the common base side. It is necessary to connect the roll shaft to the universal joint by the number of roll stands x the number of vertical roll shafts, which requires a great deal of labor and time. Therefore, an intermediate stand is provided on the common base side to support the force ring provided at the end of the universal joint, and the sub base is slid on the common base to complete the connection with the roll shaft at once. A mechanism has been proposed, but especially when the distance between the upper and lower roll axes is changed when changing the forming rolls, the connection can be completed in one time unless the coupling position of the intermediate stand is accurately adjusted according to the change. It was extremely difficult to complete the connection at once, especially when the number of mouth stands placed on the sub-base increased.

Furthermore, the rolling force may be adjusted even after the operation of the line has started, and the force spring core always changes with the height change of the roll shaft even if slight height fluctuation occurs. There is a need. Therefore, the intermediate stand and the coupling are designed to be free from at least the height position after the connection, so that the required position can be changed at the same time according to the adjustment of the rolling force of the car or the mouth stand. It is desirable. Disclosure of the invention

The present invention solves the above-described problem in connection between the drive system provided on the common base side and the roll shaft of the roll base on the sub-base side, regardless of the change in the distance between the upper and lower roll shafts, and Even if the sub-base has a plurality of roll stands, the intermediate stand can be slid on the common base to complete the connection with the roll axis at one time, and An object of the present invention is to provide a drive shaft coupling device for a cold port-rule component having a structure capable of simultaneously performing a necessary position change in accordance with the adjustment of a rolling force of a portal.

The inventor of the present invention has a mechanism capable of automatically connecting the drive shaft while adjusting the height without performing reading and adjustment of the rubbing height. As a result of various studies with the aim of a mechanism that allows freedom in the height position of the spring and the intermediate screw, and that allows free adjustment of the draft during the molding operation, the drive system and the telescopic universal joint were used. The power stand connected to the power guide holder is mounted on a linear guide that can slide in the vertical direction.It is mounted on the power holder in such a way that it can be finely moved in the horizontal and vertical directions, and the intermediate stand that holds these is slided on the common base. Lower the coupling holder while pulling it up, stop it with the guide for self-centering, and make the force ring oppose the shaft end of the coupling. It is possible to complete the connection with the roll axis at one time while automatically adjusting the height without having to read and adjust the height. We have invented a mechanism that allows free adjustment of the rolling force during molding regardless of the change in the distance between the shafts. That is, the present invention

In the drive shaft connecting device of the cold roll molding machine that connects the drive system provided on the common base side and the roll shaft of the roll stand on the sub base side, the expansion joint of the telescopic universal joint connected to the drive system An intermediate stand that supports the force ring attached to the other end is placed on the common base so that it can move horizontally in the roll axis direction.

A power spring with an axial spline groove formed on the inner peripheral surface and a detachable guide with a spline groove formed at the force spring inlet is bufferably supported so that it can be moved horizontally and / or vertically in the force spring holder. And

Attach a linear guide that can slide the power holder in the vertical direction so that it can be moved up and down with the cylinder device.

A guide provided in the force pulling holder to raise the force pulling holder in the vertical direction, move it horizontally to the vicinity of the roll shaft end, which has become the spline shaft, and approach and lower the force pulling roll when it is lowered. The dowel is positioned so as to contact the guide stopper provided on the side of the mouth stand, and the coupling and the mouth shaft can be spline-fitted. It is a drive shaft connecting device. Description of the drawings

FIG. 1 is an explanatory view of a drive shaft coupling device according to the present invention as viewed in a molding line direction.

FIG. 2 is an explanatory diagram of the intermediate stand of the drive shaft coupling device according to the present invention as viewed from the roll axis direction.

FIG. 3 is an explanatory diagram showing a fitting state between the force ring and the roll shaft.

FIG. 4 is an explanatory view showing the relationship between the vertical roll shaft center height and the vertical force spring center height in the drive shaft connecting device according to the present invention. BEST MODE FOR CARRYING OUT THE INVENTION

The operation of the drive shaft connecting device of the cold roll forming machine according to the present invention will be described in detail with reference to the drawings.

Here, a common bed 2 is placed on a common base 1, and a sub-base 4 on which a roll stand 3 is mounted is detachably mounted thereon, and is adjacent to the sub-base 4. A slide base 5 fitted and mounted on a rail laid in the roll axis direction of the mouth screw 3 is slidably disposed, and the slide base 5 is provided with a cold base according to the present invention. The intermediate stand 10 which is a feature of the drive shaft connecting device of the roll forming machine is mounted. Further, a worm 6 is arranged adjacent to the common bed 2 and a worm 6 is arranged.

The slide base 5 is slidably moved in the horizontal direction by traverse cylinders 8 and 8 arranged on the bet 6 of the ohmic reducer 7.

The intermediate stand 10 is composed of a pair of support panels 11, 11 erected as shown in FIG. 2, and a vertical surface 12 consisting of a rectangular frame is formed on the roll stand 3 side, with the central opening of the vertical surface 12 interposed therebetween. The slide rails 13 and 13 are arranged vertically, and linear guides are attached to the slide rails 13 and 13 so that the force coupling holders 14 and 15 can be raised and lowered in the vertical direction.

A pair of wings are provided at the upper ends of the force spring holders 14 and 15, respectively.

14a, 14b, 15a, 15b are provided in the horizontal direction in parallel with the vertical surface 12, and a pair of lifting ports 17, which can be raised and lowered by an air cylinder 16 mounted on the upper end of the intermediate stand 10, 17 is loosely inserted into the through holes provided in the wings 14a, 14b, 15a, 15b, and the metal fittings 18, 18, which are fixed to the lifting rods 17, 17 when the lifting rods 17, 17 are raised, are connected to the wings 14a, 14a. 14b, 15a, and 15b come into contact with the lower ends and are simultaneously lifted. The couplings 21 and 22 are accommodated in the openings of the force spring holders 14 and 15 so that they can be finely moved in the horizontal and vertical directions, respectively. Has a predetermined gap.

The force rings 21 and 22 are composed of main bodies 21a and 22a rotatably supported by bearings on spline bearings 21b and 22b composed of female-type integral splines. A pair of plate-like guide pieces 21c, 22c each having a spline groove formed in the opening diameter are horizontally opposed to each other.

The shaft end on the side of the intermediate sleeve 10 between the shafts 31 and 32 of the roll stand 3 is a male spline shaft, and a short cylindrical spline guide with a spline groove formed on the outer peripheral surface at the end. The guide pieces 21c and 22c and at least one of the spline grooves of the spline guide are formed by sharpening the fitting side into a blade shape. When the ridges of the spline grooves are brought into contact with each other, the force couplings 21 and 22 are configured to rotate and fit.

The other ends of the power ring main bodies 21a and 22a are connected to the output shaft of the ohmic reducer 7 by a telescopic universal joint (not shown).

The pair of wings 14a, 14b, 15a and 15b of the coupling holders 14 and 15 are provided with the centering guides 14c, 14d, 15c and 15d projecting in the direction of the roll shafts 31 and 32. On the other hand, the height of the roll stand 3 is set in advance to a predetermined value on the spline shaft side of the spline shaft, and a pair of guide stoppers to which the guides 14c, 14d, 15c, and 15d can abut. One 33, 34 are provided.

In the above configuration, as shown in FIG. 1, when the intermediate stand 10 is located on the worm reduction gear 7 side, the start position is reached. At this time, the lifting rods 17 and 17 are raised and the power spring holder 14 is moved up. , 15 and the force springs 21, 22 are raised to the upper limit position. When the sub-base 4 on which the mouth stand 3 is mounted is mounted on the common base 2, the slide base 5 is advanced and the guides 14c, 14d,

Stop at the position where 15c and 15d intersect with the guide stoppers 33 and 34 of the roll stand 3 (illustrated by imaginary lines).

When the lifting force of the air cylinder 16 is released and the upper and lower force pulling holders 14 and 15 are lowered, the guides 14c, 14d, 15c and 15d come into contact with the guide stoppers 33 and 34 of the roll stand 3. Stop. At this time, when the intermediate stand 10 is advanced to the final position, the couplings 21, 22 and the roll shafts 31, 32 are guided by the guide pieces 21c, 22c, and the splines are completed while slightly rotating. I do.

At this time, since the couplings 21 and 22 are loosely connected to the force coupling holders 14 and 15 in the horizontal and vertical directions, the roll shafts 31 and 32 and the couplings 21 and 22 slightly disagree. It can be fitted even if it is attached, and the lifting pads 17 and 17 are already in contact with the brackets 18 and 18 and there is no restriction in the vertical direction, but the couplings 21 and 22 have a force coupling holder in the axial direction. , 15 are restrained by slide rails 13, 13 via linear guides, so that such engagement is not released during operation.

In order to release the force springs 21, 22, the intermediate stand 10 is retracted to the above-mentioned start position, the spline shaft is released, and the lifting rods # 7, 17 are raised. By raising the force spring to the upper limit position, the preparation for restart is completed.

Example

The above-described drive shaft coupling device shown in FIGS. 1, 2, and 3 basically has a coupling 21 and 22 cores in the adjustable range of the portal shafts 31 and 32 with respect to the pre-set portal shafts 31 and 32. The lifting device is lifted up and down to the specified upper limit, and the cutting device is adjusted so that the height of the vertical force rings 21 and 22 is determined by the contact of the guide for centering. Lower the lifting ports 17 and 17 until they reach the full height of the air cylinder cylinder 16 and the force couplings 21 and 22 are stopped at that height. It can be inserted, and slides the intermediate slide 10 to the final position to complete the spline connection.

Therefore, in this device, it is important that the 31 and 32 cores of the shaft and the 21 and 22 cores of the coupling are automatically aligned by mechanical operation. It is necessary to find a condition that can set the center height of the lower cutting ring 22 so that it does not exceed the upper limit even when the upper and lower roll shafts 31 and 32 are pulled up to the upper limit as much as possible by providing a play at the lower limit of 17 and 17.

Generally, the adjustment range of the upper roll is often larger than the adjustment range of the lower roll. Therefore, if the upper axial force coupling is pulled up to the required limit with a certain stroke, the height of the lower shaft coupling rises more than necessary and there is a risk of interference. Therefore, interference can be prevented by determining the condition for setting the play K from the given condition. Therefore, the cutting device can be lifted with a constant stroke S, and the lower and upper opening shafts 31, 32 cores and the vertical force couplings 21, 22 cores can be independently adjusted during the lowering operation.

This condition can be set by using the following conditional expression. As shown in Fig. 4, the condition on the roll axis side is

The height of the reference plane of the upper roll shaft up Ai, a minimum A _2, also the height of the reference plane of the lower opening Ichiru shaft 32 maximum, and minimum B _2,

Minimum center distance Cmh ^ As-B ^

Maximum shaft distance Cmax Ai—Ba a + b + c

a = Ai— A2

b = Bi -B ₂

,is there

The conditions on the force spring side are: Maximum reference plane by Rino height above couplings Xl, the minimum x _2, also a reference plane by Rino level below cutlet pre ing up Yi, minimum Y ₂ and. Then,

Minimum force split distance Z _min = X ₂ — Yi,

Maximum force ring distance Zmax-Xi -Ys Cmax + a + Z ^

Te> ru o

The setting of the stroke S of the air cylinder 16 is "= β = β,

When a> b, S = a + na + /?

When a <b, S, = b + hi, +

It is.

The setting of the distance between the lifting brackets 18 and 18 in the lifting rods 17 and 17 is as follows. When a> b, the play K between the lower lifting bracket 18 and the lower coupling 22 is given by

K = S- «-b

It is.

Lifting rods 17 and 17 with force couplings 21 and 22 lowered force coupling between 21 and 22 g

ΐ ⁼ S + ^ min

It is.

The distance L between the guide stopper contact surfaces is ¾, the distance between the upper coupling 21 and the upper guide stopper contact surface, and ¾ is the distance between the lower force coupling 22 and the lower guide stopper-contact surface. Then

L = F + (5i -¾

It is. Industrial applicability

The drive shaft connecting device of the cold roll forming machine according to the present invention is provided so that a force ring connected to a drive system and a telescopic universal joint can be horizontally mounted on a coupling holder mounted on a linear guide capable of sliding vertically. , Which are mounted so that they can be finely moved in the vertical direction, and slide the intermediate stand that holds them on the common base, while lowering the force spring holder so that the force spring faces the roll shaft end. In other words, the cutting position of the intermediate stand is automatically guided irrespective of the bristle position of the mouth axis position in the off-line, so that so-called one-touch coupling is possible, and there is no loss time.

The force-plunging position is mechanically determined by the up and down movement of a fixed stroke of the air cylinder without any prior adjustment.Therefore, there is no problem such as misreading.Adjust the rolling force during operation. Is possible.

In addition, a simple guide stopper is simply provided on the roll stand side, the weight increase is extremely small, and the position adjustment of the upper and lower roll shafts can be freely preset within a certain range.

Claims

The scope of the claims

1. In the drive shaft connecting device of the cold roll forming machine that connects the drive system provided on the common base side and the roll shaft of the roll base on the sub-base side, a telescopic universal joy connected to the drive system An intermediate stand that supports the force spring attached to the other end of the unit is placed on the common base so that it can move horizontally in the roll axis direction, an axial spline groove is formed on the inner peripheral surface, and a spline groove is formed at the inlet of the force spring. A force guide in which a guide formed with a groove is detachably arranged is buffered and supported on the force holder in such a way that it can be moved in the horizontal and / or vertical direction, and a linear guide that can slide the holder in the vertical direction is installed. To make it possible to move up and down with the cylinder device.Then, pull up the cutting holder vertically and move it horizontally to the vicinity of the end of the roll shaft that has become the spline shaft. The guide bar provided on the force pulling holder is positioned so that the force ring faces the end of the roll shaft when it is brought down and lowered. And a drive shaft connecting device for a cold opening molding machine, wherein the coupling and the roll shaft can be spline-fitted.

2. The cold port according to claim 1, which is set under the following conditions so that the center height of the lower coupling does not exceed the upper limit when a play K is provided at the lower limit of the lifting rod and pulled up to the upper limit of the upper and lower roll shafts. —The drive shaft connecting device of the molding machine.

The height of the reference plane of the upper roll shaft and a maximum minimum A2, maximum Bi, minimum B ₂ the criteria surface by Rino height lower roll shaft, the maximum height of the reference plane of the upper couplings Xi, the minimum X _2, and the reference plane by Rino level below couplings up Yi, the minimum Y _2,

As a condition on the roll axis side,

Minimum center distance Cmin Az— B ^

Maximum center distance Cm ^^ Ai— B ₂ = a + b + c, a = Ai-A2

b = Bi-B ₂

As a condition on the power spring side,

Minimum force coupling distance Z _min = X2— Υι,

Maximum coupling distance Z _max = Xi-Y ₂ = Cmax + α + β '

And set the stroke S of the air cylinder to "=, β = β, e, and when a> b, S = a + a + /?

When a <b, S, = b + a + / 3,

The setting of the distance between the lifting brackets on the lifting rod is

For a> b, the play K between the lower lifting bracket and the lower coupling is α = α, and K = S-b

Also, the distance F between the couplings with the power coupling lowered at the lifting port is

1 = S + _min

In addition, the distance L between the guide stopper contact surfaces is defined as Si, the distance between the upper coupling and the upper guide stopper contact surface, and the distance between the lower force spring and the lower guide stopper contact surface,.

L = F + 5i-¾

Set.