JPS63210137A - Process and apparatus for producing clutch friction disc - Google Patents

Abstract

PURPOSE:To obtain inexpensively the title friction disc having oil grooves as deep as the thickness of the friction material and being high in the yield of friction material, by bonding a plurality of friction material segments obtained by performing multi-row punching of a friction tape of a specified width to a core plate. CONSTITUTION:A core plate 2 with its bonding face 2a being directed upward is transferred from a first conveyor 61 to a turntable 5 by a loading/unloading mechanism L and this turntable is rotated. An adhesive is applied to the bonding face 2a by a first adhesive application mechanism C1 to bond a friction material segment 3 obtained by feeding a friction material tape 24 to the upper part of the core plate 2 and performing its multi-row punching to the plate by a first friction material segment bonding mechanism A1. After rotating the core plate 2, said operation is repeated. After the core plate 2 is reversed by a reversing mechanism R to turn the other bonding face (b) upward, an adhesive is applied, like the above, to this face (b) by a second adhesive application mechanism C2 and a plurality of segments 3 are bonded to this face by a second friction material segment bonding mechanism A2 of segments 3 on both of the bonding faces 2a and 2b of the core plate 2 and oil grooves 4 as deep as its thickness.

Description

DETAILED DESCRIPTION OF THE INVENTION A0 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 apparatus 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, and then the fixed length 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 using a mold to obtain a large number of oil grooves.

(3) Problems to be Solved by the Invention However, when the above-mentioned punching process is employed, the yield of the friction material is low at 20 to 40%, which is disadvantageous in terms of economy.

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, if the oil groove is obtained by molding, a mold must be provided according to the size of the friction plate, which is extremely uneconomical. There are also issues like this.

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 and obtain oil grooves having the same depth as the thickness of the friction material. The purpose is to provide.

B0 Structure of the Invention (1) Means for Solving the 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 ones. A method of 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 an adhesive facing upward; a step of feeding a friction material tape having a width corresponding to the plurality of friction material segments existing in areas equally divided on the circumference above the core plate; performing a multi-row punching process on the friction material tape; obtaining a plurality of the friction material segments and press-bonding the friction material segments to the bonding surface of the core plate; for the next friction material segment bonding operation, the friction material tape is fed out and the It is characterized by using the steps of: rotating the core plate;

The present invention also provides 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 segments. the core plate is positioned with the adhesive surface coated with an adhesive facing upward; and a support base that rotates intermittently each time the friction material segments are bonded; and a circumference of the core plate. a feeding member that feeds out a friction material tape having a width corresponding to the plurality of friction material segments existing in the equally divided area above the support base; and performing a multi-row punching process on the friction material tape; The present invention is characterized by comprising a pressing member that can be moved up and down to press and bond the obtained plurality of friction material segments to the core plate.

(2) Effect According to the manufacturing method described above, a friction material tape having a specific width is subjected to multi-row punching to obtain a plurality of friction material segments, and these are bonded to the core plate, so that the yield of the friction material is reduced. Furthermore, it is possible to obtain a friction plate for a clutch which is provided with oil grooves having the same depth as the thickness of the friction material between adjacent friction material segments. Furthermore, since it can be easily applied to the production of friction plates of various sizes, it is possible to improve economical efficiency together with the improvement in yield. Furthermore, since a plurality of friction material segments are bonded in one bonding operation, the number of bonding steps can be reduced and the manufacturing efficiency of the friction plate can be improved.

According to the manufacturing apparatus, the operations include feeding out a friction material tape, performing multi-row punching on the friction material tape to obtain a plurality of friction material segments, and temporarily adhering the obtained plurality of friction material segments. A friction plate for a clutch can be manufactured efficiently by repeating the operation reliably.

(3) Embodiment Figures 1 to 3 show a friction plate 1 for a clutch, which includes six annular plates 2 and their adhesive surfaces 2a and 2b.
A large number of friction material segments 3 (in the illustrated example, 36 friction material segments per surface) are bonded along the circumferential direction, and there is a depth between adjacent friction material segments 3 that is the same as the thickness t of the friction material segments 3. An oil groove 4 having a certain temperature is formed.

FIG. 4 shows an automatic manufacturing device for the clutch friction plate 1, which is arranged around a turntable 5 that rotates intermittently at 45° clockwise at intervals of 45° along the rotational direction of the turntable 5. The loading/unloading mechanism for supplying the core plate and taking out the friction plate is arranged sequentially.
Adhesive application mechanism CI, first friction material segment adhesion mechanism A
l, reversing mechanism R1 second adhesive application mechanism C2, second friction material segment adhesion mechanism Az, pressure mechanism P and inspection mechanism ■
It is equipped with

First conveyor belts for transporting the core board are set on both sides of the loading/unloading mechanism, with the transport direction set in the same direction6. and a second conveyor 6□ for transferring friction plates are arranged in the tangential direction of the turntable 5.

As shown in FIG. 6, the turntable 5 has eight core plate positioning supports 7 arranged at intervals of 456 along the circumferential direction on its outer periphery, and the area around each support stand 7 is as follows. The system is configured as described in .

That is, the support stand 7 is rotatably supported by a flanged holding cylinder 8 fixed to the turntable 5 via a bearing 9. The support base 7 includes an annular mounting plate 10 exposed on the upper surface of the turntable 5 and a hollow cylinder 11 that passes through the holding cylinder 8 and has a lower end protruding from the holding cylinder 8. In the vicinity of the holding cylinder 8, an electric motor m is attached to the lower surface of the turntable 5, a driving gear g1 fixed to the drive shaft 12 of the electric motor m, and a driven gear fixed to the outer peripheral surface of the lower end of the hollow cylinder 11. A toothed timing heald b is suspended between g2 and g2. The electric motor m operates intermittently during the adhesion work of the friction material segments 3, and rotates the support base 7 by 90 degrees counterclockwise in FIG.

A plurality of sliding grooves 13 opening upward, inwardly, and outwardly are formed on the mounting plate 10 at equal intervals on the circumference, and a slider 14 is slid into each sliding groove 13 . An operating rod 15 is attached to the hollow cylindrical body 11.
are slid together so that they can move vertically, and the operating rod 1
The tip of the actuating rod 15 is located below each slider 14 in its upward movement position, and the tip of the actuating rod 15 and each slider 14 are connected via a link 16.

A spring 18. is contracted so that a slider 19 protruding from the lower end surface of the enlarged diameter portion 17 slides on the upper surface of an annular cam plate 20 disposed below the turntable 5 and along its outer periphery. . The cam plate 20 has a high part 20a forming a chevron shape and a low part 20b serving as a hem of the high part 20a. From the middle part with the second adhesive application mechanism C2, and from the middle part between the inspection mechanism I and the loading/unloading mechanism to the middle part between the loading/unloading mechanism and the first adhesive application mechanism 01 A high part 20a is provided between each of the low parts 2Ob and
will be placed.

As a result, in the upward movement position of the actuating rod 15 where the slider 19 is located on the high portion 20a of the cam plate 20, each slider 14 slides outward in the radial direction of the mounting plate 10, and The engaging stepped portion 14a on the top surface of each slider 14 engages with the inner peripheral surface of the stone plate 2 to position the core plate 2, while the slider 19 is located on the lower portion 20b of the cam plate 20. At the lower movement position 15, each slider 14 slides inward in the radial direction of the mounting plate 10, and the engagement stepped portion 14a on the upper surface of each slider 14 separates from the inner circumferential surface of the stone plate 2, thereby positioning the core plate 2. is canceled.

The loading/unloading mechanism includes three spider-shaped rotating arms 2L to 21. which can be raised and lowered and rotated intermittently toward 1206 in the clockwise direction in FIG. A collet chuck 2 is provided at the tip of each rotary arm 21+ to 213.
2 are provided. Full rotation arm 21+~21. For example, when the collet chuck 22 of one rotary arm 21+ is located above the transfer end of the first conveyor 6 when the rotation of the rotary arm 21+ is stopped, the collet chuck 22 of the other rotary arm 212 is placed on the support base of the turntable 5. 7 above, and the collet chuck 22 of another rotating arm 213
are located above the transfer starting end of the second conveyor 62.

1st. The second adhesive application mechanisms CI and Cm have the same configuration, and the disc-shaped silicone pad 23 for applying adhesive to the core plate 2 is lowered at a position retreated from the turntable 5, thereby causing the silicone pad 23 to be lowered. The adhesive is applied to the core plate 2, and then the silicone pad 23 is raised, then advanced toward the turntable 5, and further lowered to apply the adhesive to the core plate 2.

1st. The second friction material segment adhesion mechanisms A, A2 have the same configuration, and the core plate 2 is equally divided on the circumference. Nine friction material segments 3 are obtained from a friction material tape 24 having a width corresponding to the material segments 3 by multi-row punching, and these are pressure bonded to the adhesive surface 2a of the core plate 2. Details of both mechanisms A + and A z will be described later. In the vicinity of both friction material segment adhesion mechanisms A+ and Az, the waste material after the multi-row punching process is wound up in the first. 2nd winder W
t, Wz are arranged.

The reversing mechanism R has a function of lifting and reversing the core plate 2 after the adhesion of the friction material segments 3 to one adhesive surface 2a and directing the other adhesive surface 2b upward; It has a pair of rotatable hands 25.

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

The inspection mechanism I is configured to photoelectrically detect whether or not the 36 friction material segments 3 are adhered to each of the adhesive surfaces 2a and 2b 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 and transferred onto the first conveyor 6 with one adhesive surface 2a facing upward. The turntable 5 is stopped, one support stand 7 is in the loading/unloading mechanism position, and the operating rod 15 is in the lowering position.

Furthermore, each rotating arm 21. ~213 is in the raised position.

The loading/unloading mechanism is a rotary arm 21. ~21. , one core plate 2 is horizontally clamped by the collet chuck 22 of one rotating arm 211 , the rotating arms 21 + to 213 rise and then rotate 120°, and the rotating arms 21 . - 213 is lowered, the core plate 2 is released from the grip by the collet chuck 22 of the rotary arm 211, and the rotary arms 211 to 213 are raised. As a result, the core plate 2 is turned with its adhesive surface 2a facing upward. It is placed on the mounting plate 10 of the support stand 7 in this state.

The turntable 5 is rotated by 45 degrees and the core plate 2 is transferred to the position of the first adhesive application mechanism 01. During this transfer, the actuating rod 15 is moved to the upward movement position by the cam plate 20, so that the core plate 2 is positioned on the mounting plate 10 by each slider 14. Then, adhesive is applied to the adhesive surface 2a of the core plate 2 by the first adhesive application mechanism C8.

The turntable 5 is rotated 45" to transfer the core plate 2 to the position of the first friction material segment bonding mechanism A1. Then, as shown in FIG. 5, a friction material tape 24 is placed above the core plate 2.
The friction material tape 24 is fed out as much as necessary for the multi-row punching process, and the friction material tape 24 is subjected to the multi-row punching process to obtain nine friction material segments 3, and these friction material segments 3 are attached to the adhesive surface 2a of the core plate 2. Adhere by pressure. 24a indicates a punched hole.

After that, the friction tape 24 is fed out for the next adhesion work of the friction material segments 3, and the core plate 5 is attached to the support base 7 by 90 degrees.
Rotate 6 times.

The above-mentioned feeding, multi-row cutting, pressure bonding, and rotation operations are repeated in sequence to bond nine of the 36 friction material segments 3 to one bonding surface 2a.

Details of the adhesion work of the friction material segments 3 will be described later. The waste material of the friction material tape 24 from which the friction material segments 3 have been punched out is wound up in the first winder W.

The turntable 5 is rotated 45'' to transfer the core plate 2 to the position of the reversing mechanism R. During this transfer, the actuating rod 15 is moved to the lower position by the cam plate 20, so that each slider 14
The positioning of the core plate 2 is released. The core plate 2 is reversed by the reversing mechanism R, and the other adhesive surface 2b is directed upward.

The turntable 5 is rotated by 45 degrees and the core plate 2 is transferred to the position of the second adhesive application mechanism 02. During this transfer, the actuating rod 15 is moved by the cam plate 20 into the upward movement position, so that the core plate 2 is repositioned on the carrier plate 10 by each slider 14. Then, the core plate 2 is applied by the second adhesive application mechanism 02.
Apply adhesive to the adhesive surface 2b.

The turntable 5 is rotated by 45 degrees, the core plate 2 is moved to the position of the second friction material segment adhesion mechanism A2, and 36 friction material segments 3 are adhered to the adhesive surface 2b of the core plate 2 in the same manner as described above. Obtain plate 1.

The turntable 5 is rotated by 45 degrees to transfer the friction plate 1 to the position of the pressurizing mechanism P, and a pressing force is simultaneously applied to all the friction material segments 3 to reliably adhere them to the core plate 2.

The turntable 5 is rotated by 45 degrees, the friction plate 1 is transferred to the position of the inspection mechanism (2), and it is inspected whether or not 36 friction material segments 3 per surface are adhered to the core plate 2.

The turntable 5 is rotated 456 times to transfer the friction plate 1 to the position of the loading/unloading mechanism. During this transfer, the actuating rod 15 is moved to the downward movement position by the cam plate 20, so that the positioning of the friction plate 1 by each slider 14 is released.

After the first core plate 2 is fed onto the support base 7, the loading/unloading mechanism rotates the turntable 5 every 45° intermittently until the friction plate 1 reaches the inspection mechanism (2). A similar core board supply operation was repeated six times.

In this case, in order to feed the core board 2 one by one, the push-up mechanism for keeping the uppermost core board 2 at the same height position is connected to the first conveyor 6.
1 transfer end.

When the friction plate 1 is transferred to the position of the loading/unloading mechanism as described above, one rotating arm 21. is located above the support base 7, so that the loading/unloading mechanism is connected to the rotating arm 21. ~
Lowering of 213, one rotating arm 21. The friction plate 1 is horizontally clamped by the collet chuck 22 of the rotating arm 21 □, and the core plate 2 is horizontally clamped by the collet chuck 22 of the rotating arm 21 □. ~120° following a rise of 213
Rotation, lowering of rotating arms 21+ to 213, rotating arm 2
The friction plate 1 is clamped and released by the collet chuck 22 of the rotary arm 21 □, and the core plate 2 is clamped and released by the collet chuck 22 of the rotary arm 21 □. ~21. Each lifting operation is performed in sequence, whereby the friction plate 1 is placed on the transfer starting end of the second conveyor 6□, and the core plate 2 is placed on the support stand 7. Friction plate 1 transported by second conveyor 6□
is subjected to adhesive drying treatment.

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

Next, the fourth. 6th. The first and second friction material segment adhesion mechanisms A+ and A2 will be explained with reference to FIGS. 6A and 7. As mentioned above, since both mechanisms A+ and At have the same configuration, the first friction material segment adhesion mechanism A will be described.

The friction material tape 24 is obtained by slitting a friction material sheet, and a loop 26 around which the friction material tape 24 is wound is disposed near the turntable 5. A guide member 28 having a through hole 27 inserted therethrough is disposed above the support base 7 so as to guide the friction material tape 24 above the core plate 2 positioned on the support base 7.

A feed-out member 29 is disposed between the reel 26 and the guide member 28 for intermittently feeding out the friction material tape 24 above the support base 7 and thus the core plate 2 by the amount necessary for one multi-row punching process. be done.

The feeding member 29 is constructed as follows.

6th. As shown in FIG. 7, a third rotating shaft 333 is rotatably supported by the machine frame 30 below the friction material tape 24, and the friction material tape 24 is attached to the third rotating shaft 333 between the upper part of the outer circumference. A pair of guide plates 31 that sandwich and guide
is fixed.

A presser roller 32 that slides against the friction material tape 24 is disposed directly above the third rotating shaft 333, and the axial length of the presser roller 32 is formed to be slightly shorter than the distance between the guide plates 31. The third rotating shaft 33. is located between both guide plates 31. A small-diameter cylindrical friction body 34 made of rubber or the like is non-rotatably disposed at a position offset from the axis of I. 35 is both guide plates 3
1 spacer.

In the above configuration, the friction body 34 moves in a circle around the third rotating shaft 331 below the friction material tape 24, and the friction body 34
Only when the friction material tape 24 is rubbed against the lower surface of the friction material tape 24, the friction material tape 24 is fed out as described above in cooperation with the upper pressing roller 32.

36 is a pair of guide rollers, and in FIG. 4, 37 is a tension roller.

6th. As clearly shown in FIG. 6A, a lifting member 38 having a multi-row punching function and capable of punching out nine friction material segments 3 from the friction material tape 24 and press-bonding them to the core plate 2 is attached to the guide member 28. is provided.

That is, in the guide member 28, a tape presser insertion hole 39 is provided on the upper side of the through hole 27 through which the friction material tape 24 is inserted.
However, nine die holes 40 for inserting punches are formed along the circumferential direction of the core plate 2 on the lower side. A tape presser body 42 having a guide hole 41 that matches the die hole 40 is slid into the insertion hole 39 . The pressing member 38 is made up of nine wooden punches 43 that can penetrate through each guide hole 41 and fit into each die hole 40, and a connecting plate 44 that connects the upper end of each punch 43. A spring 18□ is contracted between the bodies 42.

When adhering the friction material segments 3, the pressing member 38 is lowered and the friction material tape 24 is pressed by the tape presser 42, and then the nine friction material segments 3 are bonded by the punch 43.
is punched out, and each friction material segment 3 is pressed and bonded to the bonding surface 2a of the core plate 2 using the lower end pressing surface 43a of each punch 43.

After that, the electric motor m is activated to drive the drive gear g+, the bell)
The support base 7 is rotated 906 times via the drive gear b and the driven gear g2, and the same multi-row punching process as described above and the subsequent pressing process are performed. In this case, the number of intermittent rotations of the support base 7 is three times per surface of the core plate 2.

Next, the operating mechanism M of the feeding member 29 and the pressing member 38
The elevating mechanism M2 will be explained.

Both mechanisms M, M2 have a common power source, an electric motor 46.
activated by The drive shaft of the electric motor 46 is connected to a drive boot U 47 via a speed reducer (not shown), and the drive pulley 47 is connected to a driven pulley 48 fixed to the first rotating shaft 33 via a belt 49. .

A first bevel gear 55. is fixed to the first bevel gear 551, and a second bevel gear 55□ fixed to the second rotating shaft 332 meshes with the first bevel gear 551.

A belt 58 is suspended between a pulley 56 fixed to the second rotating shaft 33□ and a pulley 57 fixed to the third rotating shaft 333 of the feeding member 29.

Said electric motor 46, drive and driven boolean IJ 47.
48, belt 49, first to third rotating shafts 33° to 333,
1st. Second bevel gear 55. ．． 55□, pulley 56, 57,
The belt 58 constitutes an actuation mechanism M1 of the feeding member 29.

Also, the first bevel gear 55. The third bevel gear 553 fixed to the fourth rotating shaft 334 meshes with the fifth rotating shaft 33. which is interlocked with the fourth rotating shaft 334. A belt 61 is suspended between a pulley 59 fixed to and a pulley 60 fixed to the sixth rotating shaft 336.

A disk portion 62 is provided at one end of the sixth rotating shaft 336, and a position off the center of the disk portion 62 and the connecting plate 44 of the pressing member 38 are connected via a link 63. link 63
is a cylindrical portion 64 that is located on the disk portion 62 side and opens downward.
, a rod-shaped portion 65 slidably engaged therewith, and a spring 66 compressed between the ceiling surface of the cylindrical portion 64 and the upper end surface of the rod-shaped portion 65 .

Said electric motor 46, drive and driven pulley 47.48
, heald 49, first, fourth to sixth rotating shafts 33, . 334
~336, 1st. Third bevel gear 55, . 55. , Boo IJ
59, 60, belt 61 and link 63 are the pressing member 3
The pressing member 38 performs one lifting/lowering operation with one rotation of the sixth rotating shaft 336 in the clockwise direction in FIG. 6.

When the pressing member descends on the third day, the lower end pressing surface 43 of each punch 43
The connecting position of the disk portion 62 and the link 63 is such that even after the bonding surface 2a of the core plate 2 is superposed on the adhesive surface 2a of the core plate 2 through the friction material segment 3, a force is applied to each punch 43 in the direction of lowering it. It's decided.

Note that in order to improve the yield of the friction material tape 24,
The number of friction material segments 3 punched by the multi-row punching process and the intermittent rotation speed of the support base 7 are changed as appropriate depending on the diameter of the six plates 2.

C0 Effects of the Invention According to the manufacturing method of the present invention, a friction material tape having a specific width is subjected to multi-row punching to obtain a plurality of friction material segments,
By bonding them into six plates, the yield of friction material is improved, and a friction plate for a clutch is provided with an oil groove having the same depth as the thickness of the friction material between adjacent friction material segments. Can be done. Furthermore, since it can be easily applied to the production of friction plates of various sizes, it is possible to improve economical efficiency together with the improvement in yield. Furthermore, since a plurality of friction material segments are bonded in one bonding operation, the number of bonding steps can be reduced and the manufacturing efficiency of the friction plate can be improved.

Further, according to the manufacturing apparatus of the present invention, the operation of feeding out the friction material tape, the operation of performing multi-row punching on the friction material tape to obtain a plurality of friction material segments, and the operation of temporarily cutting the obtained plurality of friction material segments. The friction plate for a clutch can be manufactured efficiently by repeating the bonding operation reliably.

[Brief explanation of the drawing]

1 to 3 show the friction plate, FIG. 1 is an overall plan view, and FIG. Fig. 3 is a sectional view taken along line n-n and A vertical cross-sectional side view of the friction material segment adhesion mechanism, FIG. 6A is FIG. 6 VI
A view in the direction of arrow A, and FIG. 7 is a sectional view taken along the line ■-■ in FIG. DESCRIPTION OF SYMBOLS 1...Friction plate, 2...6 plate, 2a, 2b...adhesive surface, 3...friction material segment, 4...oil groove, 7...
・Support stand, 24...Friction material tape, 29...Feeding member, 38...Press member

Claims (2)

[Claims] (1) Manufacturing 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. The method includes: positioning the core plate with the adhesive surface coated with an adhesive facing upward; and a plurality of friction material segments existing in areas equally divided on the circumference of the core plate. a step of feeding a friction material tape having a width corresponding to the width above the core plate; performing a multi-row punching process on the friction material tape to obtain a plurality of the friction material segments; A clutch characterized by using the steps of press-bonding the adhesive surface of the core plate; and rotating the core plate while feeding out the friction material tape for the next friction material segment bonding operation. Method of manufacturing a friction plate for use. (2) Manufacturing 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. The apparatus comprises: a support base that positions the core plate with the adhesive surface coated with adhesive facing upward; and a support base that rotates intermittently each time the friction material segments are bonded; A feeding member that feeds out a friction material tape having a width corresponding to the plurality of friction material segments existing in the divided area above the support base, and a multi-row punching process being performed on the friction material tape. A manufacturing apparatus for a friction plate for a clutch, comprising: a pressing member that can be moved up and down to press and bond a plurality of the friction material segments to the core plate.