JPH0227925Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to an integrated roller straightening device for an endless steel belt, and more specifically to a metal laminated layer used in a continuously variable transmission for power transmission. This article relates to improving the interlayer difference accuracy and adjusting the circumference of endless belts (hereinafter referred to as steel belts).

(Prior art) For example, a steel belt with a thickness of 0.1 to 0.3 mm and a width of 10
~20mm and 400-800mm long hoops can be stacked in 10-20 layers.

At this time, the circumference accuracy of each hoop is ±0.020 of the circumference.
Extremely high precision quality, such as mm, is required.

Conventionally, apparatuses for manufacturing or straightening belts of this type are known as described in Japanese Patent Application Laid-Open No. 163750/1982 and Japanese Patent Application No. 191321/1983.

For the former (Japanese Patent Application Laid-Open No. 57-163750),
"A plurality of metallic endless belts manufactured with a circumferential length difference of approximately 2πt (t: thickness of the endless belt) are stacked in a multiple ring shape, and the core of the multiple rings has a coefficient of thermal expansion from the multiple rings. A large metal core material is inserted, and the whole is heated in this state to thermally expand the whole, and the multiple rings are transformed into a core material by causing a phase change such as transformation or precipitation. The dimensions of the multiple rings were corrected simultaneously for each layer by plastic deformation along the ring, and then the entire ring was cooled and the core metal material was extracted.

Regarding the latter (Japanese Patent Application No. 57-191321), "a plurality of metallic endless belts manufactured with a difference in circumferential length of approximately 2πt (t: thickness of the endless belt) are superimposed in a multiple ring shape. After the metal cylinder is fitted onto the outer periphery of the metal cylinder, internal pressure is applied to the inner surface of the metal cylinder to uniformly expand it in the radial direction, so that the endless belts adjacent to the metal endless belt are in close contact with each other. It imparted a permanent deformation of .

(Problem to be solved by the invention) Regarding the former of the above-mentioned conventional techniques, there is a problem when an extremely high level of precision is required, for example, an interlayer difference precision of +0.02 to -0.02 mm. It was hot.

In other words, the difference in coefficient of thermal expansion between stainless steel, which is the core material, and maraging steel, which is the belt material, is not always constant, and the coefficient of thermal expansion of maraging steel itself changes above and below its transformation point. For this reason, high precision machining was impossible.

In the latter case, since the elastic deformation of the core metal is used, the tube expansion rate (peripheral elongation rate) cannot be made large; in reality, it is around 0.3%, and sufficient correction must be carried out. I couldn't do it.

Therefore, for example, in order to obtain a deformation amount of 1%, approximately three core metals are required in order of increasing size, and the number of steps increases accordingly. Additionally, the durability of the core metal was a problem.

(Means for solving the problem) The present invention attempts to solve the problems of the conventional method by wrapping a multi-layered endless steel belt around the driving roller and the driven roller and straightening them as one unit. Therefore, the present invention is provided with a driving roller and a driven roller around which a multi-layered endless steel belt is wound, and a driving mechanism for adjusting the distance between roller axes to increase or decrease the distance between the layers of the belt. and the circumferential length adjustment is corrected, and is provided with bearing means for rotatably supporting each of the drive roller and the driven roller, and one of each bearing means is capable of being freely inserted and removed in the axial direction of the roller. The driven roller side is attached to a pedestal that is movable in the circumferential direction of the roller axis, and a drive mechanism using a hydraulic cylinder is provided to allow the pedestal to be fixed reciprocally in the direction between the roller axes. A measuring head for a length measuring meter is provided, and the measuring head for the length measuring meter is slidably fitted onto a scale provided along the moving direction of the pedestal, and is brought into contact with the pedestal so as to extend in the steel belt expansion direction. An endless steel belt comprising a tunable slider, a control valve for controlling the drive mechanism, and a slider of a measuring head for a length measuring meter and a length measuring meter interlockingly connected. An integrated roller straightening device is provided.

(Function) A multi-layered steel belt is wrapped around the driving roller and the driven roller, and while the belt is circulated through the driving roller, the frame on which the driven roller is attached is separated by a driving mechanism equipped with a hydraulic cylinder. The belt is moved in such a manner that a tensile force is applied to the belt, and its circumference is expanded.

The circumferential length of the expanding steel belt is detected by a length measuring probe that is synchronized with the movement of the frame, and is counted by the length measuring meter.

At the same time, when the count value reaches a predetermined circumferential length value, the operation of the hydraulic cylinder is stopped.

(Example) An example of the present invention will be described in detail with reference to FIGS. 1 and 2.

A driving roller 11 and a driven roller 12 are placed on the surface plate 10.
are provided with a distance between the roller axes.

The driving roller 11 and the driven roller 12 are both in the shape of a cylindrical or flat roller,
They are attached to roller shafts 13 and 14, respectively.

The drive roller shaft 11 is mounted on a fixed bearing box 1 on the surface plate 10.
5 and a removable bearing box 16 via roller bearings 17, and the removable bearing box 16 can be freely inserted and removed in the axial direction of the roller. A drive motor 19 with a variable motor is attached to the end of the roller shaft on the bearing box 15 side.

A pair of slide rails 20 are formed on the surface plate 10 on the driven roller 12 side in a direction perpendicular to the roller axis, and a pedestal 21 is slidably mounted on the slide rails 20.

One end of the driven roller shaft 14 is supported via a roller bearing 23 in a bearing box 22 fixed to a pedestal 21, and the other end is supported by a conical bearing box 24 in a removable type that can be inserted into and removed from the pedestal 21 in the roller axial direction. The driven roller 12 is supported via a shaped bearing box 25 and a roller bearing 26, and the driven roller 12 is supported on both sides on the frame 21.

That is, the drive roller 11 and the driven roller 12 are supported by bearing means 28 and 29, and one of the bearing means 28 and 29 can be freely inserted into and removed from the roller axial direction.

The driving roller 11 and the driven roller 12 are on the same plane, and a multi-layer body of an endless steel belt 30 can be freely wound and removed between the rollers 11 and 12.

The pedestal 21 is capable of reciprocating along the slide rail 20 in a direction perpendicular to the roller axis direction, and the pedestal 21 is equipped with a double-action telescopic hydraulic cylinder 3.
The distance between roller axes can be freely adjusted in size by a driving means 32 composed of 1.

That is, the piston rod end of the cylinder 31 is fixed to the frame 21, and the cylinder 31 is attached to the surface plate 10 via a bracket 32'.

The oil sent from the hydraulic pump 33 is supplied to each oil chamber of the hydraulic cylinder 31 via the oil passage 3 through switching of the control valve 34, which is exemplified by a 4-port electromagnetic valve in this example.
The liquid can be sent and discharged through the pipes 5 and 36.

Solenoids 34A and 34B of the control valve 34 are connected to a power source 37 via a drive switch 38 and a relay 39 having terminals 38A and 38B.

A length measuring probe 40 is provided on one side of the pedestal 21, and the measuring probe 40 includes a scale 42 having a stopper 41, a slider 43 that is slidable on the scale 42, and a tensile force of the slider 43. It consists of a spring 44, etc., and the slider 43 is attached to the frame 21.
The spring 4 is brought into contact with the base 21 and
It is said that it is possible to move against 4.

The slider 43 has an electronic micro-type length measuring meter 45.
The length measuring meter 45 has a switch 46 for setting an upper limit value and a switch 4 for setting a slow speed value.
7. A display meter 48, a slow speed switch 47A, and an upper limit switch 46A are provided, and the switches 46A, 47
A is connected to the relay 39, and further connected to a solenoid 48A of a control valve 48, which is a two-port electromagnetic valve provided on the oil path 35 side. In addition, 49
indicates a relief valve.

Next, the operation of the illustrated example will be explained.

When the solenoid 34B of the control valve 34 is applied, hydraulic pressure from the pump 33 is sent to the cylinder 31 in the extending direction via the oil passage 36, while the bearing means 2 of each of the driving roller 11 and the driven roller 12
Since one of the belts 8 and 29 is removable in the direction of arrow A, it is removed and the multi-layered steel belt 30 is wound around the rollers 11 and 12, and the bearing means 2 is reattached.
The rollers 11 and 12 are supported on both sides via 8 and 29.

At this time, the slider 43 of the length measuring stylus 40
is pulled by a spring 44 and is brought into contact with the pedestal 21 and stopped.

The final value for expanding and correcting the steel belt 30, that is, the required circumferential length value is set in the upper limit setting switch 46 of the length measuring meter 45.

Also, set the display meter 48 and internal counting circuit to "0" using the reset switch.

Next, when the terminal 38A side of the drive switch 38 is brought into contact and the solenoid 34A of the control valve 34 is energized, hydraulic pressure in the direction of contraction is applied to the hydraulic cylinder 31, and the driven roller 12 is moved in the direction of arrow B via the mount 21. be done.

At this time, the slider 43 of the measuring head 40 is
1 for synchronized operation, the parallel movement distance of the driven roller 12 is detected, this is counted by the length measuring meter 45, and is displayed on the display meter 48.

When the motor 19 is set to a predetermined rotational speed and driven, and the oil pressure in the contraction direction continues to be applied to the hydraulic cylinder 31, the circumferential length of the steel belt 30 is expanded.

Further, the circumferential length of the steel belt 30 is expanded, and the value displayed on the display meter 48 is changed to the upper limit setting switch 4.
When the set value of 6 is reached, the upper limit switch 46A is opened, and when the relay 39 is turned off, the solenoid 34A of the control valve 34 is demagnetized, the valve 34 is in the neutral position, and the hydraulic cylinder 31 is stopped. Become.

Therefore, when the circumferential length of the steel belt 30 is expanded to the required circumferential length value set in the upper limit value setting switch 46, it is automatically stopped with high precision and the circumferential length is increased from 10 to 20.
One set of steel belts stacked in multiple layers 3
Interlayer difference accuracy of 0 and circumferential length adjustment are achieved all at once.

Further, by wrapping two or more multilayered steel belts 30 around the drive roller 11 and the driven roller 12 in parallel, further improvement in productivity can be expected.

(Effects of the invention) According to the invention, since it is possible to straighten the driving roller and the driven roller at once by wrapping a multi-layered steel belt around the driving roller and the driven roller, the working time is greatly shortened. , it is possible to reliably improve the interlayer difference accuracy.

In addition, the driven roller is attached to a pedestal, and a hydraulic cylinder is used as a driving means for the pedestal, and the pedestal and the slider for the length meter are brought into contact and synchronized, so that it does not interact with the length meter, control valve, etc. Automatic operation is possible.

[Brief explanation of the drawing]

FIG. 1 is a planar overall configuration diagram showing an embodiment of the present invention, and FIG. 2 is a view taken along the line CC in FIG. 1. 11... Drive roller, 12... Followed roller, 2
1... Frame, 28, 29... Bearing means, 31...
Hydraulic cylinder, 32... Drive mechanism, 34... Control valve, 40... Gauge head, 42... Scale, 43...
...Slider, 45...Length measuring meter.

Claims (1)

[Claims for Utility Model Registration] A driving roller and a driven roller are provided, around which a multilayer body of an endless steel belt is wound, and a drive mechanism is provided for adjusting the distance between roller axes to increase or decrease the distance between the layers of the belt. The peripheral length adjustment is corrected, and bearing means 28 and 29 are provided to rotatably support the driving roller 11 and the driven roller 12 on both sides, and one of the bearing means 28 and 29 is attached to the roller. The driven roller 12 side is attached to a pedestal 21 that is movable in the circumferential direction of the roller shaft, and a drive mechanism using a hydraulic cylinder 31 allows the pedestal 21 to be reciprocated and fixed in the direction between the roller axes. Further, a length measuring probe 40 is provided on the side of the pedestal 21, and the length measuring stylus 40 slides on a scale 42 provided along the moving direction of the pedestal 21. It consists of a slider 43 that is movably fitted onto the mount 21 and can be synchronized in the direction of expansion of the steel belt 30, and is provided with a control valve 34 that controls the drive mechanism 32, and is provided with a control valve 34 for controlling the length measuring meter. An integrated roller straightening device for an endless steel belt, characterized in that a slider 43 of a child 40 and a length measuring meter 45 are interlocked and connected.