Molding equipment for manufacturing brake disc from powder composite material

Abstract

The invention relates to the technical field of profiling equipment, in particular to forming equipment for manufacturing a brake disc through a powder composite material, the forming equipment comprises a powder forming die and a hot die forging shaping die, the powder forming die is used for pressing the powder composite material into a blank, and the hot die forging shaping die is used for shaping the blank into the brake disc; the powder forming mold comprises a forming upper punching assembly, a forming lower punching assembly and a forming demolding assembly. The hot die forging shaping die comprises a shaping upper punching assembly, a shaping lower punching assembly, a main demolding cylinder and an auxiliary demolding cylinder. The technical problems that in the prior art, the blank pressing quality is low, the mold replacement efficiency is low, and the difficulty in the demolding stage is large are solved, and by arranging the complete brake disc production line, the brake disc manufacturing efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of press forming equipment, in particular to a forming equipment for manufacturing brake discs using powder composite materials. Background Art

[0002] Existing brake disc manufacturing processes generally involve discontinuous processes, resulting in low production efficiency and significantly reducing productivity. Existing single-material components, due to their inherent limitations, are no longer able to meet the increasingly complex and diverse demands of industry. Currently, mold replacement efficiency in this area is low, requiring frequent mold changes during brake disc production, leading to production equipment stagnation and impacting production efficiency. During the demolding phase, due to the complex shape of composite brake discs, demolding is difficult, and existing demolding structures often fail to achieve smooth demolding, easily resulting in product damage or surface defects, increasing scrap rates and reducing production efficiency. Summary of the Invention

[0003] The present invention aims to address at least one of the technical problems existing in the related art. To this end, the present invention provides a molding machine for brake discs made of powder composite materials. This machine addresses the existing technical issues of low blank pressing quality, inefficient mold replacement, and difficulty in the demolding stage. By establishing a complete brake disc production line, the production efficiency of brake discs is improved.

[0004] The present invention provides a forming device for manufacturing brake discs from powder composite materials, comprising a powder forming die and a hot forging shaping die. The powder forming die is used to press the powder composite material into a blank, and the hot forging shaping die is used to shape the blank into a brake disc. The powder forming die comprises a forming upper punch assembly, a forming lower punch assembly and a forming demoulding assembly. The powder composite material is placed on the forming lower punch assembly, and then the forming upper punch assembly is adjusted to move downward so that the forming upper punch assembly docks with the forming lower punch assembly, thereby pressing the powder composite material into a blank. The forming upper punch assembly then moves upward, and then the forming demoulding assembly drives the forming lower punch assembly to move downward to demould the blank. The hot forging shaping die includes a shaping upper punch assembly, a shaping lower punch assembly, a main demolding cylinder and an auxiliary demolding cylinder. 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 docked with the shaping lower punch assembly, thereby shaping the blank into a brake disc. The shaping upper punch assembly is then moved upward, and then the auxiliary demolding cylinder controls the shaping lower punch assembly to move downward, and the main demolding cylinder controls the auxiliary demolding cylinder and the shaping lower punch assembly to move downward, thereby realizing demolding of the brake disc.

[0005] A further improvement of the molding equipment for manufacturing brake discs of a powder composite material of the present invention is that the powder molding die is further provided with a molding frame; The forming upper punch assembly includes a forming motor installed on a forming frame, a forming slider drivingly connected to the forming motor, and an upper punch plate connected to the forming slider.

[0006] A further improvement of the powder composite material forming equipment for making brake discs of the present invention is that the forming lower punch assembly includes a core shaft cylinder, a lower punch, a lower punch plate and a die sleeve, the core shaft cylinder is installed on the forming frame, the lower punch is connected to the core shaft cylinder, the lower punch plate is installed on the top of the lower punch, the die sleeve is arranged around the lower punch and the lower punch plate, and the powder composite material is placed between the lower punch plate and the die sleeve.

[0007] A further improvement of the molding equipment for manufacturing brake discs from powder composite materials of the present invention is that a bushing is provided between the die sleeve and the lower punch.

[0008] A further improvement of the molding equipment for manufacturing brake discs from powder composite materials of the present invention is that the molding frame is installed with a guide rod, and the mold sleeve is sleeved on the guide rod.

[0009] A further improvement of the molding equipment for making brake discs of powder composite materials of the present invention is that the molding and demolding assembly includes a molding and demolding cylinder installed on the molding frame, the molding and demolding cylinder has a telescopically adjustable molding and demolding shaft, and the top end of the molding and demolding shaft is provided with a molding and demolding connecting sleeve, and the molding and demolding connecting sleeve is connected to the mold sleeve.

[0010] A further improvement of the forming equipment for making brake discs of powder composite materials according to the present invention is that the hot forging shaping die is also provided with a shaping frame; the shaping upper punch assembly includes a shaping motor installed on the shaping frame, a shaping slider drivingly connected to the shaping motor, an upper center cylinder installed on the shaping slider, and an upper punch connected to the upper center cylinder; the shaping motor can drive the shaping slider to move in the height direction, and a first heating tube is provided in the upper punch.

[0011] A further improvement of the molding equipment for producing brake discs from powder composite materials of the present invention is that the main demoulding cylinder is mounted on the shaping frame, the top of the main demoulding cylinder is connected to an outer ring ejecting plate, and the top of the outer ring ejecting plate is provided with an outer ring ejector rod; The auxiliary demoulding cylinder is installed on the top of the main demoulding cylinder, the top of the auxiliary demoulding cylinder is connected to the inner ring ejecting plate, and the top of the inner ring ejecting plate is provided with an inner ring ejector rod; The shaping lower punch assembly includes a shaping lower punch base, a shaping die, a lower punch outer ring and a lower punch inner ring. The outer ring push rod and the inner ring push rod are passed through the shaping lower punch base, the shaping lower punch base is installed on the shaping frame, 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 push rod, the lower punch inner ring is arranged on the top of the inner ring push rod, and the lower punch outer ring is sleeved on the lower punch inner ring.

[0012] A further improvement of the molding equipment for manufacturing brake discs from powder composite materials of the present invention is that a bushing is provided between the shaping die and the outer ring of the lower punch.

[0013] A further improvement of the molding equipment for manufacturing brake discs from powder composite materials of the present invention is that a second heating tube is provided in the molding die.

[0014] In the powder forming die of the forming equipment for making brake discs of powder composite materials of the present invention, during the blank pressing and forming process, the powder composite material is compressed, generating lateral pressure on the inner wall of the die sleeve, and the lateral pressure generates friction. The die sleeve passively moves downward as the powder composite material is compressed, and the lower punch at the bottom of the die and the die sleeve are displaced, thereby actively compressing the powder composite material at the bottom. The entire process realizes floating pressing, so that the upper and lower parts of the powder composite material are subjected to equivalent pressure, making the blank density more uniform. After the blank is pressed, the forming upper punch assembly continues to maintain pressure on the blank. At this time, the forming demoulding cylinder slowly pulls down the die sleeve. 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 relative movement of the blank and the side wall of the die will not cause damage to the workpiece.

[0015] During the operation of the hot forging shaping die in the forming equipment for making brake discs of powder composite materials of the present invention, due to the complex surface of the brake disc and the large difference in the horizontal surface size, it is impossible to press and mold and demold at one time, and multiple stages of edge pressing and demolding are required. When the blank is shaped, the pressure of the shaping slider is transmitted to the periphery of the blank through the upper center cylinder. After the periphery is pressed, the upper center cylinder presses down to shape the complex surface in the center of the blank; when demolding, the main and auxiliary demolding cylinders are first pushed out at the same time to demold the brake disc and the side wall of the shaping mold, and then the auxiliary demolding cylinder continues to demold, so that the outer ring of the brake disc is demolded from the shaping mold, and finally the second manipulator takes the material to demold the workpiece.

[0016] The present invention provides a molding device for producing brake discs from powder composite materials, which realizes an efficient, precise and continuous automated production process. The molding device not only optimizes the pressing process of the powder composite materials, but also significantly improves the molding quality and production efficiency of the brake discs. The floating pressing technology ensures the uniformity of the blank density, and avoids material waste and workpiece quality problems caused by uneven pressure. At the same time, the hot forging shaping die makes it possible to form complex surfaces of the brake disc, meeting the strict requirements of high-performance brake discs for precision and strength. The application of multi-stage demolding technology effectively solves the demolding problem caused by the complex surface of the brake disc, and further improves production efficiency and product quality.

[0017] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 It is a schematic diagram of a molding device for manufacturing brake discs using a powder composite material provided by the present invention.

[0020] Figure 2 The present invention provides a schematic diagram of a powder forming mold in a forming device for manufacturing brake discs using a powder composite material.

[0021] Figure 3 The present invention provides a schematic diagram of a hot forging shaping die in a molding device for manufacturing brake discs using powder composite materials.

[0022] Figure 4 The present invention provides a schematic diagram of the working process of a powder forming mold in a forming device for producing brake discs using powder composite materials.

[0023] Figure 5 The present invention provides a schematic diagram of the working process of a hot forging shaping die in a molding device for manufacturing brake discs using powder composite materials.

[0024] Reference numerals: 1. Powder forming die; 2. Hot forging shaping die; 3. Transmission device; 4. First manipulator; 5. Second manipulator; 6. External transmission device; 101. Forming upper die base; 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 demoulding cylinder; 111. Forming demoulding shaft; 112. Forming demoulding connecting sleeve; 201. Forming slider; 20 2. Upper center cylinder; 203. Upper punch; 204. Shaping plate; 205. First heating tube; 211. Main demoulding cylinder; 212. Auxiliary mounting plate; 213. Outer ring ejector plate; 214. Outer ring ejector rod; 215. Lower punch outer ring; 216. Auxiliary demoulding cylinder; 217. Inner ring ejector plate; 218. Inner ring ejector rod; 219. Lower punch inner ring; 220. Shaping lower punch base; 221. Shaping die; 222. Second heating tube; 223. Second bushing; 224. Lower punch core shaft. DETAILED DESCRIPTION

[0025] To make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0026] The following combination Figures 1 to 3 The present invention describes a forming device for making brake discs from powder composite materials, including a powder forming mold 1 and a hot forging forming mold 2. The powder forming mold 1 is used to press the powder composite material into a blank, and the hot forging forming mold 2 is used to shape the blank into a brake disc. A first manipulator 4 and a heating furnace are provided on the side of the powder forming mold 1, and a second manipulator 5 is provided on the side of the hot forging forming mold 2. A transmission device 3 is provided between the first manipulator 4 and the second manipulator 5. The blank pressed by the powder forming mold 1 is transferred to the heating furnace by the first manipulator 4 for high-temperature shaping of the blank, and then the first manipulator 4 transfers the blank to the transmission device 3, and the transmission device 3 transfers the blank to the position corresponding to the second manipulator 5, and the second manipulator 5 transfers the blank to the hot forging forming mold 2.

[0027] Preferably, an external transport device 6 is also provided at the position of the second manipulator 5 to facilitate the transportation of the manufactured brake disc.

[0028] In a preferred implementation case, Figure 2As shown, the powder forming mold 1 includes 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, 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, thereby pressing 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, thereby easily realizing the demolding of the blank, reducing manual intervention and reducing production costs.

[0029] Specifically, the powder forming die 1 is further provided with a forming frame; the forming upper punch assembly includes a forming motor installed on the forming frame, a forming slider drivingly connected to the forming motor, and an upper punch plate 102 connected to the forming slider.

[0030] Preferably, the forming frame has an upper forming beam and a lower forming beam, the forming motor is installed on the upper forming beam, the bottom of the forming slider is fixedly connected to the upper forming die base 101, and the upper punch plate 102 is detachably connected to the upper forming die base 101.

[0031] Preferably, the upper punch plate 102 can be connected to the forming upper die base 101 by magnetic attraction, or can be connected to the forming upper die base 101 by snap-fitting.

[0032] Preferably, the shape of the upper punch plate 102 matches the shape of the blank to be formed. By replacing the upper punch plate 102, blanks of different shapes can be pressed, which greatly improves the flexibility and applicability of the mold.

[0033] Furthermore, if Figure 2 As shown, the forming lower punch assembly includes a core shaft cylinder 103, a lower punch 105, a lower punch plate 106 and a die sleeve 107. The core shaft cylinder 103 is installed on the lower crossbeam of the forming frame, the lower punch 105 is connected to the forming core shaft 104 of the core shaft cylinder 103, the lower punch plate 106 is installed on the top of the lower punch 105, and the die sleeve 107 is surrounded by the lower punch 105 and the lower punch plate 106. The powder composite material is placed between the lower punch plate 106 and the die sleeve 107.

[0034] Preferably, if Figure 2 As shown, the top shape of the lower punch plate 106 matches the bottom shape of the blank to be formed, and the die sleeve 107 is arranged around the lower punch 105 and the lower punch plate 106. By changing the position of the die sleeve 107 relative to the lower punch 105, the blank can be easily demolded.

[0035] Preferably, if Figure 2As shown, a first bushing 109 is provided between the die sleeve 107 and the lower punch 105. The first bushing 109 can effectively reduce the friction between the die sleeve 107 and the lower punch 105, protect the die sleeve 107 from wear, and extend the service life of the die sleeve 107. The first bushing can also provide better sealing performance to prevent leakage of powder composite materials during the pressing process, thereby ensuring the molding quality of the blank.

[0036] Preferably, the first bushing 109 can be made of a wear-resistant and high-temperature resistant material to adapt to a high-temperature and high-pressure molding environment.

[0037] Preferably, if Figure 2 As shown, the molding frame is mounted with guide rods 108, onto which the mold sleeve 107 is mounted. The provision of guide rods 108 not only enhances the overall structural stability of the mold but also ensures precise guidance of the mold sleeve 107 during movement, preventing molding errors caused by deviation or wobbling of the mold sleeve 107. The design in which the mold sleeve 107 moves along the guide rods 108 allows the powder molding mold 1 to be flexibly adjusted during operation to accommodate the molding requirements of brake discs of varying specifications, thereby enhancing the versatility and production efficiency of the powder molding mold 1.

[0038] Furthermore, if Figure 2 As shown, the molding and demolding assembly includes a molding and demolding cylinder 110 installed on the molding frame. The molding and demolding cylinder 110 has a telescopically adjustable molding and demolding shaft 111. The top of the molding and demolding shaft 111 is provided with a molding and demolding connecting sleeve 112, and the molding and demolding connecting sleeve 112 is connected to the mold sleeve 107.

[0039] Preferably, if Figure 2 As shown, the mold-ejection cylinder 110 is mounted on the lower crossbeam of the mold, and the vertical cross-section of the mold-ejection connecting sleeve 112 is I-shaped. The mold-ejection connecting sleeve 112 includes a first clamping portion, a first shaft portion, and a second clamping portion. The top of the mold sleeve 107 is formed with a first clamping groove, the first clamping portion is clamped in the first clamping groove, the first shaft portion is passed through the mold sleeve 107, and the top surface of the second clamping portion abuts the top surface of the mold sleeve 107. The mold-ejection connecting sleeve 112 improves the connection stability with the mold sleeve 107, and even in the case of high-pressure demolding, it can effectively prevent the mold sleeve 107 from loosening or falling off, thereby ensuring the dimensional accuracy and surface quality of the finished brake disc. In addition, the structural design of the first clamping portion, the first shaft portion, and the second clamping portion is reasonable, which is not only convenient for installation and disassembly, but also ensures the tightness of the connection, providing a strong guarantee for the efficient and stable operation of the mold.

[0040] Preferably, if Figure 2 As shown, a position sensor is provided on the core cylinder 103 and is located at the bottom of the die sleeve 107 . The position sensor is used to prevent the die sleeve 107 and the lower punch 105 from being dislocated or separated.

[0041] Furthermore, if Figure 3 As shown, the hot forging shaping die 2 includes a shaping upper punch assembly, a shaping lower punch assembly, a main demolding cylinder 211 and an auxiliary 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 docked with the shaping lower punch assembly, thereby shaping the blank into a brake disc, and then the shaping upper punch assembly moves upward, and then the auxiliary demolding cylinder 216 controls the shaping lower punch assembly to move downward, and the main demolding cylinder 211 controls the auxiliary demolding cylinder 216 and the shaping lower punch assembly to move downward, thereby realizing demolding of the brake disc.

[0042] Specifically, if Figure 3 As shown, the hot forging shaping die 2 is also provided with a shaping frame, which includes a shaping upper crossbeam and a shaping lower crossbeam; the shaping upper punch assembly includes a shaping motor installed on the shaping upper crossbeam, a shaping slider 201 driven and connected to the shaping motor, an upper center cylinder 202 installed 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 connected to the driving of the shaping motor so that the shaping slider 201 can move in the height direction, thereby achieving accurate stamping of the blank. This design ensures the stability and accuracy of the shaping process and avoids deformation or damage of the blank caused by inaccurate stamping.

[0043] Preferably, a shaping plate 204 is provided at the bottom of the upper punch 203 , and the shaping plate 204 matches the shape of the brake disc to be formed.

[0044] Specifically, a first heating tube 205 is provided in the upper punch 203. The upper punch 203 is heated by the first heating tube 205 so that the upper punch 203 has a certain temperature, which can facilitate the shaping of the blank, improve the shaping efficiency and shaping quality, and the heated upper punch 203 can better contact with the blank, reduce friction and resistance during the shaping process, and make the shaping process smoother.

[0045] Furthermore, if Figure 3 As shown, the main demoulding cylinder 211 is installed on the shaping lower crossbeam of the shaping frame, the top of the main demoulding cylinder 211 is connected to the outer ring ejecting plate 213, and the top of the outer ring ejecting plate 213 is provided with an outer ring ejector rod 214; The auxiliary demoulding cylinder 216 is installed on the top of the main demoulding cylinder 211. The top of the auxiliary demoulding cylinder 216 is connected to the inner ring ejecting plate 217. The top of the inner ring ejecting plate 217 is provided with an inner ring ejector rod 218. The shaping lower punch assembly includes a shaping lower punch base 220, a shaping die 221, a lower punch outer ring 215, and a lower punch inner ring 219. The outer ring push rod 214 and the inner ring push rod 218 are inserted into the shaping lower punch base 220. The shaping lower punch base 220 is mounted on the shaping lower crossbeam of the shaping frame. The shaping die 221 is mounted 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 push rod 214. The lower punch inner ring 219 is arranged on the top of the inner ring push rod 218. The lower punch outer ring 215 is sleeved on the lower punch inner ring 219. The outer ring ejecting plate 213 and the auxiliary ejecting cylinder 216 are driven to move in the height direction by the main ejecting cylinder 211, so as to drive the outer ring ejecting rod 214 to move in the height direction, thereby driving the lower punch outer ring 215 to move in the height direction, and the inner ring ejecting plate 217 is driven to move in the height direction by the auxiliary ejecting cylinder 216, so as to drive the inner ring ejecting rod 218 to move in the height direction, thereby driving the lower punch inner ring 219 to move in the height direction.

[0046] Preferably, an auxiliary mounting plate 212 is provided on the top of the main demoulding cylinder 211 , the auxiliary demoulding cylinder 216 is mounted on the auxiliary mounting plate 212 , and the outer ring ejecting plate 213 is mounted on the top of the auxiliary mounting plate 212 .

[0047] Preferably, a receiving groove is formed in the middle position of the outer ring top material disc 213, the inner ring top material disc 217 is located in the receiving groove, and a gap is left between the inner ring top material disc 217 and the inner wall of the receiving groove to ensure that during the top material process, the inner ring top material disc 217 can move up and down smoothly without being restricted by the receiving groove. The receiving groove can play a role in positioning the inner ring top material disc 217, so that the inner ring top material disc 217 can remain stable during the top material process without offset or shaking.

[0048] Specifically, a first limiting groove is provided at the bottom of the shaping lower punch base 220 corresponding to the position of the outer ring push rod 214, and a first limiting ring is provided at the position of the outer ring push rod 214 corresponding to the first limiting groove. The first limiting groove and the outer ring push rod 214 are provided in a one-to-one correspondence, and the first limiting ring and the first limiting groove can prevent the outer ring push rod 214 from being over-adjusted.

[0049] Specifically, a second limiting groove is provided at the bottom of the shaping lower punch base 220 corresponding to the position of all the inner ring push rods 218, and a second limiting ring is provided at the position of the inner ring push rods 218 corresponding to the second limiting groove. The first limiting ring is connected to all the inner ring push rods 218. The second limiting ring and the second limiting groove can avoid excessive adjustment of the inner ring push rods 218. 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, thereby improving the accuracy and efficiency of the brake disc molding.

[0050] Preferably, a second bushing 223 is provided between the shaping die 221 and the lower punch outer ring 215 . The second bushing 223 can effectively reduce the friction between the shaping die 221 and the lower punch outer ring 215 , thereby extending the service life of the shaping die 221 .

[0051] Specifically, a second heating tube 222 is installed within the shaping mold 221. This heats the interior of the mold 221, ensuring uniform heating of the brake disc during the molding process and preventing deformation or cracking caused by uneven temperatures. Furthermore, the second heating tube 222 improves the molding efficiency of the brake disc and shortens the production cycle. The tight integration of the second heating tube 222 with the shaping mold 221 effectively prevents heat loss and conserves energy.

[0052] Preferably, a lower punch core shaft 224 is provided in the middle of the lower punch inner ring 219 , and an axial hole is provided at the bottom of the shaping plate 204 corresponding to the lower punch core shaft 224 , so that the formed brake disc can have a set shape.

[0053] In a specific implementation case, Figure 4 As shown, Figure 4 As shown in a, the powder composite material is placed on the lower punch plate 106 of the powder forming die 1, and then the forming upper punch assembly moves downward so that the forming upper punch assembly and the forming lower punch assembly fit together to press the powder composite material, and then the forming upper punch assembly moves upward; Figure 4 As shown in b, the top material required for blank forming is installed on the upper punch plate 102; Figure 4 As shown in c, the forming upper punch assembly moves downward; Figure 4 As shown in FIG. d, the upper punch assembly and the lower punch assembly are pressed together to form a blank; Figure 4 As shown in Figure e, the forming upper punch assembly moves upward, and the forming demoulding assembly works to demould the blank; Figure 4 As shown in middle f, the forming upper punch assembly and the forming lower punch assembly are separated, which makes it easier for the first manipulator 4 to grab the blank.

[0054] In a specific implementation case, Figure 5 As shown, Figure 5 As shown in 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; Figure 5 As shown in b, the shaping upper punch assembly moves downward quickly to perform stamping to shape the blank into a brake disc; Figure 5 As shown in c, the shaping upper punch assembly continues to apply pressure to the brake disc after shaping to maintain the pressure so that the shape of the brake disc is stable; Figure 5 As shown in d, the shaping upper punch assembly moves upward, and at the same time the main demoulding cylinder 211 works to initially demould the brake disc; Figure 5 As shown in Figure e, the secondary demoulding cylinder 216 performs secondary demoulding to facilitate the second manipulator 5 to take the material; Figure 5 As shown in middle f, the auxiliary demoulding cylinder 216 and the main demoulding cylinder 211 work to make the lower punch inner ring 219 and the lower punch outer ring 215 move downward and reset.

[0055] Preferably, during the blank pressing process, the powder composite material is compressed, which generates lateral pressure on the inner wall of the die sleeve 107, and the lateral pressure generates friction. The die sleeve 107 passively moves downward as the powder composite material is compressed, and the lower punch 105 at the bottom of the mold and the die sleeve 107 are displaced, so that the powder composite material at the bottom is actively compressed. The entire process realizes floating pressing, so that the upper and lower parts of the powder composite material are subjected to equivalent pressure, making the density of the blank more uniform.

[0056] Preferably, after the blank is pressed, the forming upper punch assembly continues to maintain pressure on the blank. At this time, the forming demolding 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, and the workpiece will not be damaged due to the relative movement of the blank and the side wall of the mold.

[0057] Preferably, during the operation of the hot forging shaping mold 2, due to the complex shape of the brake disc and the large difference in horizontal surface dimensions, it is impossible to press and demold at one time, and multiple stages of edge pressing and demolding are required. When the blank is shaped, the pressure of the shaping slider 201 is transmitted to the periphery of the blank through the upper center cylinder 202. After the periphery is pressed, the upper center cylinder 202 presses down to shape the complex surface in the center of the blank; when demolding, the main and auxiliary demolding cylinders 216 are first pushed out at the same time to demold the brake disc and the side wall of the shaping mold 221, and then the auxiliary demolding cylinder 216 continues to demold, so that the outer ring of the brake disc is demolded from the shaping mold 221, and finally the second manipulator 5 takes the material to demold the workpiece.

[0058] Preferably, the connections of the various components of the powder forming die 1 enable quick replacement. When the workpiece specification needs to be changed, the components that need to be replaced are the upper die base 101, upper punch plate 102, die sleeve 107, lower punch 105, lower punch plate 106, and first bushing 109. These components are bound together into a single die within the powder forming die 1. A die-changing arm can be used to replace another set of dies installed outside the machine with the internal die, enabling quick die changes. The overall die change time is expected to be no more than one hour, improving production efficiency and reducing downtime during die changes.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A molding device for producing brake discs from powder composite materials, characterized in that: It includes a powder forming die and a hot forging shaping die, wherein the powder forming die is used to press the powder composite material into a blank, and the hot forging shaping die is used to shape the blank into a brake disc; The powder forming die comprises a forming upper punch assembly, a forming lower punch assembly and a forming demoulding assembly. The powder composite material is placed on the forming lower punch assembly, and then the forming upper punch assembly is adjusted to move downward so that the forming upper punch assembly docks with the forming lower punch assembly, thereby pressing the powder composite material into a blank. The forming upper punch assembly then moves upward, and then the forming demoulding assembly drives the forming lower punch assembly to move downward to demould the blank. The hot forging shaping die includes a shaping upper punch assembly, a shaping lower punch assembly, a main demolding cylinder and an auxiliary demolding cylinder. 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 docked with the shaping lower punch assembly, thereby shaping the blank into a brake disc. The shaping upper punch assembly is then moved upward, and then the auxiliary demolding cylinder controls the shaping lower punch assembly to move downward, and the main demolding cylinder controls the auxiliary demolding cylinder and the shaping lower punch assembly to move downward, thereby realizing demolding of the brake disc.

2. The molding equipment for producing brake discs from powder composite materials according to claim 1, characterized in that: The powder forming die is also provided with a forming frame; The forming upper punch assembly includes a forming motor installed on a forming frame, a forming slider drivingly connected to the forming motor, and an upper punch plate connected to the forming slider.

3. The powder composite material forming equipment for producing brake discs according to claim 2, characterized in that: The forming lower punch assembly includes a core shaft cylinder, a lower punch, a lower punch plate and a die sleeve, the core shaft cylinder is installed on the forming frame, the lower punch is connected to the core shaft cylinder, the lower punch plate is installed on the top of the lower punch, the die sleeve is surrounded by 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. The powder composite material forming equipment for producing brake discs according to claim 3, characterized in that: A bushing is provided between the die sleeve and the lower punch.

5. The molding equipment for producing brake discs from powder composite materials according to claim 3, characterized in that: The forming frame is provided with a guide rod, and the mold sleeve is sleeved on the guide rod.

6. The powder composite material forming equipment for producing brake discs according to claim 3, characterized in that: The molding demoulding assembly includes a molding demoulding cylinder installed on the molding frame, the molding demoulding cylinder has a telescopically adjustable molding demoulding shaft, the top end of the molding demoulding shaft is provided with a molding demoulding connecting sleeve, and the molding demoulding connecting sleeve is connected to the mold sleeve.

7. The powder composite material forming equipment for manufacturing brake discs according to claim 1, characterized in that: The hot forging shaping die is also provided with a shaping frame; the shaping upper punch assembly includes a shaping motor installed on the shaping frame, a shaping slider driven and connected to the shaping motor, an upper center cylinder installed on the shaping slider, and an upper punch connected to the upper center cylinder. The shaping motor can drive the shaping slider to move in the height direction, and a first heating tube is provided in the upper punch.

8. The molding equipment for producing brake discs from powder composite materials according to claim 7, characterized in that: The main demoulding cylinder is installed on the shaping frame, the top of the main demoulding cylinder is connected to the outer ring ejecting plate, and the top of the outer ring ejecting plate is provided with an outer ring ejector rod; The auxiliary demoulding cylinder is installed on the top of the main demoulding cylinder, the top of the auxiliary demoulding cylinder is connected to the inner ring ejecting plate, and the top of the inner ring ejecting plate is provided with an inner ring ejector rod; The shaping lower punch assembly includes a shaping lower punch base, a shaping die, a lower punch outer ring and a lower punch inner ring. The outer ring push rod and the inner ring push rod are passed through the shaping lower punch base, the shaping lower punch base is installed on the shaping frame, 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 push rod, the lower punch inner ring is arranged on the top of the inner ring push rod, and the lower punch outer ring is sleeved on the lower punch inner ring.

9. The molding equipment for producing brake discs from powder composite materials according to claim 8, characterized in that: A bushing is provided between the shaping die and the outer ring of the lower punch.

10. The molding equipment for producing brake discs from powder composite materials according to claim 9, characterized in that: A second heating tube is provided in the shaping mold.

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