JPH0629631B2 - Rough shaped material for annular friction plate and method for manufacturing the same - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a rough material for annular friction plates used for facing such as clutches and brakes, and a method for manufacturing the same. Specifically, we improved the arrangement of the base cords to strengthen the annular friction plate, and worked to improve the production efficiency of the rough material by interlocking, simplifying, and saving labor in each molding process. In addition, the present invention relates to improvement of a rough shaped material for an annular friction plate and a method of manufacturing the same for increasing versatility.

[Prior Art] Conventionally, as a rough material for an annular friction plate made of a string material, a string material is alternately stretched in a zigzag shape between an inner peripheral portion and an outer peripheral portion of the annular plate, and is facing each other. It is known that a bent portion having a letter shape is formed, and further, an outer peripheral layer is formed in a ring shape along the outer peripheral portion.

As an example of the manufacturing method thereof, a so-called winding jig having a large number of engaging shafts concentrically and annularly connected to each other on the inner side and the outer side, the string material is appropriately wound up by applying pressure or tension. The thermoid method is known.

Specifically, as shown in FIG. 5 to FIG. 7, this thermoid method guides the string material 4 supported by the guide arm 3 every 20 degrees of rotation of the winding jig 1 by the drive source 2. The nozzle 5 is moved between the inner and outer shafts 6 and 7 by one pitch. That is, as shown in FIGS. 7A and 7B, the nozzle 5 is displaced from the outer position P1 of the outer shaft 7 to the center position P2 of the outer shaft 7 and the inner shaft 6.

At the next 20-degree rotation of the winding jig 1, the nozzle 5 is displaced from the central position P2 to the inner position P3 of the inner shaft 6, and the cord 4 is entangled with the corresponding inner shaft 6. In this way, the nozzle 5 is provided at each of the positions P1 to P for every 20 degrees of rotation of the winding jig 1.
3 is sequentially displaced, and the cord material 4 is entangled in a zigzag shape to the corresponding inner or outer shaft 6 or 7.

Further, the entangled cord material 4 is pressed by the forward movement of the hammer 8 every 320 degrees of rotation of the winding jig 1, and as a result, a desired rough material can be obtained (Japanese Patent Laid-Open No. 59-202280). .

[Problems to be Solved by the Invention] In such a thermoid system, the string material 4 for constructing the rough-shaped material is in a tense state because pressure or tension is applied thereto. That is, the cord material has a substantially V-shape facing each other in a zigzag shape, and is tightly locked and stretched between the inner shaft 6 and the outer shaft 7.

By the way, the annular friction plate rotates at high speed together with the wheel during use. Therefore, a large centrifugal force acts on the annular friction plate, but this centrifugal force must be received by the tension of the cord material. However, the rough shaped material obtained by the conventional thermoid method and the annular friction plate obtained from the rough shaped material have a substantially V-shaped bent portion having an apex in the inner circumferential direction in which the cord material runs counter to centrifugal force. Therefore, even if centrifugal force acts on this bent portion, no tension acts. That is, this bent portion cannot receive the centrifugal force.

Further, in the conventional method, since the displacement distance of the nozzle 5 is greatly different for each size of the rough-shaped material for the annular friction plate, there is a limitation as a winding device corresponding to all of these, and the versatility is lacking.
Moreover, the winding jig 1 is accompanied by the displacement of the nozzle 5 every 20 degrees of rotation, and the cord material 4 by the hammer 8 every 320 degrees of rotation.
Since each of them was stopped due to the pressure molding, the loss time was long and the production efficiency was hindered. Further, in the conventional method, since the driving sources of the winding jig 1 and the hammer 8 are independent of each other, it is practically possible to solve the responsiveness, interlocking and reliability with respect to complicated operations such as winding stop and start which are sequentially repeated. There is a problem.

[Object of the Invention] The present invention has been made in order to solve the above-mentioned conventional problems, and provides a cord material that constitutes a rough shape member for an annular friction plate with a degree of freedom of deformation and a centrifugal force generated by rotation. The purpose of the present invention is to adapt to the action, to prevent the generation of internal stress, to prevent the warp after heating and pressure molding, and also to simplify the process of arranging the cord and to save labor.

[Structure of the Invention] (Means for Solving Problems) The rough shape member for an annular friction plate of the present invention is a rough member for an annular friction plate, which is formed by winding a cord material as a base portion of the friction plate to form an annular body. In the shape member, the cord material has an inner and outer connecting cord portion that rotates around the annular body while sequentially passing through the outer peripheral portion and the inner peripheral portion of the annular body, and an outer peripheral cord portion that rotates around the annular body while passing only the outer peripheral portion of the annular body, and The inner-outer connecting cord portion is formed by one point on each continuous outer peripheral portion, one point on the inner peripheral portion and one point on the outer peripheral portion toward the center of the annular body.
The outside angle is always less than 180 degrees.

Further, the manufacturing method of the present invention is a method for manufacturing a rough-shaped material for an annular friction plate, in which a string material serving as a base portion of a friction plate is wound to form an annular body, and a resin material or rubber is used for the string material serving as a base portion of the friction plate. And the like, and a large number of outer peripheral engaging bodies that are substantially concentric and that are arranged at appropriate intervals on the outer peripheral portion and a large number of inner peripheral engaging bodies that are arranged at appropriate intervals on the inner peripheral portion. The annular body is rotated while sequentially passing the cord material treated as described above, and is formed by one point on each continuous outer peripheral portion, one point on the inner peripheral portion and one point on the outer peripheral portion toward the center of the annular body. The main step of always forming the angle of the string material in the outer portion to less than 180 degrees and arranging the inner and outer connecting cord parts, and the outer peripheral string part of the string material by rotating the ring body while passing the string material only through the outer peripheral part of the annular body. And a cord arranging step including a sub step of arranging the cord.

Here, the cord material, which is the base material of the rough shape material for the annular friction plate, is mainly composed of, for example, asbestos, glass, and reinforced fiber, and is impregnated with a thermosetting resin such as phenol resin or melamine-modified phenol resin or rubber, What is attached and dried is used. Further, the engagement body provided on the outer peripheral portion or the inner peripheral portion can be constituted by a large number of hollow or solid cylindrical pins or the like that are substantially concentric and are appropriately spaced and arranged in a circular shape.

In carrying out the present invention, the following is preferable.

(1) The chemical treatment step for the string material, the arranging step for the string material, and the rough shape material pre-pressing step are linked and operated by a predetermined drive source.

(2) For the cord material, a step of forming a ring-shaped rough shape material is performed by alternately repeating the respective forming steps of the bent inner and outer connecting cord portions and the annular outer peripheral cord portion, and by appropriately pressing in the thickness direction. Run.

(3) The arrangement of the string material is such that a plurality of shafts arranged substantially concentrically and annularly outside and inside are erected on a rotatable winding jig, and a direction traversing an annular surface composed of the plurality of shafts. A nozzle that guides the string material is provided, and the nozzle is sewn from the outside of the outer shaft to the outer shaft and the inner shaft in synchronization with the rotation of the winding jig to form an annular surface. After being traversed and brought into contact with the inner shaft to be bent, a step of bending and bridging the cord material between the outer shafts separated by a predetermined distance is performed.

(4) A large number of circles arranged in an even number or an odd number are arranged, and the inside is arranged with the number of axes smaller than that of the outside to divide the circumference equally.

[Effect of the Invention] According to the present invention, the cord material has the inner and outer connecting cord portions that rotate around the annular body while sequentially passing through the outer peripheral portion and the inner peripheral portion of the annular body, and the inner and outer connecting cord portions include each continuous outer peripheral portion. 1 point on the inner peripheral portion and 1 point on the outer peripheral portion toward the center of the annular body.
The inner-outer angle is always less than 180 degrees.

As a result, in the rough material of the present invention, the inner and outer connecting cord portions can be sufficiently adapted to the centrifugal force action due to the rotation, and the burst strength is improved.

Further, according to the manufacturing method of the present invention, since the cord is wound while being brought into contact with each of the plurality of inner circumferential engaging bodies and being bent, the cord constituting the inner circumferential side of the annular body has two circumferences. Will be distributed in a high density between. Therefore, the degree of freedom of deformation at the time of compression is improved, generation of internal stress is suppressed, and warpage after molding is corrected. Therefore, the string material and the rough shape material are reinforced, and the friction plate can be improved in quality and precision.

However, when the inner-outer connecting portion is configured as described above, the winding density on the inner circumference side is inevitably higher than that on the outer circumference side. Therefore, since the rough material of the present invention has the outer peripheral cord portion that goes around the outer peripheral portion of the annular body, the winding density on the outer peripheral side is increased accordingly, and the winding density can be made uniform. As a result, the overall strength is substantially uniform, burst strength and friction performance are improved, and yarders are prevented.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a plan view showing an embodiment of a rough material for an annular friction plate,
FIG. 2 is an enlarged view of a defect in which a rough shape member for an annular friction plate is partially cut away.

In the rough shape member for an annular friction plate of the present embodiment, the string member 14 is wound and the annular body 10 is formed. The string material 14 is one continuous string, and includes nine inner shaft groups 1 arranged concentrically in the circumferential direction on an annular flat surface portion 15a of a winding jig 15 described later shown in FIG.
6a to 16i (inner peripheral engagement body) and 18 outer shaft groups 1
When wound around 7a to 17r (outer peripheral engagement body), the inner / outer connecting cord portion 141 and the outer peripheral cord portion 14 are wound depending on the winding position.
It is divided into two.

More specifically, the winding jig 15 includes the inner shaft groups 16a to 16i.
When rotated in the counterclockwise direction together with the outer shaft groups 17a to 17r, as shown in FIGS. 1A and 1B, the cord material 14 has an inner circumference starting from the outer shaft 17a, which is one point on the outer circumference. It is bridged through an inner shaft 16b, which is one point of the section, to an outer shaft 17f, which is another point of the outer peripheral portion, which is rotated by 5 pitches in the counterclockwise direction.

Next, since the cord material 14 is bridged by the outer shaft 17k rotated 5 pitches through the inner shaft 16e, it is further bridged by the outer shaft 17p rotated 5 pitches through the inner and outer shafts 16g. is there.

Further, the string material 14 is 16a → 17c → 16c → 17h →
16f → 17m → 16h → 17r → 16b → 17e → 1
6d->17j->16g->17o->16i-> 17b ... are sequentially and continuously entangled to finally form the annular body 10.

As described above, the annular body 10 has the cord 14 attached to the outer shaft 17a.
˜17r, the inner shafts 16a to 16i are brought into contact with each other, and then reciprocated many times to be bent into a shape in which a large number of substantially V-shapes are connected to each other. I am doing it.
As a result, the cord material 14 has a plurality of inner / outer connecting cord portions 141 that sequentially pass through the outer shafts 17a to 17r and the inner shafts 16a to 16i.

The inner / outer connecting cord portion 141 is, for example, as shown in FIG. 2, the outer shaft 17q and the inner peripheral portion 1 as one point of each continuous outer peripheral portion.
The outer-inner-outer angle toward the center of the annular body 10 formed by the inner shaft 16a as a point and the outer shaft 17d as one point of the outer peripheral portion is always formed to be less than 180 degrees. In this embodiment, it is about 160 degrees.

Further, the plurality of inner / outer connecting cord portions 141 are sequentially laminated with each other while sequentially shifting the phases of the bending pitch from each other to form another layer, thereby forming a multiple layer in the thickness direction. Then, if necessary, the cord material 14 is moved from the outer shaft 17a to 17r via 17h, 17i, etc.
The outer circumferential cord portion 142 is formed by winding the outer circumferential portion around the outer circumferential portion of the annular body 10 in a bundle, and the outer circumferential layer is formed in a bundle. Although the outer peripheral layer has a single row in FIG. 1, it may be arranged irregularly.

The diameter of the cord 14 is preferably 2.0 mm to 5.0 mm. For example, when the inner diameter is 150 mm and the outer diameter is 236 mm,
When about 220 g of the cord material 14 is used, a large number of cord materials 14 are laminated around the annular plane of the winding jig 15 for 25 to 30 times. It is preferable that the total of the cord cross-sectional areas of the cord material existing per 1 cm of the rough material is 3.5 cm to 17.5 cm.

Next, regarding the apparatus for manufacturing the rough shape material for the annular friction plate,
This will be described with reference to FIGS.

The manufacturing apparatus includes a nozzle 20 for guiding the cord material 14, a winding jig 15 for winding the cord material 14 guided by the nozzle 20,
The hammer 24 is configured to compress the string material 14 wound around the winding jig 15 in the stacking direction, the nozzle 20, the winding jig 15, the electric motor 12 that drives the hammer 24, and an interlocking member thereof. .

That is, the drive board 13 that is interlocked via the gear G2 on the rotary shaft 11 that is rotationally driven by the electric motor 12 as a drive source,
A disk-shaped winding jig 15 provided with eighteen outer shafts 17a to 17r and inner shafts 16a to 16i bridging the cord material 14.
Are integrally rotatably connected. Outer shaft 17a-1
7r and the inner shafts 16a to 16i are erected on the winding jig 15 in a concentric circle shape with double inner and outer sides with respect to the center of rotation. The winding jig 1 is provided on both sides of one side of the winding jig 15.
5 and the multiple shafts 16a to 16i, 17a to 17
A movable platen 18 that is loosely fitted in r and is movable in the axial direction is provided and is operated by an actuator (not shown).

An arm 19 that is swingable at a predetermined distance is provided on the tip ends of the many shafts 16a to 16i and 17a to 17r. The outer shafts 17a to 17 are attached to the tip of the arm 19.
r and outer shafts 17a to 17r and inner shaft 16a
16i, the guide element 21 provided with a nozzle 20 that guides and draws out the string material 14 is connected and provided. The guide 21 includes a drive shaft 11, a gear G1, G4, a cam 22, and an actuator 2 as a connecting member for the electric motor 12.
3 are connected to each other, and the displacement can be shifted in synchronization with the rotation of the winding jig 15.

The hammer 24 is a face plate of 1/3 circle, the rotation of which is synchronized with the winding jig 15 via a belt 25 and a cam 26 as a connecting member, and the hammer 24 is swingable every 1/3 rotation. The shafts 16a to 16i and the outer shafts 17a to 17r are arranged so as to face each other. Also, the winding jig 15 is attached to the hammer 24.
The inner shafts 16a to 16i and the outer shaft 1
A large number of holes 24a for loosely fitting 7a to 17r are provided, and the hammer 24 has inner shafts 16a to 16i and an outer shaft 17a.
In order to appropriately press the string material 14 entangled with a to 17r with the driver board 18, a pressing plate 25 that is pushed in the direction of the driver board 18 is provided.

The pressing plate 25 is connected to the electric motor 12 by the drive shaft 1 as a connecting member.
1, a cam 26, and an actuator 27 so as to be interlockable.

Also, as shown in FIG. 3, on the side of the supply source 28 of the cord material 14,
A resin tank 30 for impregnating the cord material 14 with a liquid resin through a guide roller 29, a drying oven 31 for drying the impregnated resin, a rubber tank 32 for adhering rubber to the cord material 14, and a rubber attached to the cord material 14. The drying furnace 31 and the pulley group 33 that guides and guides the chemically treated string material 14 to the nozzle 20 in association with the rotation of the winding jig 15 are connected to each other.

Further, the pulley group 33 serves as a step device to guide and convey the cord material 14 between the drying furnace 31 and the winding jig 15 so as to properly and smoothly transfer the cord material 14 to the cord material 14. A pulley A that is movable in the transport direction is provided. This step device maintains a constant line speed for the purpose of accumulating loss time from taking out the finished rough material in the winding jig 15 to the start of the next winding and performing chemical treatment of the string material with resin or rubber. In addition, it also serves to adjust the winding speed of the cord material in the winding jig 15.
When a speed difference between the winding speed and the line speed occurs, the pulley A moves upward with respect to the figure. The pulley A is configured so that the winding jig 15 stops when it reaches the rising end. When the pulley A descends to a predetermined position, the winding jig 15
Is started again, and the pulley A becomes movable. By repeating these related operations, the difference between the line speed and the winding speed is efficiently and properly adjusted, and a so-called damper action is performed. As a result, it is possible to consistently and integrally operate from the process of chemically unifying the cord 14 to the winding. The winding speed of the electric motor 12 is set to be slightly higher than the line speed for each size of the rough material.

Although the winding jig 15 is horizontally arranged in the rough material manufacturing apparatus, the winding jig 15 is not limited to this and may be vertically arranged. or,
When the nozzle 20 reciprocates substantially linearly with the rotation of the winding jig 15, the winding jig 15 and the nozzle 20 may be moved continuously or intermittently.

Next, a method of manufacturing a rough material by the rough material manufacturing apparatus configured as described above will be described.

The string material 14 as a base material of the rough material is the source 2
8 is guided out by the guide roller 29 and the resin tank 3
Introduce to 0. After the string material 14 is impregnated with the liquid resin, it is conveyed from the resin tank 30 into the drying furnace 31, and is dried in the drying furnace 31. Next, the cord 14 is a rubber tank 32.
Is introduced into and the rubber adheres to the outer peripheral portion. After this, it is conveyed again to the drying furnace 31 and dried.

In this way, the cord material 14 whose resin or rubber has been chemically and integrally treated on the outer peripheral portion is properly controlled to be delivered to the winding jig 15 by the step device in the pulley group 33, and then the guide member 21. Take-up jig 1 derived from the nozzle 20 of
5, inner shafts 16a to 16i, outer shafts 17a to 17r
Will be bridged to each.

For example, as shown in FIGS.
The nozzle 20 is moved to the inner and outer shafts 16a to 16i, 1 at every 00 degrees.
From 7a to 17r, the pitch is advanced by 5 pitches, and the outer shafts 17r, 17a, 1
7b, 17c and the inner shafts 16i, 16a, 16b via the central position P2, and is displaced by the inscribed circle method of shifting to the other outer shaft 17d with a predetermined distance, and the corresponding shaft 17d is displaced. Engage the material 14.

Further, for each rotation angle of the winding jig 15 of 120 degrees, the hammer 24 that appropriately pressurizes the bridged material 14 is moved forward to advance the laced material 14.
Pressurize and shape. At this time, the hammer 24 is a face plate of 1/3 circle as described above, and since it can be oscillated every 1/3 rotation in conjunction with the winding jig 15, the cord material 14 in the winding jig 15 is moved. The continuous pressurization can be performed without stopping the winding, and the production efficiency can be significantly improved.

As the winding jig 15 rotates in this manner, the arm 19 swings and displaces in the radial direction in synchronism with the winding jig 15 to repeat the reciprocating motion, and concentrically with respect to the rotation center for a predetermined distance (pitch).
Between the outer shafts 17a to 17r that are separated from each other by contacting any of the inner shafts 16a to 16i to bridge the string material 14, and connect a large number of substantially V-shapes in the circumferential direction. One layer is formed by making a round while bending in a curved shape and alternately bridging.

Once a layer is formed, the nozzle 20 is moved to the outer shaft 1
By holding the outer side of 7a to 17r stationary and rotating the winding jig 15 in a predetermined direction, the cord material 14 is wound outward and an outer peripheral cord portion is formed. As a result, the bending of the inner and outer connecting cord portions and the formation of the annular outer peripheral cord portion are appropriately repeated,
A rough material is formed.

According to this embodiment, the string material 14 passes through the outer peripheral portion and the inner peripheral portion of the ring-shaped body in order and turns around the ring-shaped body 15.
According to FIG. 2, the inner and outer connecting cord portions 141 have an outer shaft 17p as one point of each continuous outer peripheral portion, an inner shaft 16a as one point of the inner peripheral portion, and one point of the outer peripheral portion. The outer-inner-outer angle toward the center of the annular body 15 formed by the outer shaft 17d is always less than 180 degrees. Therefore, the rough material can absorb the centrifugal force by the inner and outer connecting cord portions 141.

Further, in this embodiment, since the nozzle 20 is displaceable by the inscribed circle method as described above, the gap between the nozzle 20 and the many inner shafts 16a to 16i and the outer shafts 17a to 17r becomes large. Correspondingly, the diameter of the nozzle 20 can be increased as compared with the conventional one. This allows the nozzle 20
The rigidity of the nozzle 20 can be increased, and the displacement distance of the nozzle 20 itself can be minimized.

For example, with respect to the diameter of the nozzle 20, the diameter is 11.5 mm in the present embodiment, whereas the diameter is 9 mm in the related art, and the diameter is 8 mm in the present embodiment, whereas the diameter is 6 mm in the present embodiment. I was able to.

Further, by the inscribed circle method, there is no difference in the displacement distance of the nozzle 20 for each size of the rough shape material, and it is possible to improve versatility. For example, the difference in displacement distance between conventional nozzles is 9 to 9.5.
Inch, and this corresponding size has an outer diameter of 224-223 mm
In contrast, in this embodiment, the difference in the displacement distance of the nozzle is 8
~ 12 and the corresponding size is an outer diameter of 200 to 260
mm and the applicable range can be greatly expanded.

Further, since the pressing action of the hammer 24 on the bridged material 14 of this embodiment can be continuously executed every 1/3 rotation of the winding jig 15, the play time of the apparatus is remarkably reduced. can do. Further, the electric motor 12 interlocks the operation of the winding jig 15, the nozzle 20 and the hammer 24 with the chemical treatment process and the arranging process of the cord material 14, thereby stopping or starting the winding of the cord material 14. It is possible to improve responsiveness and reliability to repetition of.

[Brief description of drawings]

FIG. 1 is a plan view of a rough material in one embodiment of the present invention, FIG. 2 is an enlarged view of a portion of the rough material, and FIG. 3 is a schematic view showing a manufacturing process of one embodiment of the present invention. FIG. 5 is a configuration diagram showing a main part of a manufacturing apparatus according to an embodiment of the present invention, FIG. 5 is a front view showing a conventional apparatus, FIG. 6 is a front view showing a conventional rough material, and FIG. It is a partially broken enlarged view showing a part of the conventional rough shape material in the drawing. In the figure, 10 ... Coarse shaped material, 14 ... String material 16 ... Inner shaft, 17 ... Outer shaft 12 ... Electric motor, 15 ... Winding jig 20 ... Nozzle, 24 ... Hammer 30 ... … Resin tank, 31… Drying oven 32… Rubber tank, 33… Pulley group

Claims (2)

[Claims] 1. A rough shaped material for an annular friction plate in which a cord material as a base portion of a friction plate is wound to form an annular body, wherein the cord material sequentially passes through an outer peripheral portion and an inner peripheral portion of the annular body. It has an inner and outer connecting cord portion that rotates around the annular body and an outer peripheral cord portion that rotates around the annular body while passing only the outer peripheral portion of the annular body, and the inner and outer connecting cord portions have one point and an inner periphery of each continuous outer peripheral portion. Formed at one point on the outer circumference and one point on the outer circumference, and facing toward the center of the annular body.
A rough-shaped material for an annular friction plate, characterized in that the inside-outside angle is always less than 180 degrees. 2. A method for manufacturing a rough material for an annular friction plate in which a cord material as a base portion of a friction plate is rolled up to form an annular body, and a resin material, rubber or the like is integrated with the cord material as a base portion of the friction plate. The string material processing step to be processed, and the plurality of outer peripheral engaging bodies which are substantially concentric and are arranged at appropriate intervals on the outer peripheral portion and a plurality of inner peripheral engaging bodies which are arranged at appropriate intervals on the inner peripheral portion The annular body is rotated while sequentially passing the cord material, and is formed by one continuous point on the outer peripheral portion, one point on the inner peripheral portion, and one point on the outer peripheral portion, and the outer portion faces toward the center of the annular body. The main step of arranging the inner and outer connecting cord portions by always forming the angle of the cord material in the inner-outer portion to less than 180 degrees, and rotating the annular body while passing the cord material only through the outer peripheral portion of the annular body. A rough shape for an annular friction plate, which comprises a cord arranging step including a sub-step of arranging an outer peripheral cord portion of the cord material. The method of production.