A pressing device and process flow for producing friction plates

Abstract

The present invention discloses a pressing device and process flow for producing friction plates, and relates to the field of pressing technology. In order to solve the problem of product defects, the process flow includes the following steps: mixing, mixing multiple raw materials in proportion; pressing, pressing the mixed raw materials, and gradually applying pressure and vibration during the pressing process; sintering, sintering the pressed blanks. The device includes a column, a rotating table rotatably connected to the outer wall of the column, and a top plate fixed to the top of the column by bolts, and the inner wall of the rotating table is provided with four forming cavities. The present invention, by setting a transition block, a sleeve, a spring, a serrated protrusion, a serrated groove, etc., can gradually apply pressure by using the spring, and can also make the upper die vibrate while gradually applying pressure, so as to compact the raw materials by using vibration, prevent defects such as pores and gaps, and improve product quality.

Description

Technical Field

[0001] The invention relates to the field of pressing technology, and in particular to a pressing device and a process flow for producing a friction plate. Background Art

[0002] The friction plate is made of a variety of friction materials. It cooperates with the brake pad and uses friction to achieve the braking function.

[0003] After searching, the Chinese patent publication number CN102632233A discloses a high-performance ceramic friction plate and its production process. The high-performance ceramic friction plate is composed of the following substances in parts by weight: copper: 60-68 parts; iron: 10-15; tin: 2-5 parts; silicon dioxide: 5-10 parts; molybdenum disulfide: 3-8 parts; calcium aluminate: 5-10 parts; graphite: 5-13 parts; kerosene: 0.5-1.5. The production process of the friction plate includes mixing and pressing.

[0004] The above patent has the following deficiencies: it is directly pressed and formed. Since the friction coefficient of the raw material of the friction plate is relatively large, direct pressing will cause greater friction between adjacent materials and the presence of pores, gaps and other special-shaped defects.

[0005] To this end, the present invention provides a pressing device and a process flow for producing a friction plate. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a pressing device and process flow for producing a friction plate.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A friction plate production process,

[0009] The following steps are involved:

[0010] S1: Mixing: Mixing various raw materials in proportion;

[0011] S2: Pressing, pressing the mixed raw materials, and gradually applying pressure and vibration during the pressing process;

[0012] S3: Sintering: sintering the pressed blank.

[0013] A pressing device for producing friction plates comprises a column, a rotating table rotatably connected to the outer wall of the column, and a top plate fixed to the top of the column by bolts, the inner wall of the rotating table is provided with four forming cavities, the four forming cavities respectively correspond to a loading station, a transition station, a pressing station and a unloading station, and the bottom inner wall of each of the forming cavities is equipped with a bottom mold, the bottom outer wall of the top plate located at the pressing station is provided with a pressing part, and the bottom outer wall of the top plate located at the loading station is provided with a loading part.

[0014] Furthermore: the pressing part includes a bracket fixed to the outer wall of the column by bolts and an upper mold cooperating with the molding cavity, the upper mold is slidably connected to the bottom outer wall of the top plate by a guide rod, the inner side wall of the bracket is rotatably connected to an eccentric disk, the outer wall of the eccentric disk is rotatably connected to a disk sleeve, the bottom end of the disk sleeve is transmission-connected to the upper mold through a connecting assembly, the side wall of the bracket is fixed with a motor by bolts, and the output shaft of the motor is fixedly connected to the side wall of the eccentric disk.

[0015] On the basis of the above scheme: the connecting assembly includes a sleeve and a transition block slidably connected to the inside of the sleeve, the top of the transition block is rotatably connected to the bottom end of the upper mold through a connecting shaft, the sleeve is fixed to the top outer wall of the upper mold by bolts, a cavity is provided inside the transition block, a plug block is laterally slidably connected to the cavity, a serrated groove is provided on the inner wall of the sleeve, a serrated protrusion matching the serrated groove is provided on the outer wall of the plug block, and a spring 1 is buckled at the bottom end of the transition block, and the other end of the spring 1 is buckled to the top outer wall of the upper mold.

[0016] A better solution in the aforementioned solution is: the connecting assembly also includes a convex ring and a convex plug, the convex plug is slidably connected to the cavity, and the bottom outer wall of the convex plug is buckled with spring 2, the other end of spring 2 is buckled to the inner wall of the cavity, the convex ring is fixed to the outer wall of the connecting shaft, the connecting shaft is fixed to the bottom of the upper mold, and the connecting shaft is rotatably connected to the transition block.

[0017] As a further solution of the present invention: the bottom mold is slidably matched with the inner wall of the molding cavity, and the rotating table is lateral slidingly connected with a sliding rod, the end of the sliding rod is rotatably connected with a connecting rod, and the other end of the connecting rod is rotatably connected to the bottom outer wall of the bottom mold;

[0018] The column is located at the height of the slide rod and a cam is fixed on the outer wall, and the protrusion direction of the cam faces the unloading station;

[0019] The outer circumferential wall of the cam located between the loading station and the pressing station is provided with corrugated protrusions.

[0020] At the same time, the feeding part includes multiple hoppers fixed to the top plate and a mixing deflector fixed and connected to the hoppers. The inner walls of the multiple hoppers are rotatably connected to the same main shaft. The inner wall of the discharge point of each hopper is provided with a feeding roller fixed to the outer wall of the main shaft, and the outer wall of the feeding roller is provided with a uniform material containing groove.

[0021] As a preferred embodiment of the present invention: the main shaft is equipped with a gear through a transmission assembly, the outer wall of the gear is meshed with a rack, the rack is slidably connected to the top plate, and the side wall of the rack is buckled with a spring three, the top of the spring three is buckled with the bottom outer wall of the top plate, the bottom of the rack is rotatably connected to a rotating wheel, and the outer wall of the rotating table located at each molding cavity is fixed with a limiting boss that cooperates with the rotating wheel.

[0022] At the same time, there is a leading angle α between the limiting boss and the forming cavity.

[0023] As a more optimal solution of the present invention: uniform blocking rods are fixed to the inner wall of the mixing guide cover.

[0024] The beneficial effects of the present invention are:

[0025] 1. The present invention, by arranging a transition block, a sleeve, a spring 1, a serrated protrusion, a serrated groove, etc., can gradually apply pressure by using the spring 1, and on the other hand, while gradually applying pressure, can also make the upper mold vibrate, thereby utilizing vibration to compact the raw material, preventing defects such as pores and gaps, and improving product quality.

[0026] 2. The present invention, by setting a rotating table and multiple groups of molding cavities and bottom molds, can utilize the rotation of the rotating table to switch the molding cavity and the bottom mold, so that the loading, unloading and pressing processes can be carried out synchronously and crosswise, thereby increasing production efficiency.

[0027] 3. The present invention sets a convex ring and a convex plug and utilizes the relationship between the lifting and lowering of the upper mold and the tilting direction of the upper mold relative to the transition block, so that when pressing down, the convex ring and the convex plug cooperate to generate vibration for compaction, and when resetting, the convex ring and the convex plug do not cooperate, thereby reducing vibration, reducing resistance and preventing the life of the device from being reduced due to vibration. The entire process is automatically controlled without the need for manual or algorithm-driven intervention.

[0028] 4. The present invention, on the basis of increasing production efficiency by setting up multiple sets of molding cavities and bottom molds, sets the cooperation of sliding rods, connecting rods and cams so that the pressed blank can be automatically lifted up by the bottom mold after reaching the unloading station, thereby increasing the convenience of unloading.

[0029] 5. The present invention, on the basis of setting a transition station, sets corrugated protrusions, so that in the transition conveying process between feeding and pressing, the up and down vibration movement of the bottom mold can be used to compact the raw materials so that they fill the inner cavity of the molding cavity and the upper surface is relatively flat, which is convenient for subsequent pressing and further improves the molding quality.

[0030] 6. The present invention realizes simultaneous discharging of different materials by setting a plurality of discharging rollers. The plurality of discharging rollers are linked by the main shaft to ensure the discharging ratio of each raw material. Meanwhile, the rotation of the main shaft is limited by the rotating wheel and the limiting boss to realize automatic non-driven discharging and increase the linkage. Furthermore, by setting the advance angle α, it can also ensure that the material falls into the molding cavity reliably to prevent it from spilling onto the surface of the rotating table. In addition, by setting a blocking rod, the material can be mixed when it is blocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the overall structure of a pressing device for producing a friction plate proposed by the present invention;

[0032] Figure 2 A schematic diagram of the structure of a pressing part of a pressing device for producing a friction plate proposed by the present invention;

[0033] Figure 3 A schematic cross-sectional view of a connecting assembly of a friction plate production pressing device proposed by the present invention Figure 1 ;

[0034] Figure 4 A schematic cross-sectional view of a connecting assembly of a friction plate production pressing device proposed by the present invention Figure 2 ;

[0035] Figure 5 A schematic diagram of the connecting rod and sliding rod structure of a pressing device for producing a friction plate proposed by the present invention;

[0036] Figure 6 A schematic diagram of the cross-sectional structure of a cam of a pressing device for producing a friction plate proposed by the present invention;

[0037] Figure 7 This is a schematic structural diagram of a feeding part of a pressing device for producing a friction plate proposed by the present invention;

[0038] Figure 8 A pressing device for producing a friction plate proposed by the present invention Figure 7 The enlarged structural diagram of part A in the middle;

[0039] Fig. 9 A schematic cross-sectional view of a hopper and a mixing guide cover of a friction plate production pressing device proposed by the present invention;

[0040] Fig.10 This is a schematic diagram of the position structure of a molding cavity and a limiting boss of a pressing device for producing a friction plate proposed by the present invention;

[0041] Fig.11 The present invention provides a schematic diagram of a friction plate production process.

[0042] In the figure: 1. rotating table; 2. feeding part; 3. column; 4. top plate; 5. pressing part; 6. forming cavity; 7. bottom mold; 8. bracket; 9. motor; 10. eccentric disk; 11. disk sleeve; 12. connecting assembly; 13. upper mold; 14. connecting shaft; 15. transition block; 16. sleeve; 17. cavity; 18. serrated protrusion; 19. spring one; 20. plug block; 21. serrated groove; 22. convex ring; 23. "convex" plug; 24. spring two; 25. connecting rod; 26. sliding rod; 27. cam; 28. corrugated protrusion; 29. ​​hopper; 30. transmission assembly; 31. mixing guide cover; 32. rack; 33. spring three; 34. gear; 35. wheel; 36. limit boss; 37. blocking rod; 38. main shaft; 39. material trough; 40. unloading roller. DETAILED DESCRIPTION

[0043] The technical solution of the present invention is further described in detail below in conjunction with specific implementation methods.

[0044] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention. Example

[0045] A friction plate production process, such as Fig.11 As shown, the following steps are included:

[0046] S1: Mixing: Mixing various raw materials in proportion;

[0047] S2: Pressing, pressing the mixed raw materials, and gradually applying pressure and vibration during the pressing process;

[0048] S3: Sintering: sintering the pressed blank. Example

[0049] A friction plate production pressing device, which is used to implement step S1 and step S2 in embodiment 1, such as Figure 1-10As shown: it includes a column 3, a rotating table 1 rotatably connected to the outer wall of the column 3, and a top plate 4 fixed to the top of the column 3 by bolts. The rotation drive of the rotating table 1 relative to the column 3 can be electric, pneumatic, hydraulic, etc. It only needs to control the rotation of the rotating table 1 relative to the column 3 and the angle can be controlled. For example, a servo motor is directly used for driving. It is a prior art, and this embodiment does not make creative work on it, so it will not be described in detail.

[0050] The inner wall of the rotating table 1 is provided with four molding cavities 6, which correspond to the loading station, transition station, pressing station and unloading station respectively, and the bottom inner wall of each molding cavity 6 is equipped with a bottom mold 7, and the bottom outer wall of the top plate 4 located at the pressing station is provided with a pressing part 5, and the bottom outer wall of the top plate 4 located at the loading station is provided with a loading part 2.

[0051] The pressing part 5 includes a bracket 8 fixed to the outer wall of the column 3 by bolts and an upper mold 13 cooperating with the molding cavity 6. The upper mold 13 is slidably connected to the bottom outer wall of the top plate 4 through a guide rod. The inner side wall of the bracket 8 is rotatably connected to an eccentric disk 10, and the outer wall of the eccentric disk 10 is rotatably connected to a disk sleeve 11. The bottom end of the disk sleeve 11 is transmission-connected to the upper mold 13 through a connecting assembly 12. The side wall of the bracket 8 is fixed with a motor 9 by bolts, and the output shaft of the motor 9 is fixedly connected to the side wall of the eccentric disk 10.

[0052] The connecting assembly 12 includes a sleeve 16 and a transition block 15 slidably connected to the inside of the sleeve 16, the top of the transition block 15 is rotatably connected to the bottom end of the upper mold 13 through a connecting shaft 14, the sleeve 16 is fixed to the top outer wall of the upper mold 13 by bolts, a cavity 17 is provided inside the transition block 15, a plug 20 is laterally slidably connected to the cavity 17, a serrated groove 21 is provided on the inner wall of the sleeve 16, a serrated protrusion 18 matching the serrated groove 21 is provided on the outer wall of the plug 20, and a spring 19 is buckled at the bottom end of the transition block 15, and the other end of the spring 19 is buckled to the top outer wall of the upper mold 13.

[0053] The feeding part 2 can feed the forming cavity 6 at the feeding station, and then the forming cavity 6 after feeding reaches the pressing station after passing through the transition station. At this time, the motor 9 is started, which drives the eccentric disk 10 to rotate, so that the disk sleeve 11 moves, and the upper mold 13 is driven to descend through the disk sleeve 11, and the raw material is pressed and formed in cooperation with the forming cavity 6 and the bottom mold 7. In the pressing process, the upper mold 13 first contacts the raw material and is limited and cannot move, and then the upper mold 13 will continue to descend, so that the spring 19 is compressed, and the pressing pressure is applied by the elastic force generated by the spring 19. At the same time, the upper mold 13 drives the transition block 15 to move relative to the sleeve 16. The cooperation of the serrated protrusion 18 and the serrated groove 21 can make the sleeve 16 vibrate, which is applied to the upper mold 13, and the vibration is used to compact the raw material.

[0054] The device is provided with a rotating table 1 and multiple groups of molding cavities 6 and bottom molds 7. The molding cavities 6 and bottom molds 7 can be switched between the positions by rotating the rotating table 1, so that the loading, unloading and pressing processes can be carried out synchronously and crosswise, thereby increasing production efficiency.

[0055] The device, by arranging the transition block 15, the sleeve 16, the spring 19, the serrated protrusion 18, the serrated groove 21, etc., can gradually apply pressure by using the spring 19, and on the other hand, while gradually applying pressure, it can also make the upper mold 13 vibrate, so as to utilize the vibration to compact the raw material, prevent defects such as pores and gaps, and improve product quality.

[0056] The connecting assembly 12 also includes a convex ring 22 and a convex plug 23. The convex plug 23 is slidably connected to the cavity 17, and a spring 24 is buckled on the bottom outer wall of the convex plug 23. The other end of the spring 24 is buckled on the inner wall of the cavity 17. The convex ring 22 is fixed to the outer wall of the connecting shaft 14. The connecting shaft 14 is fixed to the bottom of the upper mold 13. The connecting shaft 14 is rotatably connected to the transition block 15.

[0057] When in the downward position, the upper mold 13 will tilt to one side relative to the transition block 15. At this time, the convex ring 22 cooperates with the "convex" plug 23 to press the "convex" plug 23 downward, so that the pressure in the cavity 17 increases, the plug block 20 moves outward, and the serrated protrusion 18 cooperates with the serrated groove 21. When in the upward reset process, the upper mold 13 will tilt to the other side relative to the transition block 15. At this time, the convex ring 22 does not cooperate with the "convex" plug 23, and the "convex" plug 23 moves upward under the elastic force of the spring 24, and the cavity 17 produces negative pressure. The plug block 20 moves inward, and the serrated protrusion 18 does not cooperate with the serrated groove 21.

[0058] The device, by setting a convex ring 22 and a convex plug 23, utilizes the relationship between the lifting and lowering of the upper mold 13 and the tilting direction of the upper mold 13 relative to the transition block 15, so that when pressing down, the convex ring 22 and the convex plug 23 can cooperate to generate vibration for compaction, and when resetting, the convex ring 22 and the convex plug 23 do not cooperate, thereby reducing vibration generation, reducing resistance and preventing the life of the device from being reduced due to vibration. The entire process is automatically controlled without the need for manual or algorithm-driven intervention.

[0059] In order to solve the problem of automatic demoulding and further improve product quality, such as Figure 5 , 6 As shown, the bottom mold 7 is slidably fitted to the inner wall of the molding cavity 6 , and the rotating table 1 is laterally slidably connected to a slide rod 26 , the end of the slide rod 26 is rotatably connected to a connecting rod 25 , and the other end of the connecting rod 25 is rotatably connected to the bottom outer wall of the bottom mold 7 .

[0060] A cam 27 is fixed to the outer wall of the column 3 at the height of the slide rod 26 , and the protruding direction of the cam 27 faces the unloading station.

[0061] The outer circumferential wall of the cam 27 between the loading station and the pressing station is provided with a corrugated protrusion 28 .

[0062] When the pressing is completed, the rotating table 1 drives the slide bar 26 to rotate to the unloading station. At this time, the slide bar 26 is limited by the protrusion of the cam 27 and moves outward, so that the bottom mold 7 rises through the connecting rod 25 to push out the blank. Then, when it continues to rotate, the slide bar 26 is reset by the gravity of the bottom mold 7 to ensure that the inner cavity of the molding cavity 6 has a material holding space, and then the loading port. During the process of the molding cavity 6 rotating from the loading station to the pressing station, the slide bar 26 will continuously cooperate with the corrugated protrusion 28, so that the bottom mold 7 moves up and down in a vibrating manner until it reaches the pressing station and stops.

[0063] This device, on the basis of increasing production efficiency by arranging multiple groups of molding cavities 6 and bottom molds 7, arranges the slide bar 26, the connecting rod 25, and the cam 27 to cooperate with each other, so that the pressed blank can be automatically lifted up by the bottom mold 7 after reaching the unloading station, thereby increasing the convenience of unloading.

[0064] This device, based on the provision of a transition station, provides a corrugated protrusion 28, so that during the transitional conveying process between feeding and pressing, the up and down vibration movement of the bottom mold 7 can be used to compact the raw material so that it fills the inner cavity of the molding cavity 6 and the upper surface is relatively flat, which is convenient for subsequent pressing and further improves the molding quality.

[0065] In order to solve the feeding problem, such as Figure 7-10 As shown, the feeding part 2 includes a plurality of hoppers 29 fixed to the top plate 4 and a mixing deflector 31 fixed to and connected to the hoppers 29. The inner walls of the plurality of hoppers 29 are rotatably connected to the same main shaft 38. The inner wall of the discharge point of each hopper 29 is provided with a discharge roller 40 fixed to the outer wall of the main shaft 38. The outer wall of the discharge roller 40 is provided with a uniform material containing groove 39.

[0066] The main shaft 38 is driven by the transmission assembly 30 and is matched with a gear 34. The outer wall of the gear 34 is meshed with a rack 32. The rack 32 is slidably connected to the top plate 4, and the side wall of the rack 32 is buckled with a spring 33. The top of the spring 33 is buckled with the bottom outer wall of the top plate 4. The bottom of the rack 32 is rotatably connected with a rotating wheel 35. The outer wall of the rotating table 1 located at each molding cavity 6 is fixed with a limiting boss 36 that cooperates with the rotating wheel 35. Figure 7 Only one limiting boss 36 is shown for illustration.

[0067] There is a leading angle α between the limiting boss 36 and the forming cavity 6 .

[0068] The inner wall of the mixing guide cover 31 is fixed with uniform blocking rods 37 .

[0069] A variety of raw materials can be placed in the interior of multiple hoppers 29 respectively. When the molding cavity 6 and the limiting boss 36 rotate to the loading station, the rotating wheel 35 is moved upward by the limiting action of the limiting boss 36, thereby driving the gear 34 to rotate, and then driving the unloading roller 40 to rotate through the transmission component 30, and the material trough 39 is used for loading. At the same time, when the rotating wheel 35 contacts the two sides of the limiting boss 36, the unloading roller 40 turns in the opposite direction, and the unloading roller 40 can realize the unloading work regardless of forward or reverse rotation, so one forward rotation plus one flip of the unloading roller 40 is one unloading process. The unloading raw materials enter the mixing guide cover 31 for mixing, and then fall into the molding cavity 6 to realize loading.

[0070] The purpose of setting the advance angle α is as follows: since there is a certain time difference from the raw materials being fed to being mixed through the mixing hood 31 and then flowing into the molding cavity 6, the advance angle α can compensate for the time difference to ensure feeding. When the molding cavity 6 rotates to the bottom of the mixing hood 31, the mixed material just discharges from the bottom of the mixing hood 31. At the same time, after a feeding process is completed, the molding cavity 6 is still at the bottom of the mixing hood 31. At this time, the material in the mixed state in the mixing hood 31 can continue to enter the molding cavity 6.

[0071] The device realizes simultaneous discharging of different materials by setting a plurality of discharging rollers 40. The plurality of discharging rollers 40 are linked by the main shaft 38, so as to ensure the discharging ratio of each raw material. Meanwhile, the rotation of the main shaft 38 is limited by the rotating wheel 35 and the limiting boss 36, so as to realize automatic non-driven discharging and increase the linkage. Furthermore, by setting the advance angle α, it can also ensure that the material falls into the molding cavity 6 reliably to prevent it from spilling onto the surface of the rotating table 1. In addition, by setting the blocking rod 37, it can also mix the material when blocking it.

[0072] When the present embodiment is in use, the feeding part 2 can feed the forming cavity 6 at the feeding station, and then the forming cavity 6 after feeding reaches the pressing station after passing through the transition station. At this time, the motor 9 is started, which drives the eccentric disk 10 to rotate, so that the disk sleeve 11 moves, and the upper mold 13 is driven to descend through the disk sleeve 11, and the raw material is pressed and formed in cooperation with the forming cavity 6 and the bottom mold 7. In the pressing process, the upper mold 13 first contacts the raw material and is limited and cannot move, and then the upper mold 13 will continue to descend, so that the spring 19 is compressed, and the spring 19 generates elastic force to apply pressing pressure, and at the same time, the upper mold 13 drives the transition block 15 to move relative to the sleeve 16. When the upper die 13 is in the downward position, the serrated protrusion 18 cooperates with the serrated groove 21 to make the sleeve 16 vibrate, thereby exerting vibration on the upper die 13, and the raw material is compacted by the vibration. When it is in the downward position, the upper die 13 will tilt to one side relative to the transition block 15. At this time, the convex ring 22 cooperates with the "convex" plug 23 to press the "convex" plug 23 downward, so that the pressure in the cavity 17 increases, and the plug 20 moves outward. The serrated protrusion 18 cooperates with the serrated groove 21. When it is in the upward reset process, the upper die 13 will tilt to the other side relative to the transition block 15. At this time, the convex ring 22 and the "convex" plug 23 do not cooperate, and the "convex" plug 23 is moved upward by the elastic force of the spring 24, and the cavity 17 Negative pressure is generated in the inner cavity, and the plug 20 moves inward, and the serrated protrusion 18 does not cooperate with the serrated groove 21. When the pressing is completed, the rotary table 1 drives the slide bar 26 to rotate to the unloading station. At this time, the slide bar 26 is limited by the protrusion of the cam 27 and moves outward, so that the bottom mold 7 rises through the connecting rod 25 to eject the blank. Then, when the rotation continues, the slide bar 26 is reset by the gravity of the bottom mold 7 to ensure that the inner cavity of the molding cavity 6 has a material holding space, and then the loading port is loaded. During the process of the molding cavity 6 rotating from the loading station to the pressing station, the slide bar 26 will continuously cooperate with the corrugated protrusion 28, so that the bottom mold 7 moves up and down in a vibrating manner until it reaches the pressing station and stops. The raw materials are placed in the interior of multiple hoppers 29 respectively. When the molding cavity 6 and the limiting boss 36 rotate to the loading station, the rotating wheel 35 is moved upward by the limiting boss 36, thereby driving the gear 34 to rotate, and then driving the unloading roller 40 to rotate through the transmission component 30, and the material trough 39 is used for loading. At the same time, when the rotating wheel 35 contacts the two sides of the limiting boss 36, the unloading roller 40 turns in the opposite direction, and the unloading roller 40 can realize the unloading work regardless of forward or reverse rotation, so one forward rotation plus one flip of the unloading roller 40 is one unloading process. The unloading raw materials enter the mixing guide cover 31 for mixing, and then fall into the molding cavity 6 to realize loading.

[0073] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A pressing device for producing a friction plate, which is applied to a friction plate production process, wherein the friction plate production process comprises the following steps: S1: Mixing: Mixing various raw materials in proportion; S2: Pressing, pressing the mixed raw materials, and gradually applying pressure and vibration during the pressing process; S3: sintering, sintering the pressed blank; The invention is characterized in that the pressing device for producing a friction plate is applied to steps S1 and S2 of the friction plate production process, and specifically comprises a column (3), a rotating table (1) rotatably connected to the outer wall of the column (3), and a top plate (4) fixed to the top of the column (3) by bolts, the inner wall of the rotating table (1) is provided with four molding cavities (6), the four molding cavities (6) respectively correspond to a loading station, a transition station, a pressing station and a unloading station, and the bottom inner wall of each molding cavity (6) is equipped with a bottom mold (7), the bottom outer wall of the top plate (4) located at the pressing station is provided with a pressing portion (5), and the bottom outer wall of the top plate (4) located at the loading station is provided with a loading portion (2); The pressing part (5) comprises a bracket (8) fixed to the outer wall of the column (3) by bolts and an upper die (13) matched with the molding cavity (6); the upper die (13) is slidably connected to the bottom outer wall of the top plate (4) by a guide rod; the inner side wall of the bracket (8) is rotatably connected to an eccentric disk (10); the outer wall of the eccentric disk (10) is rotatably connected to a disk sleeve (11); the bottom end of the disk sleeve (11) is transmission-connected to the upper die (13) via a connecting assembly (12); the side wall of the bracket (8) is fixed to a motor (9) by bolts; the output shaft of the motor (9) is fixedly connected to the side wall of the eccentric disk (10); The connecting assembly (12) comprises a sleeve (16) and a transition block (15) slidably connected to the inside of the sleeve (16); the top of the transition block (15) is rotatably connected to the bottom end of the upper mold (13) via a connecting shaft (14); the sleeve (16) is fixed to the top outer wall of the upper mold (13) via bolts; a cavity (17) is provided inside the transition block (15); a plug block (20) is slidably connected to the cavity (17); a sawtooth groove (21) is provided on the inner wall of the sleeve (16); a sawtooth protrusion (18) matching the sawtooth groove (21) is provided on the outer wall of the plug block (20); and a spring (19) is buckled at the bottom end of the transition block (15); the other end of the spring (19) is buckled to the top outer wall of the upper mold (13); The connecting assembly (12) further comprises a convex ring (22) and a convex plug (23), wherein the convex plug (23) is slidably connected to the cavity (17), and a second spring (24) is buckled on the outer wall of the bottom of the convex plug (23), and the other end of the second spring (24) is buckled on the inner wall of the cavity (17), the convex ring (22) is fixed to the outer wall of the connecting shaft (14), the connecting shaft (14) is fixed to the bottom of the upper mold (13), and the connecting shaft (14) is rotatably connected to the transition block (15).

2. A pressing device for producing friction plates according to claim 1, characterized in that: The bottom mold (7) is slidably matched with the inner wall of the molding cavity (6), and the rotating table (1) is lateraly slidably connected to a sliding rod (26), the end of the sliding rod (26) is rotatably connected to a connecting rod (25), and the other end of the connecting rod (25) is rotatably connected to the bottom outer wall of the bottom mold (7); A cam (27) is fixed to the outer wall of the column (3) at the height of the slide rod (26), and the protruding direction of the cam (27) faces the unloading station; The outer circumferential wall of the cam (27) located between the loading station and the pressing station is provided with a corrugated protrusion (28).

3. A pressing device for producing friction plates according to claim 1, characterized in that: The loading part (2) comprises a plurality of hoppers (29) fixed to the top plate (4) and a mixing guide cover (31) fixed to and connected to the hoppers (29); the inner walls of the plurality of hoppers (29) are rotatably connected to the same main shaft (38); the inner wall of the discharge point of each hopper (29) is provided with a feeding roller (40) fixed to the outer wall of the main shaft (38); and the outer wall of the feeding roller (40) is provided with a uniform material containing groove (39).

4. A pressing device for producing friction plates according to claim 3, characterized in that: The main shaft (38) is driven by a transmission assembly (30) and is matched with a gear (34). The outer wall of the gear (34) is meshed with a rack (32). The rack (32) is slidably connected to the top plate (4). The side wall of the rack (32) is buckled with a spring three (33). The top of the spring three (33) is buckled with the bottom outer wall of the top plate (4). The bottom of the rack (32) is rotatably connected with a rotating wheel (35). The outer wall of the rotating table (1) located at each molding cavity (6) is fixed with a limiting boss (36) that cooperates with the rotating wheel (35).

5. A pressing device for producing friction plates according to claim 4, characterized in that: There is a leading angle α between the limiting boss (36) and the forming cavity (6).

6. A pressing device for producing friction plates according to claim 4, characterized in that: The inner wall of the mixing guide cover (31) is fixed with uniform blocking rods (37).

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