JPH0468492B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION A. Object of the Invention (1) Field of Industrial Application The present invention relates to a method of manufacturing a friction plate for a clutch and a manufacturing device used in the manufacturing method.

(2) Conventional technology Conventionally, when manufacturing this type of friction plate, a friction material sheet is cut to obtain a fixed-length product, and then the fixed-length product is punched to obtain an annular friction material.
Thereafter, a method is used in which the friction material is bonded to the annular core plate, and the friction material is further subjected to cutting or molding to obtain a large number of oil grooves.

(3) Problems to be solved by the invention However, when the above-mentioned punching process is adopted, the yield of friction material is low at 20 to 40%.
The problem is that it is not economical.

Furthermore, when oil grooves are obtained by cutting, the groove depth tends to be shallow in order to avoid damage to the core plate, which results in poor oil draining and reduced durability due to deterioration of cooling performance. On the other hand, when the oil grooves are obtained by molding, it is necessary to prepare a mold corresponding to the size of the friction plate, which is extremely uneconomical. There are also some problems.

In view of the above, the present invention provides an economical manufacturing method and manufacturing apparatus used in the method that can improve the yield of friction material or obtain oil grooves having the same depth as the thickness of the friction material. The purpose is to provide.

B. Structure of the Invention (1) Means for Solving Problems The present invention provides a method in which a large number of friction material segments are arranged on the adhesive surface of an annular core plate with oil grooves between adjacent segments. A method for manufacturing a friction plate for a clutch bonded along the circumferential direction of a core plate, the method comprising: positioning the core plate with the adhesive surface coated with adhesive facing upward; , a step of feeding out a plurality of friction material tapes corresponding to one friction material segment to a plurality of feeding positions arranged at equal intervals along the circumferential direction of the core plate; cutting each of the friction material tapes; to obtain a plurality of friction material segments, and press bonding each friction material segment to the bonding surface of the core plate; and feeding out each friction material tape in an amount corresponding to the next friction material segment. and a step of rotating the core plate for bonding the friction material segments.

The present invention also provides a friction plate for a clutch in which a large number of friction material segments are bonded to the adhesive surface of an annular core plate along the circumferential direction of the core plate with oil grooves between adjacent segments. An apparatus for manufacturing, wherein the core plate is positioned with the adhesive surface coated with an adhesive facing upward, and a support table rotates intermittently every time the friction material segment is bonded, and above the support table,
a plurality of feeding members that intermittently feed out a plurality of friction material tapes in an amount corresponding to one friction material segment at a plurality of feeding positions arranged at equal intervals along the circumferential direction of the core plate, and each of the friction material tapes; The present invention is characterized in that it includes a plurality of pressing members that can be moved up and down to press and bond a plurality of friction material segments obtained by cutting a material tape to the core plate.

(2) Effects According to the above manufacturing method, friction material segments are obtained from a plurality of friction material tapes and these friction material segments are bonded to the core plate, so the yield of friction material is improved and the friction material segments adjacent to each other are A friction plate for a clutch can be obtained which is provided with an oil groove having the same depth as the thickness of the friction material therebetween. Furthermore, it can be easily applied to the production of friction plates of various sizes.
Coupled with the above-mentioned improvement in yield, economical efficiency can be improved. Furthermore, since multiple friction material segments are bonded to the core plate in one press bonding process, the work time for bonding friction material segments is shortened.
In turn, the manufacturing efficiency of friction plates for clutches can be improved.

According to the manufacturing apparatus, the following operations are performed: feeding out each friction material tape, cutting each friction material tape to obtain friction material segments, and adhering the obtained plurality of friction material segments to a core plate. It is possible to reliably and repeatedly manufacture clutch friction plates efficiently.

(3) Embodiment Figures 1 to 3 show a friction plate 1 for a clutch, and the friction plate 1 includes a ring-shaped core plate 2 and a plurality of plates bonded along the circumferential direction to both bonding surfaces a and b of the core plate 2. An oil groove 4 having the same depth as the thickness t of the friction material segments 3 is formed between adjacent friction material segments 3.

FIG. 4 shows an automatic manufacturing device for the clutch friction plate 1, which has a chain-type main conveyor 5 whose conveying surface moves from the left end to the right end, and is located beside the main conveyor 5 along the chain-type main conveyor 5. A loading mechanism L for supplying a core plate, a first adhesive application mechanism C ₁ , and a first friction material segment bonding mechanism are sequentially arranged at a predetermined interval from the left end toward the right end.
A ₁ , reversing mechanism R, second adhesive application mechanism C ₂ , second
It is equipped with a friction material segment adhesion mechanism A ₂ , a pressure mechanism P, an inspection mechanism I, and an unloading mechanism U for taking out the friction plate.

Further, at the left end of the main conveyor 5, a first conveyor ₆₁ for transporting the core board 2 for transporting the core board 2 to the location where the loading mechanism L is disposed is arranged parallel to the main conveyor 5, and at the right end of the main conveyor 5, A second friction plate transfer conveyor 6 that transfers the friction plate 1 taken out by the unloading mechanism U.
₂ is arranged parallel to the main conveyor 5.

During the manufacturing work of the friction plate 1, the transfer surface of the main conveyor 5 is constantly moving from the left end to the right end in FIG. 4, and the core plate 2 (or friction plate 1) is transferred onto the transfer surface of the main conveyor 5. A plurality of transfer tables 7 are placed thereon.

As clearly shown in FIG. 5, each transfer table 7 has a substantially rectangular shape in plan, and its transfer is guided by a pair of guide members 8 located on both sides of the main conveyor 5 in the moving direction. Inward projecting edges 8a of both guide members 8;
Both outward projecting edges 7 of the transfer platform 7 below them
A predetermined gap _g1 is formed between the transfer table 7 and the transfer table 7 so as not to hinder the transfer of the transfer table 7.

Each transfer table 7 has the same configuration, including a large-diameter hole 9a that opens upward, a medium-diameter hole 9b that opens downward, and a small-diameter hole 9c that communicates them.
It is equipped with A disc-shaped core plate support 10 is rotatably fitted into the large diameter hole 9a, and a protruding shaft 11 on the lower surface of the support 10 is rotatably attached to a bearing member 12 defining the small diameter hole 9c. mated to. Half body 13 constituting the friction clutch 13 in the medium diameter hole 9b
₁ is accommodated, and a screw shaft 14 protruding from the upper surface thereof.
is screwed onto the protruding shaft 11. A spring 15 is compressed between the half body 13 ₁ and the ceiling surface of the medium diameter hole 9b, and the elastic force of the spring 15 urges the half body 13 ₁ downward, so that the half body 13 ₁ is connected to the ceiling surface. A predetermined gap _g2 is formed between the upper surface and the upper surface.

As shown in FIG. 6, the support base 10 includes a recess 16 that opens upward and fits into the core plate 2, and a recess 16 that is located on the outer peripheral surface of the core plate 2 at a position opposite to the inner peripheral surface of the recess 16. Two protrusions 17 are formed having engagement recesses 17a that fit into two of the plurality of engagement protrusions 2a, and the core plate 2 is positioned with respect to the support base 10 by the engagement of the protrusions and recesses. Ru.

Below the main conveyor 5, the first and second
At each location of the adhesive application mechanisms C ₁ , C ₂ and the first and second friction material segment adhesive mechanisms A ₁ , A ₂ , there is a fixing mechanism for the transfer table 7 used for the application and adhesive operations, and A lifting and rotating mechanism for the support base 10 is provided.

The fixing mechanism includes a stop pin 18 (FIG. 4) that projects into the transfer path and stops the transfer table 7 when the transfer table 7 is transferred to each corresponding position, and a stop pin 18 (FIG. 4) that stops the transfer table 7.
When the conveyor stops, the piston rod 19 is extended to raise the transfer table 7 from above the main conveyor 5,
It has an operating cylinder 20 that causes both outward projecting edges 7a to abut against inward projecting edges 8a of both guide members 8, respectively. The operating cylinders 20 are erected on the upper surface of the support plate 21 below the four corners of the transfer table 7 .

The lift-rotation mechanism is constructed as follows.

At the upper end, a half body 13 forming a friction clutch 13
A spline shaft ₂₂ having a spline shaft 22 is arranged so that its half body 13 ₂ can face the half body 13 ₁ of the transfer table 7, and a spline cylinder 23 that meshes with the spline shaft 22 is fixed to the support plate 21. The support tube 24 is supported by bearings 25 ₁ and 25 ₂ . A roller 26 is fixed to the lower end of the spline shaft 22 that protrudes downward from the spline cylinder 23.
The transmission body 27 is mounted to allow rotation of the transmission body 27. A bell crank 30 is swingably supported by a fixed bracket 28 via a support shaft 29 in the vicinity of the transmission body 27, and a roller 31 provided at the tip of a horizontal arm 30a of the bell crank 30 moves the transmission body 27. The lower end of the vertical arm 30b of the bell crank 30 engages with _the notch-like engagement groove _27a cut from the side in
3 ₁ and 33 ₂ are connected via a common pin 34.

Therefore, when the lifting solenoid 32 ₁ is activated and its actuator 33 ₁ is sucked, the bell crank 3
0 swings clockwise in FIG. 5 around the spindle 34,
The spline shaft 22 rises and both halves 13 ₁ , 13 ₂
collide. And the support stand 10 resists the spring 15.
is raised by a height corresponding to the gap _g2 , and the core plate 2 is held at a predetermined height with respect to both adhesive application mechanisms _C1 , _C2 and both friction material segment bonding mechanisms _A1 , _A2 . . Swinging of the bell crank 30 is allowed by the play of the actuators 33 ₁ and 33 ₂ with respect to the solenoid body.

An electric motor 35 is attached to the lower surface of the support plate 21 near the support tube 24, and the support plate 21
A drive gear 37 is fixed to the upper end of a drive shaft 36 that passes through. The drive gear 37 and the spline cylinder 2
A toothed timing belt 39 is suspended between a driven gear 38 and a driven gear 38 fixed to the outer peripheral surface of the upper end of the timing belt 3.

As a result, when the two halves 13 ₁ and 13 ₂ abut each other and the electric motor 35 is operated with the friction clutch 13 connected, the drive gear 37, timing belt 39, driven gear 38 and spline cylinder 2
3, the splined shaft 22 and thus the support base 10 and the core plate 2 rotate.

The electric motor 35 located at the location where both the adhesive application mechanisms C ₁ and C ₂ are arranged continuously rotates so that the core plate 2 rotates once, and also operates at the location where both the friction material segment adhesive application mechanisms C 1 and C 2 are installed.
The electric motors 35 located at the locations A ₁ and A ₂ rotate intermittently every time the friction material segments are bonded.

At each location of the loading mechanism L, reversing mechanism R, pressurizing mechanism P, inspection mechanism I, and unloading mechanism U, the fixing mechanism and the electric motor 3 are provided.
A lifting mechanism excluding rotating members such as No. 5 is installed respectively.

The loading mechanism L includes a swinging arm 40 ₁ that can be raised and lowered to swing back and forth between the main conveyor 5 and _the first conveyor 6 ₁ . Collection chuck 41 that can be engaged and disengaged
₁ is provided. The unloading mechanism U is constructed in the same manner as the loading mechanism L, and therefore includes a swing arm ₄₀₂ and a collection chuck ₄₁₂ .

The first and second adhesive application mechanisms C ₁ and C ₂ have the same configuration, and as shown in FIG.
A fixed brush 43 is attached to the lower end _of the brush 43, and the adhesive is supplied to the hollow shaft 42 from the first supply pipe ₄₃₁ , and pressurized air for pumping the adhesive is supplied from the second supply pipe 432. It's summery.

First and second friction material segment adhesion mechanisms A ₁ , A ₂
have the same configuration, and above the core plate 2, there are a plurality of friction materials arranged at equal intervals along the circumferential direction of the core plate 2, in the example shown, two friction materials at two feeding positions D ₁ and D ₂ . The tape 44 is fed out in an amount corresponding to one friction material segment 3, one friction material segment 3 is cut out from each friction material tape 44, and they are pressed and bonded to the adhesive surfaces a and b of the core plate 2. It's summery. Details of both mechanisms A ₁ and A ₂ will be described later.

After the friction material segments 3 have been bonded to one adhesive surface a, the reversing mechanism R engages with the outer circumferential surface of the core plate 2 to lift and reverse the core plate 2, so that the other adhesive surface b faces upward. For this purpose, it is provided with a pair of hands 45 that can be moved up and down and rotated.

The pressurizing mechanism P simultaneously applies a pressing force to all the friction material segments 3 bonded to both bonding surfaces a and b of the core plate 2, and causes the friction material segments 3 to bond to both bonding surfaces a and b of the core plate 2. This will ensure reliable adhesion.

The inspection mechanism I is configured to photoelectrically detect whether a predetermined number of friction material segments 3 are bonded to both adhesive surfaces a and b of the core plate 2.

Next, the manufacturing operation of the friction plate 1 using the above-mentioned apparatus will be explained.

Before the start of the manufacturing operation, the core plates 2 are stacked in a cylindrical shape on the first conveyor 6 ₁ with one adhesive surface a facing upward, and are transferred to a transfer end near the loading mechanism L.

The main conveyor 5 is operated, and the transfer table 7 is placed on the main conveyor 5 at its left end. When the transfer table 7 reaches the installation position of the loading mechanism L, the transfer table 7 is stopped by the protrusion of the stop pin 18, and then the piston rod 19 of the actuating cylinder 20 is extended to raise the transfer table 7 above the main conveyor 5. and fix it.

Thereafter, the support base 10 is raised via the spline shaft 22 and the like by actuation of the lifting solenoid 32 ₁ .

Due to the operation of the loading mechanism L, the swinging arm 40 ₁
but descending to the first conveyor 6 ₁ , the first conveyor 6 ₁
Upper core plate 2 grips, rises, main conveyor 5
The operations of upward swinging, lowering, and release of the core plate 2 are performed, thereby causing the core plate 2 to be attached to one adhesive surface a.
Fit into the recess 16 of the support base 10 and position it facing upward.

The lowering solenoid 32 ₁ is operated to lower the spline shaft 22 and the support base 10 is lowered by the spring 15 .
Then, the piston rod 19 of the operating cylinder 20 is contracted and the stop pin 18 is lowered, and the transfer table 7 is transferred to the main conveyor 5 again.
Place it on top and transport it.

When the transfer table 7 reaches the position where the first adhesive application mechanism _C1 is installed, the transfer table 7 is raised and fixed in the same manner as described above.
Subsequently, the support base 10 is raised to bring the adhesive surface a of the core plate 2 into contact with the brush 43.

The electric motor 35 is operated to continuously rotate, the support base 10 is rotated, and the adhesive is applied to the adhesive surface a of the core plate 2.

In the same manner as described above, the transfer table 7 is again placed on the main conveyor 5 and transferred.

The transfer table 7 is the first friction material segment adhesion mechanism A ₁
When the position is reached, the transfer table 7 is raised and fixed, and then the support table 10 is raised in the same manner as described above.

Each friction material tape 44 is fed out in an amount corresponding to one friction material segment 3 to two feeding positions D ₁ and D ₂ above the core plate 2, and each friction material tape 44 is cut to form a friction material segment. 3 are obtained, and the friction material segments 3 are pressure-bonded to the adhesive surface a of the core plate 2.

Thereafter, each friction material tape 44 is fed out by an amount corresponding to the next friction material segment 3, and the electric motor 35 is operated to intermittently rotate in order to adhere the friction material segment 3 to the support base 10 and the core plate 2. Rotate.

By sequentially repeating the above-mentioned feeding, cutting, pressure bonding, and intermittent rotation operations, a large number of friction material segments 3 are attached to one adhesive surface a, as shown in FIG.
Glue the two sheets together. Details of the adhesion work of the friction material segments 3 will be described later.

In the same manner as described above, the transfer table 7 is again placed on the main conveyor 5 and transferred.

When the transfer table 7 reaches the position where the reversing mechanism R is installed, the transfer table 7 is raised and fixed in the same manner as described above, and then the support table 10 is raised, and the core plate 2 is reversed by the reversing mechanism R and the other side is moved. with the adhesive side b facing upward.

Next, in the same manner as described above, the second adhesive application mechanism _C2 applies adhesive, and the second friction material segment adhesive mechanism
A friction plate 1 is obtained by bonding a large number of friction material segments 3 according to _A2 .

Thereafter, the transfer table 7 is transferred to the position where the pressurizing mechanism P is installed, a pressing force is applied to all the friction material segments 3 at the same time to ensure that they are bonded to the core plate 2, and then the transfer table 7 is transferred to the inspection mechanism I. and inspects whether a predetermined number of friction material segments 3 are adhered to the core plate 2. At the positions where the pressure mechanism P and the inspection mechanism I are arranged, the transfer table 7 is raised and fixed, and then the support table 10 is raised, in the same manner as described above.

When the transfer table 7 is raised and fixed at the unloading mechanism U, and the support table 10 is then raised, the swinging arm 40 ₂ is lowered to the main conveyor 5 and the support table 10 is moved by the operation of the mechanism U. Upper friction plate 1 grips, rises, second conveyor 6 ₂ swings upward,
The operations of lowering and releasing the friction plate 1 are performed, thereby placing the friction plate 1 on the transfer starting end of the second conveyor ₆₂ . The friction plate 1 transported by the second conveyor 6 ₂ is subjected to an adhesive drying process.

In this way, the production of the friction plate 1 takes place automatically and continuously.

Next, according to FIGS. 4, 5, 8, and 9,
The second friction material segment adhesion mechanisms A ₁ and A ₂ will be explained. As mentioned above, since both mechanisms A ₁ and A ₂ have the same configuration, the first friction material segment adhesion mechanism
Let's talk about _A1 .

The friction material tape 44 is obtained by slitting a friction material sheet, and a pair of reels 46 wound with the friction material tape 44 are arranged on both sides of the main conveyor 5, and each friction material tape 4
A guide tube 48 equipped with a through hole 47 through which 4 is inserted.
(FIG. 5) is arranged above the main conveyor 5 so as to guide the leading end of the friction material tape 44 to each delivery position D ₁ , D ₂ .

Between each reel 46 and the corresponding guide cylinder 48, a friction material tape 4 is placed at each feeding position _D1 , _D2.
A feeding member 49 that intermittently feeds out an amount corresponding to one friction material segment 3 is provided.

The feeding member 49 is constructed as follows.

As shown in FIGS. 5 and 8, the friction material tape 44
A third rotation shaft 51 ₃ is rotatably supported by the machine frame 50 below the third rotation shaft 51 ₃ .
A pair of guide plates 52 are fixed to the upper portion of the outer circumferential portion for guiding the friction material tape 44 therebetween.

A friction material tape 44 is placed directly above the third rotating shaft 51 ₃ .
A presser roller 53 that slides is provided, and the length of the presser roller 53 in the axial direction is formed to be slightly shorter than the distance between the guide plates 52 . Between both guide plates 52, at a position off the axis of the third rotating shaft ₅₁₃ ,
A small-diameter short cylindrical friction body 54 made of rubber or the like is installed in a non-rotatable manner. 55 is a spacer between both guide plates 52.

In the above configuration, the friction body 54 moves in a circle around the third rotating shaft ₅₁₃ below the friction material tape 44,
Only when the friction body 54 rubs against the lower surface of the friction material tape 44, the friction material tape 44 is fed out as described above in cooperation with the upper pressing roller 53. 56 is a pair of guide rollers, 57 in FIG.
is a tension roller.

A pressing member 58 that cuts out friction material segments 3 from the friction material tape 44 and presses and adheres them to the core plate 2 is disposed near each guide tube 48 and is movable up and down.

As clearly shown in FIG. 9, the pressing member 58 is supported by a guide member (not shown) so as to be able to move up and down.
A member main body 59 whose lower end surface is a pressing surface 59a, and a cutting blade 61 existing on the pressing surface 59a side that is slidably engaged with a downward hole 60 of the member main body 59 on the rear side of the pressing surface 59a in the friction material tape feeding direction. Stopper 6 superimposed and fixed on the cutting blade 61
2.

A spring 63 is compressed between the upper end surface of the stopper 62 and the ceiling surface of the downward hole 60, and the elastic force of the spring 63 causes the protrusion 62a on the side surface of the stopper 62 to move below the opening 64 of the member body 59 before the cutting operation. The cutting edge 61a of the cutting blade 61a is on the pressing surface 59 by colliding with the edge.
It is held substantially on the same plane as a. The inclined lower end surface 62b of the stopper 62 is located above the cutting edge 61a, and after the friction material tape 44 is cut by the cutting blade 61, it abuts against the inclined surface 48a of the guide tube 48. The cutting blade 61 is configured not to descend any further.

A suction hole 65 that opens on the pressing surface 59a is formed in the member body 59, and a vacuum source (not shown) is connected to the suction hole 65. This allows the friction material sheet 44 to be removed before being cut by the cutting blade 61.
The part corresponding to the friction material segment 3 is the pressing surface 5.
9a so that it can be adsorbed.

Next, the operating mechanism M ₁ of the feeding member 49 and the elevating mechanism M ₂ of the pressing member 58 will be explained.

Both mechanisms M ₁ and M ₂ are operated by an electric motor 66 that is a common power source. The drive shaft of the electric motor 66 is connected to a drive pulley 67 via a reducer (not shown) or the like.
The driving pulley 67 is connected to the first rotating shaft 5.
1 ₁ is connected via a belt 69 to a driven pulley 68 .

A first bevel gear 70 ₁ is fixed to the upper end of the first rotating shaft 51 ₁ , and a second rotating shaft 51 ₂ is attached to the first bevel gear 70 ₁ .
A second bevel gear 70 2 fixed to the second bevel gear 70 ₂ meshes with the second bevel gear 70 2 . Second
A pulley 71 fixed to the rotating shaft 51 ₂ and a pulley 7 fixed to the third rotating shaft 51 ₃ of the feeding member 49
A belt 73 is suspended between the two.

The electric motor 66, driving and driven pulley 6
7, 68, first to third rotating shafts 51 ₁ to 51 ₃ , first and second bevel gears 70 ₁ , 70 ₂ , pulleys 71, 7
2. The belt 73 is the operating mechanism M ₁ of the feeding member 49
Configure.

Further, a third bevel gear 70 ₃ fixed to a fourth rotating shaft 51 ₄ meshes with the first bevel gear 70 1 , and a pulley fixed to a fifth rotating shaft 51 ₅ interlocked with the fourth rotating shaft 51 ₄ meshes with the first bevel gear 70 _{1 .} A belt 76 is suspended between the pulley 74 and a pulley 75 fixed to the sixth rotating shaft ₅₁₆ .

As clearly shown in FIG. 9, a disk portion 77 is provided at one end of the sixth rotating shaft ₅₁₆ , and a position off the center of the disk portion 77 and the member body 59 of the pressing member 58 are provided.
are connected via a link 78. link 78
The cylindrical portion 79 on the disk portion 77 side, the rod portion 80 on the member main body 59 side that is slid together with the cylindrical portion 79, and the cylindrical portion 79
A spring 81 is compressed between the ceiling surface and the upper end surface of the rod-shaped portion 80 , and a spring 81 is fixed to the cylindrical portion 79 to form the rod-shaped portion 80 .
The stopper pin 83 extends through a long hole 82 extending in the axial direction. The stopper pin 83 is engaged with the upper inner surface of the elongated hole 82 except when the friction material segment 3 is pressed and bonded.

The electric motor 66, driving and driven pulley 6
7, 68, belt 69, first, fourth to sixth rotating shafts 51 ₁ , 51 ₄ to 51 ₆ , first and third bevel gears 70 ₁ ,
70 ₃ , pulleys 74, 75, belt 76 and link 78 constitute a lifting mechanism M ₂ for the pressing member 58,
5th rotating shaft 51 ₅ , 1 clockwise in Figure 9
The rotation causes the pressing member 58 to move up and down once.

When the pressing member 58 is lowered, even after the pressing surface 59a thereof overlaps the adhesive surface a of the core plate 2 via the friction material segment 3, the disk is arranged so that a force in the direction of lowering the pressing member 58 acts on the pressing member 58. Part 77 and link 7
The connection position with 8 has been determined.

Next, the operation of the first friction material segment adhesion mechanism _A1 will be explained with reference to FIGS. 5 and 9.

In FIGS. 5 and 9 I, the friction material sheet 44 is transferred to one friction material segment 3 by the feeding member 49.
, and the pressing member 58 is in the raised position.

As shown in FIG. 9, when the sixth rotating shaft ₅₁₆ rotates clockwise, the pressing member 58 starts descending, and the pressing surface 59a hits the portion of the friction material tape 44 corresponding to the friction material segment 3. When you come into contact with
Due to the suction action of the suction hole 65, the pressing surface 5
It is adsorbed by 9a.

As shown in FIG. 9, as the pressing member 58 continues to descend, the friction material tape 44 is cut by the cutting blade 61, resulting in the friction material segment 3.
is attracted to the pressing surface 59a of the pressing member 58.

As shown in FIG. 9, as the pressing member 58 continues to descend, its pressing surface 59a overlaps the adhesive surface a of the core plate 2 via the friction material segments 3, and after this overlapping, it is lowered to the pressing member 58. A force is applied in the direction of causing the link 78 to move, but this force is absorbed by the compression of the spring 81 of the link 78.

Thereby, a large pressing force can be obtained and the friction material segments 3 can be reliably bonded to the bonding surface a of the core plate 2.

As shown in FIGS. 5 and 9, the pressing member 58 returns to the raised position by the subsequent rotation of the sixth rotating shaft ₅₁₆ , and during the raising process, the support base 10 rotates intermittently, and the feeding member 49 causes friction. The body 54 rubs against the lower surface of the friction material tape 44, and the tape 44 is fed out to prepare for the next bonding operation.

In addition, in order to efficiently manufacture the friction plate 1 in a shorter time, each friction material segment adhesion mechanism A ₁ ,
The number of feeding positions of the friction material tape 44 in _A2 ,
Therefore, the number of friction material tapes 44 to be supplied is changed as appropriate depending on the diameter of the core plate 2.

C. Effects of the Invention According to the manufacturing method of the present invention, friction material segments are obtained from a plurality of friction material tapes and these friction material segments are bonded to the core plate. Accordingly, it is possible to obtain a friction plate for a clutch having an oil groove having the same depth as the thickness of the friction material. Furthermore, since it can be easily applied to the manufacture of friction plates of various sizes, it is possible to improve economical efficiency together with the improvement in yield. Furthermore, since multiple friction material segments are bonded to the core plate in a single pressure bonding process,
It is possible to shorten the time required for adhering friction material segments and improve the manufacturing efficiency of friction plates for clutches.

Further, according to the manufacturing apparatus of the present invention, the operation of feeding out each friction material tape, the operation of cutting each friction material tape to obtain friction material segments, and the operation of adhering the obtained plurality of friction material segments to a core plate are performed. Friction plates for clutches can be manufactured efficiently by repeating the operation reliably.

[Brief explanation of drawings]

Figures 1 to 3 show the friction plate, Figure 1 is a plan view of the whole, Figures 2 and 3 are Figures 1-,-
4 is a plan view of the manufacturing equipment, FIG. 5 is a longitudinal sectional front view of the friction material segment adhesion mechanism, and FIG. 6 is a line sectional view.
The figure is an explanatory diagram showing the bonding work of friction material segments to the core plate, FIG. 7 is a perspective view of the adhesive application mechanism,
FIG. 8 is a cross-sectional view taken along the line of FIG. 5, and FIG. 9 is an explanatory diagram of the structure and operation of the pressing member. a, b...adhesive surface, _D1 , _D2 ...feeding position,
DESCRIPTION OF SYMBOLS 1... Friction plate, 2... Core plate, 3... Friction material segment, 4... Oil groove, 10... Support stand, 44... Friction material tape, 49... Feeding member, 58... Pressing member.

Claims (1)

[Scope of Claims] 1. A friction plate for a clutch in which a large number of friction material segments are arranged on the adhesive surface of an annular core plate along the circumferential direction of the core plate with oil grooves between adjacent ones. A method for manufacturing, comprising: positioning the core plate with the adhesive surface coated with adhesive facing upward; above the core plate, at regular intervals along the circumferential direction of the core plate; a step of feeding out a plurality of friction material tapes corresponding to one friction material segment to a plurality of aligned feeding positions; cutting each of the friction material tapes to obtain a plurality of friction material segments; bonding each friction material segment to the adhesion surface of the core plate; feeding out each friction material tape by an amount corresponding to the next friction material segment, and bonding the core plate to the friction material segment; A method of manufacturing a friction plate for a clutch, characterized by using a rotating step; 2. An apparatus for manufacturing a friction plate for a clutch in which a large number of friction material segments are bonded to the bonding surface of an annular core plate along the circumferential direction of the core plate with oil grooves between adjacent ones. The core plate is positioned with the adhesive surface coated with adhesive facing upward, and a support table rotates intermittently every time the friction material segment is bonded; A plurality of feeding members that intermittently feed out a plurality of friction material tapes corresponding to one friction material segment at a plurality of feeding positions arranged at equal intervals along the circumferential direction, and cutting each of the friction material tapes. Processed,
A manufacturing apparatus for a friction plate for a clutch, comprising a plurality of press members that can be moved up and down to press and bond the obtained plurality of friction material segments to the core plate.