A metal plate stamping processing device and a stamping processing method of an aluminum alloy forging

Abstract

The application discloses a metal plate stamping processing equipment and a stamping processing method of an aluminum alloy forge piece, relates to the technical field of metal stamping forming equipment, and discloses the following technical scheme: two groups of brushing rollers are arranged on the feeding end of the lower die and the upper die, so that the two groups of brushing rollers are used for respectively rolling and coating lubricant on the upper surface and the lower surface of the metal plate during the feeding and loading of the metal plate; then the metal plate with the lubricant is conveyed between the lower die and the upper die, and the lower die and the upper die are used for stamping and plasticizing the metal plate; since the surface of the metal plate is uniformly coated with the lubricant, the frictional resistance between the metal plate and the lower die and the upper die during stamping can be reduced, the metal plate, the lower die and the upper die are prevented from being abraded or scratched, the demolding of the subsequent stamping piece is facilitated, and compared with the method of coating the lubricant on the surface of the die before stamping, the method of coating the lubricant on the surface of the metal plate during feeding and loading does not interrupt the stamping processing flow, and is beneficial to improving the continuity of stamping operation and the overall processing efficiency.

Description

Technical Field

[0001] This invention belongs to the technical field of metal stamping and forming equipment, and more specifically, it relates to a metal plate stamping processing equipment and a stamping processing method for aluminum alloy forgings. Background Technology

[0002] Metal sheet stamping is a highly efficient cold working process that uses dies to apply pressure to metal sheets, causing them to undergo plastic deformation and thus obtain the desired shape. Its core lies in using a punch press to drive a punch and die to stamp and form the sheet metal. This process boasts advantages such as high production efficiency, good dimensional consistency, and high material utilization, and is widely used in the manufacturing of automotive body panels, electronic components, appliance housings, and high-strength aluminum alloy forgings for aerospace applications.

[0003] For example, Chinese patent CN113941637B discloses a sheet metal stamping equipment, including a base, a hydraulic column, an upper and lower die flipping mechanism, a support column, a first slide and a second slide. A support is fixedly connected to the top of the base, and a hydraulic column is installed on the top of the support. The output end of the hydraulic column is arranged opposite to the top of the base, and a die is fixedly connected to the output end, which can perform stamping processing on sheet metal parts.

[0004] Currently, during the stamping process of metal sheets, the extremely high instantaneous pressure during stamping causes intense friction between the metal sheet and the die surface. To reduce wear and scratches on the die and stamped parts, and to facilitate subsequent demolding, lubricant is usually applied to the die surface before stamping to reduce the coefficient of friction and weaken adhesion. However, existing lubrication methods mostly involve spraying or brushing before loading the material. This method is not only cumbersome but also interrupts the production process, affecting the continuity of stamping operations and overall processing efficiency. Summary of the Invention

[0005] In view of the problems in the related technologies, the present invention proposes a metal plate stamping equipment and a stamping method for aluminum alloy forgings, so as to overcome the above-mentioned technical problems existing in the existing related technologies.

[0006] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: This invention relates to a metal sheet stamping processing equipment, including a stamping section, wherein the stamping section includes a lower die and an upper die, and the lower die and the upper die can stamp and shape the metal sheet when the die is closed; It also includes a lubrication section located at the feeding end of the lower mold and the upper mold. The lubrication section includes two sets of brushing rollers, which can roll and abut against the upper and lower surfaces of the metal plate respectively when the metal plate is conveyed between the lower mold and the upper mold. The surface of the coating roller is fitted with a coating brush, and the inside of the coating roller is provided with a lubricant supply section. One end of the lubricant supply section is connected to an external lubricant conveying device, and the other end of the lubricant supply section is connected to the coating brush, so that the lubricant conveying device can deliver the lubricant to the coating brush through the lubricant supply section, and then the coating brush rolls the lubricant onto the surface of the metal plate. The coating roller is also equipped with a seal located at the outlet of the lubricant supply section. The seal can be opened when the lubricant conveying equipment is conveying lubricant so that the lubricant can be delivered into the coating brush. The seal can also seal the outlet of the lubricant supply section when the lubricant conveying equipment stops conveying lubricant and can draw the lubricant in the outlet of the lubricant supply section back inward.

[0007] Preferably, the stamping part further includes a base, the lower die is fixedly installed on the top surface of the base, a support column is fixedly installed on the top surface of the base, a top seat is fixedly installed on the top of the support column, and a stamping drive unit is installed on the top seat. The stamping drive unit can drive the upper die to move downward to close with the lower die or drive the upper die to move upward to open.

[0008] Preferably, the stamping drive unit includes a slide rail and a hydraulic shaft. The hydraulic shaft is fixedly installed on the top seat, and a stamping seat is fixedly installed on the telescopic end at the bottom of the hydraulic shaft. The stamping seat slides in cooperation with the slide rail, and the upper die is fixedly installed on the bottom surface of the stamping seat.

[0009] Preferably, the coating roller further includes a mandrel, and an inner support roller body is fixedly installed on the outer ring of the mandrel. The coating brush is fixedly fitted on the outer ring of the inner support roller body, and the outer ring of the inner support roller body is provided with a plurality of flow guiding units that communicate with the lubricant supply unit. The plurality of flow guiding units are equidistantly distributed along the axial direction of the inner support roller body, and the flow guiding units can uniformly guide and deliver the lubricant supplied by the lubricant supply unit into the coating brush.

[0010] Preferably, the flow guiding unit includes multiple flow guiding grooves, which are circumferentially and equidistantly distributed on the surface of the inner support roller. Each flow guiding groove is distributed along the axial direction of the inner support roller, so that the multiple flow guiding units can form a flow guiding and conveying channel densely distributed on the surface of the inner support roller through the flow guiding grooves.

[0011] Preferably, the lubricant supply unit includes a lubricant delivery channel, which is disposed inside the mandrel and communicates with the lubricant delivery equipment. Multiple inlet channels corresponding to the guide channels extend from the lubricant delivery channel. A sealing groove is connected to the end of each inlet channel, and an outlet communicating with the corresponding guide channel is provided at one end of the sealing groove. The sealing element can seal the sealing groove to isolate the inlet channel and the outlet. The sealing element can also release the seal on the sealing groove when the lubricant delivery equipment delivers lubricant to the lubricant delivery channel, allowing the lubricant in the lubricant delivery channel to be delivered to the guide channel via the inlet channel, the sealing groove, and the outlet.

[0012] Preferably, the sealing element includes a pressure chamber, one end of which is provided with a liquid inlet channel connected to the lubricant delivery channel, a piston is slidably and slidably installed inside the pressure chamber, a piston rod is fixedly installed at one end of the piston, one end of the piston rod slides into the sealing groove and is fixedly installed with a sealing plug that can slidably seal the sealing groove, and a return spring is fitted on the piston rod and abuts against the side of the piston. The piston rod and the sealing plug are provided with a back suction channel. One end of the back suction channel is connected to the liquid outlet, and the other end of the back suction channel is connected to the pressure chamber. A frustum-shaped guide head is fixedly installed on the outer ring of the end of the sealing plug.

[0013] Preferably, friction rollers are also fixedly installed at both ends of the mandrel. The friction rollers can rotate under the frictional resistance when the metal plate is moved and conveyed, and drive the mandrel, inner support roller and coating brush to rotate synchronously, so that the coating brush rolls and coats the lubricant onto the surface of the metal plate.

[0014] Preferably, the lubrication part further includes a bracket, the upper side of which is provided with a sliding groove, a sliding seat is installed inside the sliding groove, a brush roller is rotatably mounted on the sliding seat, another brush roller located below the brush roller is also rotatably mounted on the bracket, and an elastic telescopic module abutting against the upper part of the sliding seat is also installed on the bracket. The elastic telescopic module includes a limiting guide sleeve and a connecting seat. The limiting guide sleeve is fixedly installed on the bracket, and the connecting seat is fixedly installed on one side of the sliding seat. A limiting rod is fixedly installed on the top surface of the connecting seat. The limiting rod is slidably inserted into the inside of the limiting guide sleeve, and a pressure spring that abuts against the top surface of the connecting seat is fitted on the limiting rod. The end of the coating roller is rotatably mounted with an adapter that communicates with the lubricant supply unit, and one side of the adapter is provided with a liquid inlet for communicating with the lubricant delivery equipment.

[0015] This invention also discloses a stamping method for aluminum alloy forgings, the specific steps of which are as follows: The aluminum alloy sheet is fed between the lower and upper dies through the gap between the upper and lower sets of coating rollers. At the same time, the lubricant conveying equipment delivers the lubricant to the coating brush through the lubricant supply section, and then the coating brush rolls the lubricant onto the surface of the aluminum alloy sheet. After the aluminum alloy sheet is conveyed through the gap between the upper and lower sets of coating rollers and reaches the stamping station between the lower and upper dies, the upper die moves down and closes with the lower die to stamp the aluminum alloy sheet into an aluminum alloy forging. At this time, the lubricant conveying equipment stops conveying lubricant, and the sealing component seals the outlet of the lubricant supply section and draws the lubricant in the outlet of the lubricant supply section back inward.

[0016] The present invention has the following beneficial effects: 1. In this invention, two sets of coating rollers are provided at the feeding ends of the lower and upper dies. When the metal plate is fed between the lower and upper dies, the two sets of coating rollers roll against the upper and lower surfaces of the metal plate, respectively. Thus, when the metal plate is fed, the upper and lower sets of coating rollers roll and coat the upper and lower surfaces of the metal plate with lubricant. Then, the metal plate with lubricant is fed between the lower and upper dies, where the lower and upper dies work together to stamp and plasticize the metal plate. Since the surface of the metal plate is uniformly coated with lubricant, the frictional resistance between the metal plate and the lower and upper dies during stamping is reduced, preventing wear or scratches on the metal plate, lower die, and upper die. This is beneficial to improving the service life of the die and the stamping quality, and also facilitates the demolding of subsequent stamped parts. Moreover, compared to applying lubricant to the die surface before stamping, this invention applies lubricant to the surface of the metal plate during feeding and conveying without interrupting the stamping process, which is beneficial to improving the continuity of stamping operations and overall processing efficiency.

[0017] 2. In this invention, a coating brush is mounted on the surface of the coating roller, and a lubricant supply unit connected to an external lubricant delivery device is provided inside the coating roller. This allows the lubricant delivery device to continuously deliver lubricant to the coating brush via the lubricant supply unit, and then the coating brush rolls the lubricant onto the surface of the metal plate. This enables continuous and automated coating of the lubricant, making the coating process more efficient and convenient, thereby further improving the stamping efficiency of the stamping equipment.

[0018] 3. In this invention, a seal is installed inside the coating roller at the outlet of the lubricant supply section. The seal can be opened when the lubricant conveying equipment is conveying lubricant, so that the lubricant can be conveyed into the coating brush for roller coating. The seal can also seal the outlet of the lubricant supply section when the lubricant conveying equipment stops conveying lubricant, and can draw the lubricant in the outlet of the lubricant supply section back inward, thereby preventing the lubricant in the lubricant supply section from continuously leaking out through the outlet and wasting the lubricant. It can also prevent the lubricant from leaking and accumulating on the bottom surface of the coating brush, which would lead to uneven application of the lubricant in the subsequent process, and thus improve the uniformity of the lubricant coating on the metal plate.

[0019] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is one of the three-dimensional structural schematic diagrams of the stamping processing equipment of the present invention; Figure 2 This is a front structural diagram of the stamping equipment of the present invention; Figure 3 This is a second three-dimensional structural schematic diagram of the stamping equipment of the present invention; Figure 4 For the present invention Figure 3 A magnified structural diagram at point A; Figure 5 This is a side view of the stamping equipment of the present invention; Figure 6 For the present invention Figure 5 A magnified structural diagram at point B; Figure 7 This is a three-dimensional structural diagram of the lubrication part of the present invention; Figure 8 This is one of the three-dimensional structural schematic diagrams of the coating roller of the present invention; Figure 9 This is a second three-dimensional structural schematic diagram of the coating roller of the present invention; Figure 10 This is the third three-dimensional structural schematic diagram of the coating roller of the present invention; Figure 11 This is the fourth three-dimensional structural schematic diagram of the coating roller of the present invention; Figure 12 For the present invention Figure 11 A magnified structural diagram at point C; Figure 13 This is a schematic diagram of the front structure of the coating roller of the present invention; Figure 14 For the present invention Figure 13 A magnified structural diagram at point D; Figure 15 This is a schematic diagram demonstrating the liquid outlet of the present invention when liquid is discharged. Figure 16 This is a schematic diagram demonstrating the sealing and liquid absorption process at the liquid outlet of the present invention.

[0022] In the diagram: 1. Stamping section; 11. Lower die; 12. Upper die; 13. Base; 14. Support column; 15. Top seat; 16. Slide rail; 17. Stamping seat; 18. Hydraulic shaft; 2. Lubrication section; 21. Coating roller; 22. Bracket; 23. Adapter; 24. Liquid inlet port; 25. Pressure spring; 26. Limiting guide sleeve; 27. Limiting rod; 28. Slide groove; 29. ​​Sliding seat; 210. Connecting seat; 2101. Mandrel; 2102. 2103. Lubricant delivery channel; 2104. Coating brush; 2105. Friction roller; 2106. Inner support roller; 2107. Guide groove; 2108. Liquid outlet; 2109. Liquid inlet channel one; 2110. Liquid inlet channel two; 2111. Pressure chamber; 2111. Piston; 2112. Return spring; 2113. Piston rod; 2114. Sealing groove; 2115. Back suction channel; 2116. Sealing plug; 2117. Guide head. Detailed Implementation

[0023] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0024] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0025] Example 1 Please see Figures 1-4 , Figure 10As shown, this embodiment is a metal sheet stamping processing equipment, including a stamping section 1, which includes a lower die 11 and an upper die 12. The lower die 11 and the upper die 12 can stamp and shape the metal sheet when the die is closed. It also includes a lubrication section 2 located at the feeding end of the lower die 11 and the upper die 12. The lubrication section 2 includes two sets of brush rollers 21, which can roll and abut against the upper and lower surfaces of the metal sheet respectively when the metal sheet is conveyed between the lower die 11 and the upper die 12. A coating brush 2103 is fitted onto the surface of the brush roller 21, and a lubricant supply section is provided inside the brush roller 21. One end of the lubricant supply section is connected to an external lubricant supply... The lubricant supply unit is connected to the other end of the conveying equipment, and the lubricant supply unit is connected to the coating brush 2103, so that the lubricant conveying equipment can deliver the lubricant to the coating brush 2103 through the lubricant supply unit, and then the coating brush 2103 rolls the lubricant onto the surface of the metal plate; the coating roller 21 is also equipped with a seal located at the outlet of the lubricant supply unit. The seal can be opened when the lubricant conveying equipment is conveying the lubricant, so that the lubricant can be delivered into the coating brush 2103. The seal can also seal the outlet of the lubricant supply unit when the lubricant conveying equipment stops conveying the lubricant, and can draw the lubricant in the outlet of the lubricant supply unit back inward.

[0026] When the metal sheet is stamped, the metal sheet is fed between the lower die 11 and the upper die 12 through the gap between the upper and lower sets of coating rollers 21. At the same time, the lubricant conveying equipment delivers lubricant to the coating brush 2103 through the lubricant supply section, and then the coating brush 2103 rolls the lubricant onto the surface of the metal sheet. After the metal sheet is conveyed through the gap between the upper and lower sets of coating rollers 21 and reaches the stamping station between the lower die 11 and the upper die 12, the upper die 12 moves down and closes with the lower die 11 to stamp the metal sheet into a metal stamping part. At this time, the lubricant conveying equipment stops delivering lubricant, and the sealing component seals the outlet of the lubricant supply section and draws the lubricant in the outlet of the lubricant supply section back inward. In this embodiment, because the metal plate surface is uniformly coated with lubricant, the frictional resistance between the metal plate and the lower die 11 and upper die 12 during stamping is reduced, preventing wear or scratches on the metal plate, lower die 11, and upper die 12. This is beneficial for improving the service life of the die and the quality of the stamping process. It also facilitates the demolding of subsequent metal stamping parts. Compared to applying lubricant to the die surface before stamping, this embodiment applies lubricant to the surface of the metal plate during the feeding and conveying process without interrupting the stamping process, which is beneficial for improving the continuity of the stamping operation and the overall processing efficiency. Furthermore, the lubricant is delivered and applied by roller pressing. The coating technology enables continuous and automated lubricant coating, making the coating process more efficient and convenient. This further improves the stamping efficiency of stamping equipment. After lubricant coating is completed, the lubricant supply outlet can be sealed by a sealant, and the lubricant in the outlet can be drawn back inward. This prevents the lubricant in the supply section from continuously leaking outward through the outlet, thus avoiding waste. It also prevents lubricant leakage from accumulating on the bottom surface of the coating brush 2103, which could lead to uneven lubricant application later. This helps improve the uniformity of lubricant coating on the metal plate.

[0027] Example 2 Please see Figure 1 , Figure 2 As shown, the difference between this embodiment and the above embodiment is that the stamping part 1 also includes a base 13, the lower die 11 is fixedly installed on the top surface of the base 13, the top surface of the base 13 is also fixedly installed with a support column 14, the top of the support column 14 is fixedly installed with a top seat 15, and a stamping drive unit is installed on the top seat 15. The stamping drive unit can drive the upper die 12 to move downward to close with the lower die 11 or drive the upper die 12 to move upward to open the die. The stamping drive unit includes a slide rail 16 and a hydraulic shaft 18. The hydraulic shaft 18 is fixedly installed on the top seat 15, and a stamping seat 17 is fixedly installed on the telescopic end at the bottom of the hydraulic shaft 18. The stamping seat 17 slides with the slide rail 16, and the upper die 12 is fixedly installed on the bottom surface of the stamping seat 17.

[0028] The lower die 11 is a groove to facilitate the placement of the metal sheet on its top surface, while the upper die 12 is a punch. During the stamping process, the hydraulic shaft 18 drives the stamping seat 17 to move downward along the slide rail 16, so that the stamping seat 17 drives the upper die 12 to move downward until the upper die 12 and the lower die 11 are closed, and the metal sheet on the lower die 11 is stamped and shaped. After the stamping process is completed, the hydraulic shaft 18 drives the stamping seat 17 and the upper die 12 to move upward and reset, so that the upper die 12 and the lower die 11 are separated.

[0029] Example 3 Please see Figure 8 , Figure 10As shown, the difference between this embodiment and the above embodiment is that the coating roller 21 further includes a spindle 2101. An inner support roller body 2105 is fixedly installed on the outer ring of the spindle 2101. The coating brush 2103 is fixedly fitted on the outer ring of the inner support roller body 2105. The outer ring of the inner support roller body 2105 is provided with a plurality of flow guiding units that communicate with the lubricant supply unit. The plurality of flow guiding units are equidistantly distributed along the axial direction of the inner support roller body. The flow guiding units can uniformly guide and transport the lubricant supplied by the lubricant supply unit into the coating brush 2103, so that the lubricant is more evenly distributed on the coating brush 2103, thereby enabling the coating brush 2103 to uniformly apply the lubricant to the surface of the metal plate.

[0030] Specifically, the flow guiding unit includes multiple flow guiding grooves 2106, which are circumferentially and equidistantly distributed on the surface of the inner support roller 2105. Each flow guiding groove 2106 is distributed along the axial direction of the inner support roller 2105, so that the multiple flow guiding units can form a flow guiding and conveying channel densely distributed on the surface of the inner support roller 2105 through the flow guiding grooves 2106. Then, the lubricant supplied by the lubricant supply unit is uniformly guided and conveyed into the coating brush 2103 through the cooperation of the multiple flow guiding grooves 2106.

[0031] Example 4 Please see Figures 8-16 As shown, the difference between this embodiment and the above embodiment is that the lubricant supply unit includes a lubricant delivery channel 2102, which is disposed inside the mandrel 2101. The lubricant delivery channel 2102 is connected to the lubricant delivery equipment, and a plurality of liquid inlet channels 2108 corresponding one-to-one with the guide grooves 2106 are extended on the lubricant delivery channel 2102. The end of the liquid inlet channel 2108 is connected to a sealing groove 2114. One end is provided with an outlet 2107 that communicates with the corresponding guide channel 2106; the seal can seal the sealing channel 2114 to isolate the inlet channel 2108 and the outlet 2107. The seal can also release the seal on the sealing channel 2114 when the lubricant conveying equipment conveys the lubricant to the lubricant conveying channel 2102, so that the lubricant in the lubricant conveying channel 2102 can be conveyed to the guide channel 2106 through the inlet channel 2108, the sealing channel 2114, and the outlet 2107. During lubricant application, lubricant is continuously supplied to the lubricant delivery channel 2102 through the lubricant delivery equipment. At this time, the lubricant is delivered to the guide channel 2106 through the inlet channel 2108, the sealing groove 2114, and the outlet 2107. The guide channel 2106 then guides the lubricant to the coating brush 2103 on the outer ring, so that the coating brush 2103 rolls and coats the lubricant onto the surface of the metal plate. When the lubricant delivery equipment stops supplying lubricant, the seal seals the sealing groove 2114 to isolate the inlet channel 2108 and the outlet 2107, preventing the lubricant in the lubricant delivery channel 2102 and the inlet channel 2108 from continuously leaking out through the outlet 2107. At the same time, the seal can also draw back the lubricant in the outlet 2107 and the guide channel 2106 to further reduce the leakage and dripping of lubricant.

[0032] Furthermore, the sealing element includes a pressure chamber 2110, one end of which is provided with a liquid inlet channel 2109 communicating with the lubricant delivery channel 2102. A piston 2111 is slidably and slidably installed inside the pressure chamber 2110. A piston rod 2113 is fixedly installed at one end of the piston 2111. One end of the piston rod 2113 slides into the sealing groove 2114 and is fixedly installed with a sealing plug 2116 that can slide and seal the sealing groove 2114. A return spring 2112 is fitted on the piston rod 2113 and abuts against the side of the piston 2111. A back suction channel 2115 is provided inside the piston rod 2113 and the sealing plug 2116. One end of the back suction channel 2115 is communicating with the liquid outlet 2107, and the other end of the back suction channel 2115 is communicating with the pressure chamber 2110. A frustum-shaped guide head 2117 is fixedly installed on the outer ring of the end of the sealing plug 2116.

[0033] The sealing plug 2116 initially slides and seals within the sealing groove 2114 to separate the inlet channel 2108 and the outlet 2107. When the lubricant delivery device continuously delivers lubricant into the lubricant delivery channel 2102, the lubricant is delivered to the pressure chamber 2110 via the inlet channel 2109, causing the hydraulic pressure in the pressure chamber 2110 to gradually increase. This hydraulic pressure overcomes the elastic force of the return spring 2112 and pushes the piston 2111 towards the sealing groove 2114. At this time, the piston 2111 is pushed by the piston rod... 2113 Push the sealing plug 2116 outward until the sealing plug 2116 moves to the outside of the sealing groove 2114. At this time, the liquid inlet channel 2108 is connected through the sealing groove 2114 and the liquid outlet 2107, thereby automatically opening the lubricant delivery channel. The lubricant in the lubricant delivery channel 2102 can be delivered to the guide groove 2106 through the liquid inlet channel 2108, the sealing groove 2114, and the liquid outlet 2107. Then, the guide groove 2106 guides the lubricant to the coating brush 2103 on the outer ring for coating and use. When the lubricant delivery equipment stops delivering lubricant into the lubricant delivery channel 2102, as the lubricant is consumed, the hydraulic pressure in the entire lubricant delivery channel gradually decreases. At this time, the piston 2111 moves inward under the elastic force of the return spring 2112, and pushes the sealing plug 2116 inward through the piston rod 2113. When the end of the sealing plug 2116 moves into the sealing groove 2114, the sealing plug 2116 isolates the inlet channel 2108 and the outlet 2107, stopping the delivery of lubricant into the outlet 2107. As the piston 2111 continues to move backward, a negative pressure is formed at the end of the pressure chamber 2110 near the outlet 2107, so that the lubricant in the outlet 2107 and the guide groove 2106 is drawn back into the pressure chamber 2110 by the negative pressure, so as to prevent the lubricant in the outlet 2107 and the guide groove 2106 from leaking outward.

[0034] Furthermore, friction rollers 2104 are fixedly installed at both ends of the mandrel 2101. The friction rollers 2104 can rotate under the frictional resistance when the metal plate is moved and conveyed, and drive the mandrel 2101, the inner support roller 2105 and the coating brush 2103 to rotate synchronously, so that the coating brush 2103 can roll and coat the lubricant onto the surface of the metal plate. The friction rollers 2104 are rubber rollers and are located at the edge of the metal plate where the metal plate does not participate in the stamping process, so there is no need to roll and coat the lubricant at this position.

[0035] Example 5 Please see Figure 1 , Figures 3-7 As shown, the difference between this embodiment and the above embodiment is that the lubrication part 2 further includes a bracket 22. A groove 28 is provided on the upper side of the bracket 22, and a sliding seat 29 is installed inside the groove 28. A coating roller 21 is rotatably mounted on the sliding seat 29. Another coating roller 21 located below the coating roller 21 is also rotatably mounted on the bracket 22. An elastic telescopic module abutting against the upper part of the sliding seat 29 is also installed on the bracket 22. The elastic telescopic module includes a limiting guide sleeve 26 and a connecting seat 210. The limiting guide sleeve 26 is fixedly mounted on the bracket 22, and the connecting seat 210 is fixedly mounted on one side of the sliding seat 29. A limiting rod 27 is fixedly installed on the top surface of the connecting seat 210. The limiting rod 27 is slidably inserted into the inside of the limiting guide sleeve 26, and a pressure spring 25 is fitted on the limiting rod 27 to abut against the top surface of the connecting seat 210. When the metal plate is being fed into the conveyor, the metal plate passes through the gap between the upper and lower coating rollers 21. At this time, the upper coating roller 21 is driven by the elastic force of the pressure spring 25 to press against the upper surface of the metal plate and press the lower surface of the metal plate against the lower coating roller 21. This makes the upper and lower coating rollers 21 in close contact with the upper and lower surfaces of the metal plate, so that the coating rollers 21 can roll and coat the lubricant onto the surface of the metal plate.

[0036] Furthermore, an adapter 23 that communicates with the lubricant supply unit is rotatably mounted at the end of the coating roller 21. A liquid inlet 24 for communicating with the lubricant delivery equipment is provided on one side of the adapter 23. Through the cooperation of the adapter 23 and the liquid inlet 24, the lubricant supply unit in the coating roller 21 can be rotatably connected with the lubricant delivery equipment, thereby facilitating the delivery of lubricant.

[0037] Preferably, the lubricant delivery equipment includes a lubricant storage tank, a delivery pump, and a delivery conduit connected in sequence. The delivery conduit is connected to the liquid inlet 24. When the lubricant delivery equipment is working, the delivery pump can continuously deliver lubricant to the lubricant supply section through the delivery conduit, the liquid inlet 24, and the adapter 23. A pressure relief pipe connected to the lubricant storage tank is installed on the delivery conduit, and a pressure relief valve is installed on the pressure relief pipe. When the lubricant delivery equipment stops delivering lubricant, the pressure relief valve on the pressure relief pipe is opened, allowing the lubricant in the pipeline to flow back into the lubricant storage tank through the pressure relief pipe, thereby reducing the pipeline pressure and creating favorable conditions for the seal to draw back the lubricant in the liquid outlet 2107 and the guide channel 2106.

[0038] Example 6 This embodiment discloses a stamping method for aluminum alloy forgings, the specific steps of which are as follows: The aluminum alloy plate is fed between the lower mold 11 and the upper mold 12 through the gap between the upper and lower sets of coating rollers 21. At the same time, the lubricant conveying equipment delivers the lubricant to the coating brush 2103 through the lubricant supply section, and then the coating brush 2103 rolls the lubricant onto the surface of the aluminum alloy plate. After the aluminum alloy plate is conveyed through the gap between the upper and lower sets of coating rollers 21 and reaches the stamping station between the lower die 11 and the upper die 12, the upper die 12 moves down and closes with the lower die 11 to stamp the aluminum alloy plate into an aluminum alloy forging. At this time, the lubricant conveying equipment stops conveying lubricant, and the sealing component seals the outlet of the lubricant supply section and draws the lubricant in the outlet of the lubricant supply section back inward.

[0039] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0040] It should be noted that, for the sake of simplicity, the foregoing method embodiments are all described as a series of actions. However, those skilled in the art should understand that the present invention is not limited to the described order of actions, because according to the present invention, some steps can be performed in other orders or simultaneously. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily essential to the present invention.

Claims

1. A metal sheet stamping processing equipment, comprising a stamping section, characterized in that: The stamping section includes a lower die and an upper die, which can stamp and shape the metal sheet when the die is closed. It also includes a lubrication section located at the feeding end of the lower mold and the upper mold. The lubrication section includes two sets of brushing rollers, which can roll and abut against the upper and lower surfaces of the metal plate respectively when the metal plate is conveyed between the lower mold and the upper mold. The surface of the coating roller is fitted with a coating brush, and the inside of the coating roller is provided with a lubricant supply section. One end of the lubricant supply section is connected to an external lubricant conveying device, and the other end of the lubricant supply section is connected to the coating brush, so that the lubricant conveying device can deliver the lubricant to the coating brush through the lubricant supply section, and then the coating brush rolls the lubricant onto the surface of the metal plate. The coating roller is also equipped with a seal located at the outlet of the lubricant supply section. The seal can be opened when the lubricant conveying equipment is conveying lubricant so that the lubricant can be delivered into the coating brush. The seal can also seal the outlet of the lubricant supply section when the lubricant conveying equipment stops conveying lubricant and can draw the lubricant in the outlet of the lubricant supply section back inward.

2. The metal sheet stamping equipment according to claim 1, characterized in that: The stamping part also includes a base, the lower die is fixedly installed on the top surface of the base, a support column is fixedly installed on the top surface of the base, a top seat is fixedly installed on the top of the support column, and a stamping drive unit is installed on the top seat. The stamping drive unit can drive the upper die to move downward to close with the lower die or drive the upper die to move upward to open the die.

3. The metal sheet stamping equipment according to claim 2, characterized in that: The stamping drive unit includes a slide rail and a hydraulic shaft. The hydraulic shaft is fixedly installed on the top seat. A stamping seat is fixedly installed on the telescopic end at the bottom of the hydraulic shaft, and the stamping seat slides in cooperation with the slide rail. The upper die is fixedly installed on the bottom surface of the stamping seat.

4. The metal sheet stamping equipment according to claim 1, characterized in that: The coating roller also includes a mandrel, and an inner support roller body is fixedly installed on the outer ring of the mandrel. The coating brush is fixedly fitted on the outer ring of the inner support roller body, and the outer ring of the inner support roller body is provided with a plurality of flow guiding units that communicate with the lubricant supply unit. The plurality of flow guiding units are equidistantly distributed along the axial direction of the inner support roller body. The flow guiding units can uniformly guide and deliver the lubricant supplied by the lubricant supply unit into the coating brush.

5. The metal sheet stamping equipment according to claim 4, characterized in that: The flow guiding unit includes multiple flow guiding grooves, which are circumferentially and equidistantly distributed on the surface of the inner support roller. Each flow guiding groove is distributed along the axial direction of the inner support roller, so that the multiple flow guiding units can form a dense flow guiding and conveying channel on the surface of the inner support roller through the flow guiding grooves.

6. The metal sheet stamping equipment according to claim 5, characterized in that: The lubricant supply unit includes a lubricant delivery channel located inside the mandrel. The lubricant delivery channel is connected to the lubricant delivery equipment, and multiple inlet channels corresponding to the guide grooves extend from the lubricant delivery channel. A sealing groove is connected to the end of each inlet channel, and an outlet connected to the corresponding guide groove is provided at one end of the sealing groove. The sealing element can seal the sealing groove to isolate the inlet channel and the outlet. The sealing element can also release the seal on the sealing groove when the lubricant delivery equipment delivers lubricant to the lubricant delivery channel, so that the lubricant in the lubricant delivery channel can be delivered to the guide groove through the inlet channel, the sealing groove, and the outlet.

7. The metal sheet stamping equipment according to claim 6, characterized in that: The sealing element includes a pressure chamber, one end of which is provided with a liquid inlet channel connected to the lubricant delivery channel. A piston is slidably and slidably installed inside the pressure chamber. A piston rod is fixedly installed at one end of the piston. One end of the piston rod slides into the sealing groove and is fixedly installed with a sealing plug that can slidably seal the sealing groove. A return spring is fitted on the piston rod and abuts against the side of the piston. The piston rod and the sealing plug are provided with a back suction channel. One end of the back suction channel is connected to the liquid outlet, and the other end of the back suction channel is connected to the pressure chamber. A frustum-shaped guide head is fixedly installed on the outer ring of the end of the sealing plug.

8. The metal sheet stamping equipment according to claim 4, characterized in that: Friction rollers are also fixedly installed at both ends of the mandrel. The friction rollers can rotate under the frictional resistance when the metal plate is moved and conveyed, and drive the mandrel, inner support roller and coating brush to rotate synchronously, so that the coating brush rolls and coats the lubricant onto the surface of the metal plate.

9. A metal sheet stamping processing equipment according to any one of claims 1-8, characterized in that: The lubrication unit also includes a bracket, the upper side of which is provided with a sliding groove, a sliding seat is installed inside the sliding groove, a brush roller is rotatably mounted on the sliding seat, another brush roller located below the brush roller is also rotatably mounted on the bracket, and an elastic telescopic module abutting against the upper part of the sliding seat is also installed on the bracket. The elastic telescopic module includes a limiting guide sleeve and a connecting seat. The limiting guide sleeve is fixedly installed on the bracket, and the connecting seat is fixedly installed on one side of the sliding seat. A limiting rod is fixedly installed on the top surface of the connecting seat. The limiting rod is slidably inserted into the inside of the limiting guide sleeve, and a pressure spring that abuts against the top surface of the connecting seat is fitted on the limiting rod. The end of the coating roller is rotatably mounted with an adapter that communicates with the lubricant supply unit, and one side of the adapter is provided with a liquid inlet for communicating with the lubricant delivery equipment.

10. A stamping method for aluminum alloy forgings, using the metal sheet stamping equipment as described in any one of claims 1-9, characterized in that, The specific steps are as follows: The aluminum alloy sheet is fed between the lower and upper dies through the gap between the upper and lower sets of coating rollers. At the same time, the lubricant conveying equipment delivers the lubricant to the coating brush through the lubricant supply section, and then the coating brush rolls the lubricant onto the surface of the aluminum alloy sheet. After the aluminum alloy sheet is conveyed through the gap between the upper and lower sets of coating rollers and reaches the stamping station between the lower and upper dies, the upper die moves down and closes with the lower die to stamp the aluminum alloy sheet into an aluminum alloy forging. At this time, the lubricant conveying equipment stops conveying lubricant, and the sealing component seals the outlet of the lubricant supply section and draws the lubricant in the outlet of the lubricant supply section back inward.

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