JPH0669865B2 - Method and device for winding up friction string material - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method and apparatus for winding a friction string material used in preforming an annular friction disc (facing) such as a clutch or a brake. is there.

[Prior Art] Conventionally, in preforming an annular friction disk body (facing) such as a clutch or a brake, it is disclosed in, for example, JP-A-59-202280 and JP-A-61-179351. As shown in the figure, the friction strings made of organic fiber impregnated with a binder such as phenol resin are locked one after another on the winding table that is rotated in one direction by the protruding winding pins. By pulling and transferring, the pattern that forms multiple bending points on the reference circle that is concentric with the center of rotation of the winding table is wound so that the pre-winding pattern and the post-winding pattern are superimposed in a certain phase. Was there.

[Problems to be Solved by the Invention] However, in the conventional winding, the string guide (or nozzle) is controlled to move to a predetermined position with respect to the winding pin group that is moved as the winding table rotates. When the rotation of the winding table is attempted to be performed at a high speed because the friction string material has to be supplied to the locking position, the winding pin and the string guide (or nozzle) interfere with each other and the winding pin is broken. Trouble occurred, and therefore, the speeding up of the winding was hindered.

The present invention pays attention to such a situation, and as a result of earnest studies from various aspects to solve the problem, as a result, instead of the conventional pin system, the pressure contact system, that is, the friction string material is pressed against the winding table. It was found that the speed can be further improved by adopting the transfer method.

[Means for Solving the Problems] That is, in the method for winding up the friction cord according to the present invention, the friction cord is pulled and transferred by the rotation of the winding table in one direction, and In the winding method of the friction string material, the pattern forming at least three bending points on the reference circle concentric with the center of rotation is wound so that the pre-wound pattern and the post-wound pattern are superposed in a constant phase. The friction string material is transferred while being pressed against the winding table, and the winding device for the friction string material according to the present invention is adapted to transfer the friction string material to the winding table. A pattern that forms at least three bending points on a reference circle concentric with the center of rotation of the winding table by pulling and rotating by one-way rotation, has a constant phase between the pre-winding pattern and the post-winding pattern. A device for winding a friction string that is wound so as to be superposed. In, at least three pressing heads equipped with pressing elements for pressing the friction string material against the winding table are provided, and the pressing element of one pressing head passes through the rotation center of the winding table. When the pressure contact is started at the reference point where the reference axis line and the reference circle intersect, and when it is moved to the first bending point of the three bending points as it is, the pressing of the other one of the pressing heads is performed. The pressing element is characterized in that each pressing head is mounted in such a relationship that the press contact is started at the reference point.

EXAMPLES Examples will be described below with reference to the drawings. In FIG. 1 which is a front view and FIG. 2 which is a plan view of FIG.
Reference numeral 1 denotes a winding table, and 2a to 2c denote pressing heads (three mounted as will be described later). The circular winding table 1 can rotate via a bearing 4 fixed to the apparatus frame 3. Fixed to the upper end of the shaft 5 mounted like
The shaft 5 and the shaft 7 to which the pulley 6 is fixed are connected via an electromagnetic clutch 8.

Therefore, the winding table 1 can be rotated in the same direction by rotating the pulley 6, but this drive is
This can be performed by operating the motor 9 and the speed reducer 10 which are fixed to the device frame 3. A pulley 11 fixed to the output shaft of the motor 9 and a pulley fixed to the input shaft of the speed reducer 10
A timing belt 13 is hung over the pulley 12, and a timing belt (not shown) is also hung over the pulley 6 and the pulley 14 fixed to the output shaft of the speed reducer 10.

On the other hand, the pressure beds 2a to 2c are equidistant from each other (θ ₁ = 120 degrees) as shown in FIG.
It is mounted on the circular head mounting plate 15 and has the same structure. Therefore, the one pressing head, for example, the pressing head 2a will be described.
Is a bearing fixed to the head mounting plate 15 as shown in an enlarged view in FIG. 4 which is a Z arrow view of FIG.
16, a shaft 17 inserted into the bearing 16 so that it can move up and down but not rotate, and a bracket fixed to the upper end of the shaft 17.
18, a cam floor 19 fixed to this bracket 18,
A holder 20 fixed to the lower end of the shaft 17, a slider 21 attached to the holder 20 so as to be slidable in the front-rear direction,
Pusher receiver 22 fixed to slider 21 and pusher receiver
A rod-shaped pusher 23 fixed to 22, a coil spring 24 mounted on the shaft 17 so as to urge the shaft 17 downward,
The pin 25 fixed to the pressure contact receiver 22, the pin 26 fixed to the holder 20, and the pin 25 at one end so as to urge the presser receiver 22 toward the front side (direction of arrow P in FIG. 3).
And a coil spring 27 whose value end is locked to the pin 26.

Then, as shown in the figure, when the presser 23 is pressed against the winding table 1, the shaft 17 becomes a coil spring.
The upper end of the bracket 18 is separated from the upper end of the bearing 16 by moving upward against the bias of 24. On the contrary,
As shown in FIG. 1, when in the free state, the shaft 17 is moved downward by the bias of the coil panel 24,
The lower end of the bracket 18 is brought into contact with the upper end of the bearing 16 to prevent it from coming off.

In addition, when the shaft 17 moves up and down, the parallel key 28 fixed to the shaft 17
Although it is prevented from rotating through the shaft, the shaft center of the shaft 17 is located at Q shown in FIG. More specifically, the axis Q of the shaft 17 of the pressing head 2a is located at the intersection of the axis X1-X2 orthogonal to the reference axis Y1-Y2 and the reference circle R, and the axis of the shaft 17 of the pressing heads 2b, 2c. The center Q is the angle dividing line S and the reference circle R
It is located at each intersection with. In the drawing, O indicates the center of rotation of the head mounting plate 15 (or the axis of the shaft 30).

Next, the manner of mounting the head mounting plate 15 will be described. The mounting plate 15 is fitted to the lower end of the shaft 30 and fixed by a bolt (not shown). The shaft 30 is mounted concentrically in the vertical direction with the shaft 5 to which the winding table 1 is fixed, that is, in other words, the head mounting plate 15
Is mounted concentrically with the winding table 1 in the vertical direction (see FIG. 3). The details of the mounting manner of the shaft 30 are shown in FIG. 4, but the bearing casing 32 fixed to the movable frame 31 is provided with the bearings 33, 34 and the spacer 3.
A pulley 37 is rotatably mounted via a nut 5 and a nut 36, and a pulley 37 is fixed to the upper end of the pulley 37. As shown in FIG. 2, the movable frame 31 has four columns 38a to 38d whose lower ends are fixed to the device frame 3.
It is mounted so that it can be moved vertically by being guided by.

In FIG. 1, the columns 8b of these columns are removed, but a cylinder base 39 is fixed to the upper ends of the columns 38a to 38d, and air is further attached to the base 39. The cylinder 40 is fixed. The piston rod of the cylinder 40 penetrates the cylinder base 39 and projects downward, and the movable frame 31 is fixed to the lower end thereof.

Therefore, the movable frame 31 can be horizontally moved up and down by controlling the movement of the piston rod of the air cylinder 40 by a predetermined stroke, and at that time, the pressing heads 2a to
The nip roller 43 can be moved up and down together with 2c.

The nip roller 43 is mounted on a bracket 44 fixed to the movable frame 31 so as to be rotatable via a bearing 45 and the like. Therefore, as shown in FIG. 4, the nip roller 43 moves the movable frame 31 downward. By winding table 1
This can be pressed against.

Next, describing the drive system for rotating the shaft 30,
In FIG. 1, a hollow shaft 47 is rotatably mounted on the device frame 3 via a bearing 48 fixed to the device frame 3, and its lower end is fixed to the pulley 14. The axis 47
A nut 50 is fixed to the upper end of the spline shaft 49, and the lower end of the spline shaft 49 is fitted into the nut 50.The upper end of the spline shaft 49 is connected to the shaft 52 via a shaft coupling 51 and 52 is rotatably mounted on the movable frame 31 via a fixed bearing 53.

Therefore, by operating the motor 9 and the speed reducer 10 to rotate the shaft 47, the spline shaft 49 and the shaft 52 can be rotated. Therefore, the pulley 54 and the pulley 37 fixed to the shaft 52 can be rotated.
The shaft 30 can be rotated via a timing belt (not shown) that is hung around the.

Also, the head mounting plate 15 is rotated by this rotation,
The mounting plate 15 and the winding table 1 are in the same direction, that is, in the counterclockwise direction (direction of arrow T shown in FIG. 3).
To be rotated.

It should be noted that the rotation speed ratio between the two is Va / when the rotation speed of the head mounting plate 15 is Va and the rotation speed of the winding table 1 is Vb.
It is set to Vb = 13/12. Therefore, the head mounting plate 15
One rotation of the winding table 1 causes a rotation delay (phase) of the angle θ ₂ (about 27 degrees 41 minutes) shown in FIG. 5 which is a plan view. Further, while the head mounting plate 15 is rotating, the cam floor 19 is guided by the cam 55 to move up and down, and thus the shaft 17 is moved up and down. The cam 55 is fitted in the bearing casing 32 and Movable frame 31
It is fixed to the cam casing 56 which is fixed to.

Next, regarding the winding mode, prior to starting this, as shown in FIG. 5, the front end of the friction string material 61 supported by the supply guide 60 is attached via the adhesive tape 62. Fixed to the winding table 1. The supply guide 60 is mounted by a solenoid (not shown) so that it can be swung in the vertical direction via a fulcrum, and this is swung upward and positioned at 60a in the figure.

Therefore, the friction string material 61 made of organic fiber or the like impregnated with a binder such as a phenol resin is located not to pass the reference point U which is the intersection of the reference axis line Y1-Y2 and the reference circle R. However, in this state, the piston lot of the air cylinder 40 is projected and the movable base 31 is moved from the upper position shown in FIG. 1 to the lower position (in FIG. 4, the nip roller 43 is lightly attached to the winding table 1). It is moved to the contact position) and the motor 9 is operated.

Then, the winding table 1 is rotated and the head mounting plate 15 is rotated, and the rotation of the head mounting plate 15 moves the pressing heads 2a to 2c.

Thus, when the pressing element 23 of the pressing head 2b approaches the reference point U, the supply guide 60 is swung downward, so that the friction cord 61 is positioned at a position passing the reference point U. Together with the winding table 1, the pressing head 2b
When the pressure contactor 23 reaches the reference point U, it is brought into the same state as the pressing head 2a shown in FIG. 4, and therefore the pressure contact of the friction string material 61 is started.

In the pressing head 2b, before the head mounting plate 15 is rotated, the cam floor 19 is positioned on the upper end surface 55a of the cam 55 and the shaft 17 moves upward, that is, the pressing member 23 of the pressing head 2b.
Are located above the nip roller 43. However, when the head mounting plate 15 is rotated and the pressing head 2b is moved, the cam floor 19 is lowered by the downward inclined surface that is continuous with the upper end surface 55a.
Is gradually guided down, and at the reference point U, the cam floor 19 is separated from the lower end surface 55b.

On the other hand, the pressing head 2c is in the same state as the pressing head 2a before the head mounting plate 15 is rotated,
When the head mounting plate 15 is rotated and the pressing head 2b is moved, the cam floor 19 moves to the lower end surface 55b of the cam 55,
The upper end surface 55a is guided by the ascending slope that is continuous with this, and therefore the shaft 17 is moved upward so that the presser 23 is positioned above the nip roller 43.

Therefore, each pressing head 2a is not disturbed by the nip roller 43.
~ 2c can be circularly moved in one direction, but at that time, the pressing head 2b which presses the friction string material 61 against the winding table 1 at the reference point U is moved in a state of being pressed.
As a result, the friction string material 61 is pulled and transferred. Since the friction string material 61 is impregnated with a binder such as a phenol resin, it has adhesiveness and can be satisfactorily transferred without slipping only by pressing.

Then, when the presser 23 of the pressing head 2b is moved to the point E shown in FIG. 5 while the friction string material 61 is being pressed, the presser 23 of the next pressing head 2c is moved to the reference point U. Press the same as above. This state is shown in FIG.
The supply guide 60 is swung upward when the pressing head 2b passes the reference point U, and is swung downward when the next pressing head 2c approaches the reference point U. The heads 2a to 2c are controlled one after another in relation to the movement of the heads.

In FIGS. 5 to 10, A to M are points obtained by dividing the reference circle R into 13 equal parts, and these points indicate bending points to be described later. When the pressing element 23 of the pressing head 2b at the point A is moved to the point E and the pressing element 23 of the pressing head 2c at the reference point U is moved to the point A, the pressing element 23 of the next pressing head 2a becomes Press at the reference point U.

Then, subsequently, when the presser 23 of the press head 2b moved to the point E is moved to the point I and the presser 23 of the press head 2c moved to the point A is moved to the point E, Point U
The pressing element 23 of the pressing head 2a is moved to point A. This makes one turn, but this state is shown in FIG. As is clear from this, each time the friction string 61 is pulled and transferred and wound once, the pattern forming the three bending points (three points A, J and F) is wound on the reference circle R. be able to. In addition, in FIG. 6, a pressing element of the pressing head 2b
23 moves upward during the movement from the point E to the point F, that is, the cam floor 19 rides on the lower end surface 55b of the cam 55 and is guided by the ascending sloped surface continuing to the upper end surface 55b.
55a, so that the shaft 17 is moved upwards and the pusher 23
Are positioned above the nip roller 43.

Further, in FIG. 7, when the first pressure contact reaches the point A, the pressure element 23 of the pressure head 2b which is first pressure contacted is the reference point U.
However, when the rotation speed of the head mounting plate 15 is Va and the rotation speed of the winding table 1 is Vb, such a phase is Va / Vb = 13/12. Based on the setting.

Hereinafter, the same pattern can be wound one after another through similar steps. FIG. 8 shows the figure wound twice, and FIG. 9 shows the figure wound 13 times.

As is clear from this, the pre-wound pattern and the post-wound pattern can be successively superimposed on the constant phase θ ₂ . At that time, since the friction string material 61 is pressed against the winding table 1 and transferred to be wound up in a predetermined pattern, the winding can be performed at a higher speed.

It should be noted that during winding, the movable frame 31 is slightly moved upward by the air cylinder 40 for each winding, so that the nip roller 43 is also moved upward and the nip pressure is kept constant. Further, since the head mounting plate 15 is rotated faster than the winding table 1, the friction string material 61 is pressed against the winding table 1 and a phase is generated between the two during the transfer, but the coil spring 27 Since the pressing element 22 is moved integrally with the winding table 1 against the bias, it can be wound without any problem.

Then, after completing 13 windings, the motor 9 is stopped and the movable frame 31 is moved upward by the air cylinder 40 as shown in FIG. 1, and then the friction cord 61 is cut. After being divided into those on the supply side and those on the winding side, the winding molded body can be removed from the winding table 1 using an appropriate jig.

In this example, the reference circle R is divided into 13 equal parts for the time being, but since the reference circle R is not exactly divided into equal parts, the angular error is accumulated as the number of winding turns increases. Therefore, in order to correct this, the electromagnetic clutch 8 is mounted so that the winding table 1 can be returned to the original reference position after winding 13 times.

Although one embodiment according to the present invention has been described above in detail, in the present invention, winding may be performed in a pattern in which three or more bending points are formed on the reference circle R for each winding. In FIG. 10, an example of winding a pattern forming four bending points (D, G, J, and M points) is shown, but it may be more than this. Further, in connection with this, the pressing heads may be mounted in an appropriate number of three or more.

Although the nip roller 43 can be omitted, it is preferable to install the nip roller 43, and the pressing head group is such that the pressing element of one of the pressing heads starts the pressure contact at the reference point and the bending point group of the bending point group as it is. When the pusher of the other one of the pressing heads is moved to the first bending point of them, as long as it is mounted in a relationship of starting the pressure contact at the reference point, the pressure contact of the pressing element of the other pressing head, That is, it is not limited to two-point pressure welding, and may be three-point pressure welding or more. Regarding the reference axis, the X ₁ -X ₂ axis may be used as the reference axis.

[Advantages of the Invention] As described above, according to the present invention, the patterns that form at least three bending points by pressing the friction string material against the winding table and transferring it are the pre-winding pattern and the post-winding pattern. (EN) A method and an apparatus for winding a friction string material that can be wound at a higher speed so that they are superposed on a fixed position.

[Brief description of drawings]

FIG. 1 is a front view of a winding device for a friction cord, FIG. 2 is a plan view of FIG. 1, FIG. 3 is a bottom view of a pressing head mounting portion, and FIG. FIG. 5 is a front view showing a mode in which the pressing member of the head is pressed, FIG. 5 is a plan view showing a supply mode of the friction string material to the winding table, and FIG. FIG. 7 is a plan view showing a state in which the film is wound around once, FIG.
FIG. 9 is a plan view showing a state in which it is wound in a circle, FIG. 9 is a plan view showing a state in which it is wound 13 times, and FIG. 10 is a plan view showing a state in which a pattern forming four bending points is wound once. 1 ... Winding table, 2a to 2c ... Pressing head, 23 ... Pressing element, 61 ... Friction string material, A to M ... Bending point, R ... Reference circle, U ... Reference point, Y _1- Y ₂ ...... Reference axis

Claims (2)

[Claims] 1. A pattern in which at least three folding points are formed on a reference circle concentric with the center of rotation of the winding table by pulling the friction string material by rotating the winding table toward one direction. In the winding method of the friction string material, which is wound so that the first winding pattern and the second winding pattern are superimposed in a constant phase,
A method for winding up a friction cord material, which comprises pressing the friction cord material against the winding table and transferring the friction cord material. 2. A pattern in which at least three folding points are formed on a reference circle concentric with the center of rotation of the winding table by pulling the friction string material by rotating the winding table toward one direction. In the winding device for the friction string material, which winds the first winding pattern and the second winding pattern so as to be superimposed in a constant phase,
At least three pressing heads equipped with pressing elements for pressing the friction string material against the winding table are provided, and the pressing element of one pressing head passes through the rotation center of the winding table. When the pressure contact is started at a reference point at which the reference circle intersects with the reference circle and is moved to the first bending point among the three bending points as it is, the pressing element of another pressing head is pressed. However, each of the pressing heads is mounted in such a relationship that the pressure contact is started at the reference point.