A forming apparatus for manufacturing a brake disc from a powder composite

Abstract

The application relates to the technical field of profiling equipment, in particular to a forming equipment for manufacturing brake discs from powder composite materials, which comprises a powder forming die and a hot die forging shaping die; the powder forming die is used for pressing powder composite materials into a blank; the hot die forging shaping die is used for shaping the blank into a brake disc; the powder forming die comprises a forming upper punch assembly, a forming lower punch assembly and a forming demolding assembly; and the hot die forging shaping die comprises a shaping upper punch assembly, a shaping lower punch assembly, a main demolding cylinder and a secondary demolding cylinder. The application solves the technical problems of low blank pressing quality, low die replacement efficiency and high difficulty in the demolding stage in the prior art, and improves the manufacturing efficiency of the brake disc by arranging a complete brake disc production line.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of profiling equipment, in particular to a forming equipment for manufacturing brake discs from powder composite materials. BACKGROUND

[0002] The existing brake disc manufacturing process is generally discontinuous, resulting in low production efficiency and severely reducing production efficiency. The existing technology uses single materials to manufacture parts, which has many limitations and cannot meet the increasingly complex and diversified industrial demands. The current mold replacement efficiency is low, and the production of brake discs requires frequent mold replacement, causing production equipment to stop and affecting production efficiency. During the demolding stage, the shape of the composite brake disc is complex, making demolding difficult. The existing demolding structure often cannot smoothly achieve demolding, which can easily cause damage to the product or surface quality defects, increase the scrap rate, and reduce production efficiency. SUMMARY

[0003] The present application aims to at least solve one of the technical problems in the related art. To this end, the present application provides a forming equipment for manufacturing brake discs from powder composite materials, which solves the technical problems of low blank pressing quality, low mold replacement efficiency, and high difficulty in the demolding stage in the prior art. By setting up a complete brake disc production line, the manufacturing efficiency of the brake disc is improved.

[0004] The present application provides a forming equipment for manufacturing brake discs from powder composite materials, which includes a powder forming die and a hot die forging shaping die. The powder forming die is used to press the powder composite material into a blank, and the hot die forging shaping die is used to shape the blank into a brake disc.

[0005] The powder forming die includes a forming upper punch assembly, a forming lower punch assembly, and a forming demolding assembly. The powder composite material is placed in the forming lower punch assembly, and then the forming upper punch assembly is adjusted to move downward so that the forming upper punch assembly is connected to the forming lower punch assembly, thereby pressing the powder composite material into a blank. Then the forming upper punch assembly moves upward, and the forming lower punch assembly is driven by the forming demolding assembly to move downward for blank demolding.

[0006] The hot die forging shaping die includes a shaping upper punch assembly, a shaping lower punch assembly, a main demolding cylinder, and a secondary demolding cylinder. The blank is placed in the shaping lower punch assembly, and then the shaping upper punch assembly is adjusted to move downward so that the shaping upper punch assembly is connected to the shaping lower punch assembly, thereby shaping the blank into a brake disc. Then the shaping upper punch assembly moves upward, and the shaping lower punch assembly is controlled by the secondary demolding cylinder to move downward, and the main demolding cylinder controls the shaping lower punch assembly and the secondary demolding cylinder to move downward, thereby achieving brake disc demolding.

[0007] The further improvement of the forming equipment for manufacturing brake disc by powder composite material is that the powder forming die is further provided with a forming frame body.

[0008] The forming upper punch assembly comprises a forming motor installed on the forming frame body, a forming sliding block drivingly connected to the forming motor, and an upper punch plate connected to the forming sliding block.

[0009] The further improvement of the forming equipment for manufacturing brake disc by powder composite material is that the forming lower punch assembly comprises a mandrel cylinder, a lower punch, a lower punch plate, and a die sleeve, the mandrel cylinder is installed on the forming frame body, the lower punch is connected to the mandrel cylinder, the lower punch plate is installed on the top of the lower punch, the die sleeve surrounds the lower punch and the lower punch plate, and the powder composite material is placed between the lower punch plate and the die sleeve.

[0010] The further improvement of the forming equipment for manufacturing brake disc by powder composite material is that a bushing is arranged between the die sleeve and the lower punch.

[0011] The further improvement of the forming equipment for manufacturing brake disc by powder composite material is that the forming frame body is installed with a guide rod, and the die sleeve is sleeved on the guide rod.

[0012] The further improvement of the forming equipment for manufacturing brake disc by powder composite material is that the forming demolding assembly comprises a forming demolding cylinder installed on the forming frame body, the forming demolding cylinder has a forming demolding shaft which is adjustable in extension and retraction, the top end of the forming demolding shaft is provided with a forming demolding connecting sleeve, and the forming demolding connecting sleeve is connected to the die sleeve.

[0013] The further improvement of the forming equipment for manufacturing brake disc by powder composite material is that the hot die forging shaping die is further provided with a shaping frame body, the shaping upper punch assembly comprises a shaping motor installed on the shaping frame body, a shaping sliding block drivingly connected to the shaping motor, an upper center cylinder installed on the shaping sliding block, and an upper punch connected to the upper center cylinder, the shaping motor can drive the shaping sliding block to move in the height direction, and the upper punch is provided with a first heating pipe.

[0014] The further improvement of the forming equipment for manufacturing brake disc by powder composite material is that the main demolding cylinder is installed on the shaping frame body, the top of the main demolding cylinder is connected with an outer ring ejection plate, and the top of the outer ring ejection plate is provided with an outer ring ejection rod.

[0015] The vice demolding cylinder is installed on the top of the main demolding cylinder, the top of the vice demolding cylinder is connected with an inner ring ejection plate, and the top of the inner ring ejection plate is provided with an inner ring ejection rod.

[0016] The shaping lower punch assembly comprises a shaping lower punch base, a shaping die, a lower punch outer ring and a lower punch inner ring, the outer ring top rod and the inner ring top rod are arranged in the shaping lower punch base, the shaping lower punch base is installed on a shaping frame body, the shaping die is installed on the top of the shaping lower punch base, the lower punch outer ring is arranged on the top of the outer ring top rod, the lower punch inner ring is arranged on the top of the inner ring top rod, and the lower punch outer ring is sleeved on the lower punch inner ring.

[0017] The further improvement of the forming equipment for manufacturing brake discs by powder composite materials is that a bushing is arranged between the shaping die and the lower punch outer ring.

[0018] The further improvement of the forming equipment for manufacturing brake discs by powder composite materials is that a second heating pipe is arranged in the shaping die.

[0019] In the powder forming die in the forming equipment for manufacturing brake discs by powder composite materials, due to the compression of the powder composite material, lateral pressure is generated on the inner wall of the die sleeve, friction is generated by the lateral pressure, the die sleeve is passively lowered with the compression of the powder composite material, displacement is generated between the die bottom lower punch and the die sleeve, so that the powder composite material at the bottom is actively compressed, the whole process realizes floating compression, the upper part and the lower part of the powder composite material are subjected to equivalent pressure, and the density of the blank is more uniform. After the blank compression is completed, the forming ejection assembly continues to maintain the pressure on the blank, at this time, the die sleeve is slowly pulled down by the forming ejection cylinder, the upper and lower surfaces of the blank are still under the pressure protection of the upper punch plate and the lower punch, and the workpiece will not be damaged due to the relative movement of the blank and the die side wall.

[0020] In the hot die forging shaping die in the forming equipment for manufacturing brake discs by powder composite materials, due to the complex profile of the brake disc, the size difference of the profile in the horizontal direction is large, one-time compression molding and one-time demolding are impossible, edge compression is required for multi-segment demolding, the pressure of the shaping slider is transmitted to the periphery of the blank by the upper center cylinder during blank shaping, the complex profile of the center of the blank is shaped by the lower pressure of the upper center cylinder after the periphery is compressed; during demolding, the brake disc is demolded from the side wall of the shaping die by the simultaneous ejection of the main and auxiliary demolding cylinders, then the brake disc outer ring is demolded from the shaping die by the continuous demolding of the auxiliary demolding cylinder, and finally the workpiece is demolded by the second mechanical hand.

[0021] The forming equipment for manufacturing brake discs by powder composites realizes efficient, accurate and continuous automatic production process. The forming equipment not only optimizes the pressing process of powder composites, but also significantly improves the forming quality and production efficiency of brake discs. Through the floating pressing technology, the uniformity of the blank density is ensured, and the material waste and workpiece quality problems caused by uneven pressure are avoided. At the same time, the hot die forging shaping die makes it possible to form the complex surface of the brake disc, meeting the strict requirements of high-performance brake discs on precision and strength. The application of multi-stage demolding technology effectively solves the demolding problem caused by the complex surface of the brake disc, further improving the production efficiency and product quality.

[0022] Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will become apparent to those having ordinary skill in the art upon examination of the following or can be learned from practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the application or prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0024] Figure 1 is a schematic diagram of the forming equipment for manufacturing brake discs by powder composites provided by the application.

[0025] Figure 2 is a schematic diagram of the powder forming die in the forming equipment for manufacturing brake discs by powder composites provided by the application.

[0026] Figure 3 is a schematic diagram of the hot die forging shaping die in the forming equipment for manufacturing brake discs by powder composites provided by the application.

[0027] Figure 4 is a schematic diagram of the working process of the powder forming die in the forming equipment for manufacturing brake discs by powder composites provided by the application.

[0028] Figure 5 is a schematic diagram of the working process of the hot die forging shaping die in the forming equipment for manufacturing brake discs by powder composites provided by the application.

[0029] Reference signs:

[0030] 1, powder forming die; 2, hot die forging shaping die; 3, conveying device; 4, first mechanical arm; 5, second mechanical arm; 6, external conveying device; 101, forming upper die seat; 102, upper punch plate; 103, mandrel cylinder; 104, forming mandrel; 105, lower punch; 106, lower punch plate; 107, die sleeve; 108, guide rod; 109, first bushing; 110, forming demolding cylinder; 111, forming demolding shaft; 112, forming demolding connecting sleeve; 201, shaping slider; 202, upper center cylinder; 203, upper punch; 204, shaping plate; 205, first heating pipe; 211, main demolding cylinder; 212, auxiliary mounting plate; 213, outer circle material lifting disc; 214, outer circle ejector rod; 215, lower punch outer circle; 216, auxiliary demolding cylinder; 217, inner circle material lifting disc; 218, inner circle ejector rod; 219, lower punch inner circle; 220, shaping lower punch base; 221, shaping die; 222, second heating pipe; 223, second bushing; 224, lower punch mandrel. DETAILED DESCRIPTION

[0031] To make the objectives, technical solutions, and advantages of the present application clearer, the technical solutions in the present application will be described below in connection with the drawings in the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application. The following embodiments are used to illustrate the present application, but cannot be used to limit the scope of the present application.

[0032] The present application is described below in connection with Figures 1 to 3 A powder composite brake disc forming device is described in the present application, which comprises a powder forming die 1 and a hot die forging shaping die 2. The powder forming die 1 is used to press the powder composite material into a blank, and the hot die forging shaping die 2 is used to shape the blank into a brake disc. The side of the powder forming die 1 is provided with a first mechanical arm 4 and a heating furnace, and the side of the hot die forging shaping die 2 is provided with a second mechanical arm 5. The first mechanical arm 4 is used to transfer the blank pressed by the powder forming die 1 to the heating furnace for high-temperature shaping, and then the first mechanical arm 4 is used to transfer the blank to the conveying device 3, which is used to transfer the blank to the position corresponding to the second mechanical arm 5, and the second mechanical arm 5 is used to transfer the blank to the hot die forging shaping die 2.

[0033] Preferably, the second mechanical arm 5 is also provided with an external conveying device 6 corresponding to the position, which is convenient for transporting the finished brake disc.

[0034] In a preferred embodiment, as Figure 2As shown, the powder forming die 1 comprises a forming upper punch assembly, a forming lower punch assembly and a forming demolding assembly. The powder composite material is placed in the forming lower punch assembly, and then the forming upper punch assembly is adjusted to move downward so that the forming upper punch assembly is docked with the forming lower punch assembly, so as to press the powder composite material into a blank, and then the forming upper punch assembly moves upward, and then the forming demolding assembly drives the forming lower punch assembly to move downward to demold the blank, so as to easily realize the demolding of the blank, reduce manual intervention and reduce production cost.

[0035] Specifically, the powder forming die 1 is further provided with a forming frame body; the forming upper punch assembly comprises a forming motor installed on the forming frame body, a forming sliding block drivingly connected to the forming motor, and an upper punch plate 102 connected to the forming sliding block.

[0036] Preferably, the forming frame body has a forming upper cross beam and a forming lower cross beam, the forming motor is installed on the forming upper cross beam, and the bottom of the forming sliding block is fixedly connected with a forming upper die seat 101, and the upper punch plate 102 is detachably connected to the forming upper die seat 101.

[0037] Preferably, the upper punch plate 102 can be connected to the forming upper die seat 101 by magnetic adsorption or clamping.

[0038] Preferably, the shape of the upper punch plate 102 matches the shape of the blank to be formed, different shapes of blanks can be pressed by replacing the upper punch plate 102, and the flexibility and application range of the die are greatly improved.

[0039] Further, as shown, Figure 2 the forming lower punch assembly comprises a mandrel cylinder 103, a lower punch 105, a lower punch plate 106 and a die sleeve 107, the mandrel cylinder 103 is installed on the lower cross beam of the forming frame body, the lower punch 105 is connected to a forming mandrel 104 of the mandrel cylinder 103, the lower punch plate 106 is installed on the top of the lower punch 105, the die sleeve 107 surrounds the lower punch 105 and the lower punch plate 106, and the powder composite material is placed between the lower punch plate 106 and the die sleeve 107.

[0040] Preferably, as shown, Figure 2 the top of the lower punch plate 106 matches the bottom of the blank to be formed, the die sleeve 107 surrounds the lower punch 105 and the lower punch plate 106, and the position of the die sleeve 107 relative to the lower punch 105 is changed to facilitate the demolding of the blank.

[0041] Preferably, as shown, Figure 2As shown, a first bushing 109 is arranged between the die sleeve 107 and the lower punch 105, which can effectively reduce the friction between the die sleeve 107 and the lower punch 105, protect the die sleeve 107 from wear, prolong the service life of the die sleeve 107, and provide better sealing performance to prevent leakage of the powder composite material during pressing and ensure the forming quality of the blank.

[0042] Preferably, the first bushing 109 can be made of wear-resistant and high-temperature-resistant materials to adapt to the high-temperature and high-pressure forming environment.

[0043] Preferably, as shown, Figure 2 The forming frame body is provided with a guide rod 108, and the die sleeve 107 is sleeved on the guide rod 108. The arrangement of the guide rod 108 not only enhances the overall structural stability of the mold, but also ensures the accurate guidance of the die sleeve 107 during movement, avoiding forming errors caused by the deviation or shaking of the die sleeve 107. The design of the die sleeve 107 moving along the guide rod 108 enables the powder forming mold 1 to be flexibly adjusted during operation, adapts to the forming needs of brake discs of different specifications, and improves the versatility and production efficiency of the powder forming mold 1.

[0044] Further, as shown, Figure 2 The forming and demolding assembly includes a forming and demolding cylinder 110 installed on the forming frame body, the forming and demolding cylinder 110 has a forming and demolding shaft 111 that can be adjusted in extension and retraction, the top end of the forming and demolding shaft 111 is provided with a forming and demolding connecting sleeve 112, and the forming and demolding connecting sleeve 112 is connected to the die sleeve 107.

[0045] Preferably, as shown, Figure 2 The forming and demolding cylinder 110 is installed on the lower cross beam of the forming frame body, the vertical section of the forming and demolding connecting sleeve 112 is in the shape of an I-beam, the forming and demolding connecting sleeve 112 includes a first clamping portion, a first shaft portion, and a second clamping portion, the top end of the die sleeve 107 is formed with a first clamping groove, the first clamping portion is clamped in the first clamping groove, the first shaft portion penetrates the die sleeve 107, and the top surface of the second clamping portion abuts against the top surface of the die sleeve 107. The connection stability between the forming and demolding connecting sleeve 112 and the die sleeve 107 is improved, even in the case of high-pressure demolding, the loosening or falling off of the die sleeve 107 can be effectively avoided, thereby ensuring the dimensional accuracy and surface quality of the brake disc product. In addition, the structure of the first clamping portion, the first shaft portion, and the second clamping portion is reasonable, which not only facilitates installation and disassembly, but also ensures the tightness of the connection, providing a strong guarantee for the efficient and stable operation of the mold.

[0046] Preferably, as shown, Figure 2 The position sensor is arranged on the mandrel cylinder 103 and located at the bottom of the die sleeve 107, which can avoid the dislocation and separation of the die sleeve 107 and the lower punch 105.

[0047] Further, as shown in Figure 3 The hot forging shaping die 2 includes a shaping upper punch assembly, a shaping lower punch assembly, a main demolding cylinder 211, and a secondary demolding cylinder 216. The blank is placed on the shaping lower punch assembly, and then the shaping upper punch assembly is adjusted to move downward so that the shaping upper punch assembly is butted against the shaping lower punch assembly, thereby shaping the blank into a brake disc. Then the shaping upper punch assembly moves upward, and the secondary demolding cylinder 216 controls the shaping lower punch assembly to move downward, and the main demolding cylinder 211 controls the secondary demolding cylinder 216 and the shaping lower punch assembly to move downward, thereby achieving demolding of the brake disc.

[0048] Specifically, as shown in Figure 3 The hot forging shaping die 2 further includes a shaping frame body, which includes a shaping upper cross beam and a shaping lower cross beam. The shaping upper punch assembly includes a shaping motor mounted on the shaping upper cross beam, a shaping slider 201 drivingly connected to the shaping motor, an upper center cylinder 202 mounted on the shaping slider 201, and an upper punch 203 connected to the upper center cylinder 202. The shaping motor can drive the shaping slider 201 to move in the height direction, so that the upper punch 203 punches the blank to shape the blank. The shaping slider 201 is drivingly connected to the shaping motor, so that the shaping slider 201 can move in the height direction, thereby achieving accurate punching of the blank. This design ensures the stability and accuracy of the shaping process, avoiding deformation or damage of the blank due to inaccurate punching.

[0049] Preferably, the bottom of the upper punch 203 is provided with a shaping plate 204, which matches the shape of the brake disc to be formed.

[0050] Specifically, the first heating pipe 205 is arranged in the upper punch 203. The upper punch 203 is heated by the first heating pipe 205, so that the upper punch 203 has a certain temperature, which can facilitate shaping of the blank, improve shaping efficiency and shaping quality, and better contact between the heated upper punch 203 and the blank, thereby reducing friction and resistance in the shaping process and making the shaping process smoother.

[0051] Further, as shown in Figure 3 The main demolding cylinder 211 is mounted on the shaping lower cross beam of the shaping frame body, and the top of the main demolding cylinder 211 is connected with an outer ring material lifting disc 213, and the top of the outer ring material lifting disc 213 is provided with an outer ring lifting rod 214.

[0052] The secondary demolding cylinder 216 is mounted on the top of the main demolding cylinder 211, and the top of the secondary demolding cylinder 216 is connected with an inner ring material lifting disc 217, and the top of the inner ring material lifting disc 217 is provided with an inner ring lifting rod 218.

[0053] The shaping lower punch assembly comprises a shaping lower punch base 220, a shaping mold 221, a lower punch outer ring 215, and a lower punch inner ring 219, the outer ring ejector rod 214 and the inner ring ejector rod 218 are arranged in the shaping lower punch base 220, the shaping lower punch base 220 is installed on the shaping lower beam of the shaping frame body, the shaping mold 221 is installed on the top of the shaping lower punch base 220, the lower punch outer ring 215 is arranged on the top of the outer ring ejector rod 214, the lower punch inner ring 219 is arranged on the top of the inner ring ejector rod 218, and the lower punch outer ring 215 is sleeved on the lower punch inner ring 219;

[0054] The outer ring ejection disc 213 and the auxiliary demolding cylinder 216 are driven to move along the height direction by the main demolding cylinder 211, so as to drive the outer ring ejector rod 214 to move along the height direction, thereby driving the lower punch outer ring 215 to move along the height direction, and the inner ring ejection disc 217 is driven to move along the height direction by the auxiliary demolding cylinder 216, so as to drive the inner ring ejector rod 218 to move along the height direction, thereby driving the lower punch inner ring 219 to move along the height direction.

[0055] Preferably, the top of the main demolding cylinder 211 is provided with an auxiliary mounting plate 212, the auxiliary demolding cylinder 216 is installed on the auxiliary mounting plate 212, and the outer ring ejection disc 213 is installed on the top end of the auxiliary mounting plate 212.

[0056] Preferably, the middle position of the outer ring ejection disc 213 is formed with a containing groove, the inner ring ejection disc 217 is located in the containing groove, and a gap is left between the inner ring ejection disc 217 and the inner wall of the containing groove, so as to ensure that the inner ring ejection disc 217 can smoothly move up and down during the ejection process and is not limited by the containing groove. The containing groove can play a role in positioning the inner ring ejection disc 217, so that the inner ring ejection disc 217 can remain stable during the ejection process and will not deviate or shake.

[0057] Specifically, the bottom of the shaping lower punch base 220 is provided with a first limiting groove corresponding to the position of the outer ring ejector rod 214, and the outer ring ejector rod 214 is provided with a first limiting ring corresponding to the position of the first limiting groove. The first limiting groove and the outer ring ejector rod 214 are one-to-one corresponding. Through the first limiting ring and the first limiting groove, the outer ring ejector rod 214 is prevented from being excessively adjusted.

[0058] Specifically, the bottom of the shaping lower punch base 220 is provided with a second limiting groove corresponding to the position of all the inner ring ejector rods 218, and the inner ring ejector rod 218 is provided with a second limiting ring corresponding to the position of the second limiting groove. The first limiting ring is connected to all the inner ring ejector rods 218. Through the second limiting ring and the second limiting groove, the inner ring ejector rod 218 is prevented from being excessively adjusted. The design of the first limiting groove and the second limiting groove ensures the stability and accuracy of the shaping lower punch assembly during the ejection process, and improves the precision and efficiency of the brake disc forming.

[0059] Preferably, a second bushing 223 is arranged between the shaping die 221 and the lower punch outer ring 215, which can effectively reduce the friction between the shaping die 221 and the lower punch outer ring 215, and prolong the service life of the shaping die 221.

[0060] Specifically, the second heating pipe 222 is arranged in the shaping die 221, which can heat the inside of the shaping die 221, ensure that the brake disc is uniformly heated during the forming process, and avoid deformation or cracking problems caused by uneven temperature. At the same time, the second heating pipe 222 can also improve the forming efficiency of the brake disc and shorten the production cycle. The second heating pipe 222 is combined with the shaping die 221 tightly, which can effectively prevent heat loss and save energy.

[0061] Preferably, the lower punch inner ring 219 is provided with a lower punch mandrel 224 in the middle, and the bottom of the shaping plate 204 is provided with a shaft hole corresponding to the lower punch mandrel 224, so that the formed brake disc can have a set shape.

[0062] In a specific implementation case, as shown in Figure 4 , as shown in Figure 4 , the powder composite material is placed on the lower punch plate 106 of the powder forming die 1, and then the upper forming assembly moves downward to make the upper forming assembly and the lower forming assembly fit to press the powder composite material, and then the upper forming assembly moves upward; as shown in Figure 4 , the top material needed for blank forming is installed on the upper punch plate 102; as shown in Figure 4 , the upper forming assembly moves downward; as shown in Figure 4 , the upper forming assembly and the lower forming assembly fit to perform the pressing operation to form the blank; as shown in Figure 4 , the upper forming assembly moves upward, and at the same time, the demolding assembly works to make the blank demold; as shown in Figure 4 , the upper forming assembly and the lower forming assembly are separated to facilitate the first mechanical hand 4 to grab the blank.

[0063] In a specific implementation case, as shown in Figure 5 , as shown in Figure 5 a, the blank heated by the heating furnace is placed on the top of the lower punch outer ring 215 and the lower punch inner ring 219 of the shaping lower punch assembly; as shown in Figure 5 b, the shaping upper punch assembly moves downward quickly for stamping to shape the blank into a brake disc; as shown in Figure 5 c, the shaping upper punch assembly continues to apply pressure to the shaped brake disc to keep the shape of the brake disc stable; as shown in Figure 5 d, the shaping upper punch assembly moves upward, and at the same time, the main demolding cylinder 211 works to preliminarily demold the brake disc; as shown inFigure 5 As shown in Fig. e, the secondary stripper cylinder 216 performs secondary stripping, facilitating the second robot 5 to take the workpiece; as shown in Fig. f, the secondary stripper cylinder 216 and the primary stripper cylinder 211 work to make the lower punch inner ring 219 and the lower punch outer ring 215 descend and reset. Figure 5

[0064] Preferably, during the blank pressing process, lateral pressure is generated on the inner wall of the die sleeve 107 due to the compression of the powder composite material, the lateral pressure generates friction, the die sleeve 107 is passively lowered with the compression of the powder composite material, the displacement between the die bottom lower punch 105 and the die sleeve 107 is generated, so that the bottom powder composite material is actively compressed, the whole process realizes floating pressing, and the upper and lower parts of the powder composite material are subjected to equivalent pressure, so that the density of the blank is more uniform.

[0065] Preferably, after the blank pressing is completed, the forming stripper cylinder 110 slowly pulls down the die sleeve 107, and the upper and lower surfaces of the blank are still under the pressure protection of the upper punch plate 102 and the lower punch 105, so that the workpiece is not damaged due to the relative movement between the blank and the die side wall.

[0066] Preferably, during the working process of the hot die forging shaping die 2, due to the complex profile of the brake disc, the size difference of the horizontal profile is large, and it cannot be pressed and formed at one time and stripped at one time, so it needs to be pressed and formed in multiple sections and stripped, the pressure of the shaping slide block 201 is transmitted to the periphery of the blank through the upper center cylinder 202 when the blank is shaped, and after the periphery is pressed tightly, the upper center cylinder 202 presses down to shape the complex profile of the center of the blank; during stripping, the primary and secondary stripper cylinders 216 are used to eject at the same time, so that the brake disc is stripped from the side wall of the shaping die 221, then the secondary stripper cylinder 216 continues to strip, so that the outer circle of the brake disc is stripped from the shaping die 221, and finally the second robot 5 takes the workpiece to strip it.

[0067] Preferably, the connections of each part of the powder forming die 1 can realize the function of quick replacement, when the workpiece specification needs to be replaced, the parts that need to be replaced are the forming upper die seat 101, the upper punch plate 102, the die sleeve 107, the lower punch 105, the lower punch plate 106, and the first bushing 109. Each part is bound as a whole in the powder forming die 1, another set of die body installed outside the machine can be replaced with the die body inside the machine, realizing quick die replacement, and the whole die replacement time is expected to be less than 1 hour, improving the production efficiency and reducing the downtime during die replacement.

[0068] ​It should be pointed out finally that the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit the same; and although the present application has been described in detail with reference to the foregoing embodiments, it should be appreciated by those skilled in the art that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features thereof can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A forming apparatus for making a brake disc from a powder composite material, characterized in that The application relates to a powder forming die and a hot die forging shaping die, wherein the powder forming die is used for pressing a powder composite material into a blank, and the hot die forging shaping die is used for shaping the blank into a brake disc. The powder forming die comprises a forming upper punch assembly, a forming lower punch assembly and a forming demolding assembly; the powder composite material is placed on the forming lower punch assembly, the forming upper punch assembly is adjusted to move downwards, the forming upper punch assembly is butted against the forming lower punch assembly, the powder composite material is pressed into a blank, the forming upper punch assembly moves upwards, and the forming demolding assembly drives the forming lower punch assembly to move downwards to demold the blank. The hot die forging shaping die comprises a shaping upper punch assembly, a shaping lower punch assembly, a main demolding cylinder and a secondary demolding cylinder; the blank is placed on the shaping lower punch assembly, the shaping upper punch assembly is adjusted to move downwards, the shaping upper punch assembly is butted against the shaping lower punch assembly, the blank is shaped into a brake disc, the shaping upper punch assembly moves upwards, the secondary demolding cylinder controls the shaping lower punch assembly to move downwards, and the main demolding cylinder controls the secondary demolding cylinder and the shaping lower punch assembly to move downwards, thereby achieving brake disc demolding.

2. A forming apparatus for manufacturing a brake disc of a powder composite material according to claim 1, characterized in that, The powder forming die is further provided with a forming frame body. The forming upper punch assembly comprises a forming motor installed on the forming frame body, a forming sliding block drivingly connected to the forming motor and an upper punch plate connected to the forming sliding block.

3. A forming apparatus for manufacturing a brake disc of a powder composite material according to claim 2, characterized in that, The forming lower punch assembly comprises a mandrel cylinder, a lower punch, a lower punch plate and a die sleeve; the mandrel cylinder is installed on the forming frame body, the lower punch is connected to the mandrel cylinder, the lower punch plate is installed on the top of the lower punch, the die sleeve surrounds the lower punch and the lower punch plate, and the powder composite material is placed between the lower punch plate and the die sleeve.

4. A forming apparatus for manufacturing a brake disc of a powder composite material according to claim 3, characterized in that, A bushing is arranged between the die sleeve and the lower punch.

5. A forming apparatus for manufacturing a brake disc of a powder composite material according to claim 3, wherein The forming frame body is installed with a guide rod, and the die sleeve is sleeved on the guide rod.

6. A forming apparatus for manufacturing a brake disc of a powder composite material according to claim 3, wherein The forming demolding assembly comprises a forming demolding cylinder installed on the forming frame body, the forming demolding cylinder is provided with a forming demolding shaft which can be telescopically adjusted, the top end of the forming demolding shaft is provided with a forming demolding connecting sleeve, and the forming demolding connecting sleeve is connected to the die sleeve.

7. The forming apparatus for manufacturing a brake disc of a powder composite material according to claim 1, wherein The hot die forging shaping die is further provided with a shaping frame body; the shaping upper punch assembly comprises a shaping motor installed on the shaping frame body, a shaping sliding block drivingly connected to the shaping motor, an upper center cylinder installed on the shaping sliding block and an upper punch connected to the upper center cylinder; the shaping motor can drive the shaping sliding block to move along the height direction, and the upper punch is provided with a first heating pipe.

8. A forming apparatus for manufacturing a brake disc of a powder composite material according to claim 7, characterized in that The main demolding cylinder is installed on the shaping frame body, the top of the main demolding cylinder is connected with an outer ring material lifting disc, and the top of the outer ring material lifting disc is provided with an outer ring lifting rod. The secondary demolding cylinder is installed on the top of the main demolding cylinder, the top of the secondary demolding cylinder is connected with an inner ring material lifting disc, and the top of the inner ring material lifting disc is provided with an inner ring lifting rod. The shaping lower punch assembly comprises a shaping lower punch base, a shaping mold, an outer circle of a lower punch, and an inner circle of the lower punch, the outer circle top rod and the inner circle top rod are arranged in the shaping lower punch base, the shaping lower punch base is installed on a shaping frame body, the shaping mold is installed on the top of the shaping lower punch base, the outer circle of the lower punch is arranged on the top of the outer circle top rod, the inner circle of the lower punch is arranged on the top of the inner circle top rod, and the outer circle of the lower punch is sleeved on the inner circle of the lower punch.

9. A forming apparatus for manufacturing a brake disc of a powder composite material according to claim 8, characterized in that A bushing is arranged between the shaping mold and the outer circle of the lower punch.

10. A forming apparatus for manufacturing a brake disc of a powder composite material according to claim 9, characterized in that, A second heating pipe is arranged in the shaping mold.

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