Automobile plate accessory stamping device and stamping method thereof

Abstract

The invention discloses an automobile plate accessory stamping device and a stamping method thereof, and relates to the technical field of stamping devices and stamping methods.The automobile plate accessory stamping device comprises a frame body, an upper pressing disc and a lower pressing disc are connected to the interior of the frame body, a telescopic protective cover is connected to the outer ring face of the upper pressing disc and the outer ring face of the lower pressing disc, and a shell is connected to one end of the telescopic protective cover; the shell communicates with the interior of the protective cover, and a cleaning assembly and a heating assembly are arranged in the shell. According to the device, through the cooperative arrangement of the heating roller frame and the heating pipe, a plate can be heated, the deformation resistance of the material is effectively reduced, the stamping force needed by stamping forming is reduced, the plasticity of the plate is improved, and chippings generated in the stamping process are reduced; abrasion and adhesion of chippings to the die are reduced, the service life of the die is effectively prolonged, and the maintenance cost is reduced.

Description

Technical Field

[0001] This invention relates to the technical field of stamping devices and stamping methods, and more specifically to a stamping device and stamping method for automotive sheet metal parts. Background Technology

[0002] Automotive sheet metal stamping equipment is a specialized piece of equipment used in automobile manufacturing to plastically form sheet metal into automotive parts of the required shape and size. This type of equipment is one of the key process equipment in automobile body manufacturing.

[0003] When stamping sheet metal, such as aluminum and stainless steel, which have low hardness and high ductility, the immense pressure applied by the punch during stamping causes the sheet to separate, producing debris. This debris is prone to deformation, and the adhered debris not only dulls the punch cutting edge and causes abnormal die clearance, accelerating die wear and shortening die life, but also presses into the sheet surface during subsequent stamping processes, creating defects and affecting the dimensional accuracy and appearance quality of the stamped parts. Especially in seasons with lower ambient temperatures, the lubrication effect on the material surface is weakened, and the cold welding effect is more pronounced, further exacerbating the debris adhesion phenomenon and having a more significant impact on the stability of the stamping process and the product yield.

[0004] Meanwhile, metal sheets are coated with rust-preventive oil and other oily substances when they leave the factory. Due to their high viscosity, these substances easily attract external impurities during transportation. These impurities can then enter the mold as the sheet moves, causing damage to the mold and affecting the forming effect. Although a blowing structure can be installed at the stamping inlet to blow away impurities, highly adhesive impurities cannot be effectively removed.

[0005] Therefore, it is necessary to propose a stamping device and stamping method for automotive sheet metal parts to solve the above problems. Summary of the Invention

[0006] In view of the above situation and to overcome the defects of the prior art, the present invention provides a stamping device and stamping method for automotive sheet metal parts, so as to solve the problems mentioned in the background art.

[0007] The technical solution is that the present invention includes a frame, an upper pressure plate and a lower pressure plate are connected inside the frame, a telescopic protective cover is connected to the outer ring surface of the upper pressure plate and the lower pressure plate, one end of the telescopic protective cover is connected to an outer shell, the outer shell is connected to the inside of the protective cover, a cleaning component and a heating component are provided inside the outer shell, and air blowing components facing the mold are provided on both sides inside the telescopic protective cover. The cleaning assembly includes a cleaning roller frame and a cleaning sleeve rotatably connected to the outside of the cleaning roller frame. The outer wall of the cleaning sleeve is provided with bristles. The cleaning roller frame has an air suction groove on the side facing the board, and the air suction groove is connected to a negative pressure pipe. The heating assembly includes a heating roller frame and a heating sleeve rotatably connected to the outside of the heating roller frame. The heating roller frame has an air outlet groove on the side facing the plate. A positive pressure pipe is connected to the outside of the air outlet groove. A heating tube is connected inside the air outlet groove. A heating structure is installed inside the heating sleeve. Air flow holes are opened on the outer walls of both the heating sleeve and the cleaning sleeve. Both the heating sleeve and the cleaning sleeve are externally connected to a rotation drive structure.

[0008] Furthermore, the cleaning component has a dust cover on the side away from the board. One end of the dust cover is connected to the cleaning roller frame, and the other end of the dust cover is rotatably connected to the cleaning sleeve. A reciprocating screw is rotatably connected inside the dust cover, and a cleaning moving block is threaded on the outer wall of the reciprocating screw. The cleaning moving block and the dust cover are slidably connected. The bottom of the cleaning moving block is provided with comb teeth that contact the bristles. A negative pressure pipe is connected to the dust cover.

[0009] Furthermore, a positive pressure airflow groove is provided on the outer wall of the cleaning roller frame. A positive pressure pipe and a negative pressure pipe are connected to the side of the cleaning roller frame that is connected to the dust cover. The positive pressure pipe is connected to the positive pressure airflow groove, and the negative pressure pipe is connected to the suction groove. One end of the reciprocating screw lever is connected to one end of the cleaning sleeve through a chain drive structure. The two cleaning roller frames are connected to each other through a telescopic drive structure.

[0010] Furthermore, the interior of the outer shell is provided with symmetrical upper and lower support frames. The bottom support frame is connected to the frame body. Each support frame is equipped with a cleaning component and a heating component. A clamping roller is rotatably connected to the end of the support frame away from the heating component. The two support frames are connected by a compression component. One end of the heating sleeve and the clamping roller are connected by a chain drive structure. The two clamping rollers are connected by a telescopic drive structure. A cleaning motor and a conveying motor are connected to both sides of the outer shell. The output end of the cleaning motor is connected to one of the cleaning sleeves, and the output end of the conveying motor is connected to one of the cleaning sleeves.

[0011] Furthermore, the extrusion assembly includes a threaded rod connected to a bottom support frame, the top of the threaded rod penetrating the top support frame, and a bolt threadedly connected to the top of the threaded rod, the bolt and the top support frame being connected by a spring; The telescopic transmission structure includes a spline rod and a spline sleeve that are slidably connected to each other, and a helical gear transmission structure is connected to the ends of the spline rod and the spline sleeve that are far apart from each other.

[0012] Furthermore, the outer shell is inclined on the side away from the telescopic protective cover, and a feed port for the plate is opened on the inclined side of the outer shell. A wind baffle is slidably connected to the feed port of the outer shell. Brushes facing the plate are connected to the bottom of the wind baffle and the outer shell. Telescopic sleeves are connected between the two sides of the wind baffle and the outer shell.

[0013] Furthermore, the blowing assembly includes a tilting frame, an airflow pipe connected to one end of the tilting frame facing the mold, an obliquely arranged nozzle connected to the outer wall of the airflow pipe, a positive pressure pipe connected to the outside of the airflow pipe, a lower sleeve connected to the side wall of the lower pressure plate, a crossbar connected to the side wall of the lower sleeve, and the end of the tilting frame away from the airflow pipe rotatably connected to the crossbar.

[0014] Furthermore, an upper sliding rod located inside the lower sleeve is connected to the side wall of the upper pressure plate, a moving rod is axially slidably connected inside the crossbar, a threaded groove is opened inside the end of the flipping frame away from the airflow pipe, a driving groove is opened on the side wall of the upper sliding rod, one end of the moving rod is connected to a pin located in the groove, and the other end of the moving rod is connected to a pin located in the threaded groove.

[0015] Furthermore, a discharge rack is connected to the side of the telescopic protective cover away from the outer shell. The discharge rack is connected to a discharge hopper and an airflow discharge pipe. One end of the discharge hopper is positioned towards the mold. The middle of the lower pressure plate has a finished product discharge port that extends out of the rack.

[0016] As having the same inventive concept as the above-mentioned technical solution, this invention also claims protection for a stamping method of an automotive sheet metal parts stamping device, which includes the following steps using the aforementioned automotive sheet metal parts stamping device: S1. Feeding: The roll of material to be processed is placed between two clamping rollers, which then convey the material. S2. Cleaning: The brush on the outside of the shell pre-cleans the surface of the board, and the cleaning component inside the shell removes and sucks away the impurities on the surface of the board. S3, Heating: The heating component heats the board, and the airflow blown out from the air outlet keeps the board warm; S4. Stamping: The upper pressure plate drives the mold to stamp the sheet metal. Finished parts are discharged through the finished product outlet, and scraps are cut into pieces and discharged through the discharge hopper. S5. Debris removal: When the upper pressure plate moves upward, the tilting frame rotates upward, and the ejected airflow cleans the mold. The airflow is discharged from the airflow discharge pipe.

[0017] Compared with existing known technologies, the technical solution provided by this invention has the following significant advantages: 1. This device, through the combined arrangement of heating roller frame and heating tube, can heat the sheet metal, effectively reducing the material's deformation resistance, thereby reducing the stamping force required for stamping, improving the sheet metal's plasticity, and reducing the debris generated during the stamping process. Through its combination with the blowing assembly, it reduces the wear and adhesion of debris to the mold, effectively extending the mold's service life and reducing maintenance costs.

[0018] 2. The combined use of cleaning rollers and cleaning sleeves effectively cleans the surface of the sheet metal, reducing impurities and improving stamping efficiency. Simultaneously, impurities entering the outer casing are reduced in adhesion by the hot air, making them easier to remove. Furthermore, the external telescopic protective cover prevents external impurities from entering the interior, minimizing their impact on the sheet metal and mold, effectively extending mold life and improving molding results.

[0019] 3. This invention integrates sheet cleaning, preheating, heating, stamping, mold cleaning, and waste discharge into a single process, achieving automated linkage. The automated brush self-cleaning mechanism and mold blowing cleaning mechanism reduce manual intervention, ensuring the stability and efficiency of continuous production. The entire process is compact and coherent, reducing transfer and waiting time between processes and significantly improving overall production efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the telescopic protective cover and outer shell structure in this invention; Figure 2 This is a schematic diagram of the upper pressure plate and telescopic protective cover structure in this invention; Figure 3 This is a schematic diagram of the mold and airflow pipe structure in this invention; Figure 4 This is a schematic diagram of the lower sleeve and upper sliding rod structure in this invention; Figure 5 This is a schematic diagram of the cleaning sleeve and brush structure in this invention; Figure 6 This is a schematic diagram of the cleaning sleeve and cleaning motor structure in this invention; Figure 7 This is a schematic diagram of the cleaning roller frame and cleaning sleeve structure in this invention; Figure 8 This is a schematic diagram of the heating roller frame and heating sleeve structure in this invention; Figure 9 This is a schematic diagram of the cleaning roller frame and air suction groove structure in this invention; Figure 10 This is a schematic diagram of the windbreak plate and telescopic sleeve structure in this invention; Figure 11 This is a schematic diagram of the tilting frame and airflow pipe structure in this invention; Figure 12 This is a schematic diagram of the moving rod and driving slide structure in this invention.

[0021] Figure label: 101. Frame; 102. Upper pressure plate; 103. Lower pressure plate; 104. Telescopic protective cover; 105. Outer shell; 106. Cleaning roller frame; 107. Cleaning sleeve; 108. Brush bristles; 109. Suction slot; 110. Negative pressure pipe; 111. Heating roller frame; 112. Heating sleeve; 113. Exhaust slot; 114. Positive pressure pipe; 115. Heating tube; 116. Mold; 201. Dust cover; 202. Reciprocating screw; 203. Cleaning moving block; 204. Positive pressure airflow slot; 205. Chain drive structure; 206. Telescopic drive structure; 301. Support frame; 3 02. Clamping roller; 303. Cleaning motor; 304. Conveyor motor; 305. Threaded rod; 306. Spring; 307. Splined rod; 308. Splined sleeve; 309. Helical gear transmission structure; 310. Baffle plate; 311. Telescopic sleeve; 312. Brush; 401. Tilting frame; 402. Airflow pipe; 403. Nozzle; 404. Lower sleeve; 405. Crossbar; 406. Upper sliding rod; 407. Moving rod; 408. Threaded groove; 409. Drive groove; 501. Discharge rack; 502. Discharge hopper; 503. Airflow discharge pipe; 504. Finished product discharge port. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention; that is, the described embodiments are merely some embodiments of the invention, and not all embodiments. The components of the embodiments of the invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] The conventional components and key load-bearing components in this case are selected in accordance with standards in terms of material selection, heat treatment process and structural dimensions to ensure that they have sufficient strength, stiffness and fatigue resistance under rated load and expected working conditions. These are all conventional design considerations well known to those skilled in the art.

[0024] Depend on Figures 1 to 12The device includes a frame 101, which is the main structure of the device and consists of a machine body, a hydraulic system, an actuator, a worktable, a control system, a safety protection system, and auxiliary systems. The worktable works in conjunction with the hydraulic system. An upper pressure plate 102 and a lower pressure plate 103 are connected internally to the frame 101, forming the worktable within the frame 101. A telescopic protective cover 104 is connected to the outer circumference of the upper pressure plate 102 and the lower pressure plate 103. The telescopic protective cover 104 is a telescopic protective structure, preferably a bellows cover. One end of the telescopic protective cover 104 is connected to a shell 105, which communicates with the interior of the protective cover and is located at the end of the telescopic protective cover 104 near the feed point. The outer shell 105 is equipped with a cleaning component and a heating component. The telescopic protective cover 104 has air blowing components on both sides facing the mold 116. Before the metal sheet enters the mold 116, it is first cleaned by the cleaning component to prevent impurities from adhering to the surface of the metal sheet. Then it is heated by the heating component, which not only reduces the brittleness of the material and reduces the generation of debris, but also improves the plasticity of the material and reduces the molding difficulty.

[0025] The cleaning assembly includes a cleaning roller frame 106 and a cleaning sleeve 107 rotatably connected to the outside of the cleaning roller frame 106. The cleaning roller frame 106 is fixedly installed, and the cleaning sleeve 107 rotates on the outer wall of the cleaning roller frame 106. One end of the cleaning sleeve 107 is externally connected to a rotation drive structure, and the rotation speed of the cleaning sleeve 107 is greater than the conveying speed of the board. The outer wall of the cleaning sleeve 107 is provided with bristles 108, and multiple sets of bristles 108 are arranged in a crisscross pattern, forming a diamond-shaped area between the bristles 108. Airflow holes are provided on the surface of the cleaning sleeve 107. An air intake groove 109 is provided on the side of the cleaning roller frame 106 facing the board material. Both air intake grooves 109 on the cleaning roller frame 106 are positioned facing the board material. A negative pressure pipe 110 is connected to the external air intake groove 109, and the negative pressure pipe 110 is connected to a negative pressure device. When the cleaning sleeve 107 rotates, the bristles 108 can clean away impurities on the surface of the board material. The cleaned impurities are sucked into the air intake groove 109 through the airflow holes on the surface of the cleaning sleeve 107, and then transported to the negative pressure device. Specifically, a filter device is installed inside the negative pressure device to collect impurities.

[0026] Since the cleaning sleeve 107 rotates outside the cleaning roller frame 106, in order to prevent the cleaning sleeve 107 from collapsing when passing through the suction groove 109, in the embodiment, a support structure is provided inside the cleaning sleeve 107 or a support structure is provided on the cleaning roller frame 106 to prevent deformation during rotation.

[0027] Since the suction groove 109 on the cleaning roller frame 106 is located on the side close to the board, suction will only be generated when the airflow hole on the cleaning sleeve 107 rotates to the suction groove 109, which will work in conjunction with the cleaned impurities to suck them away.

[0028] The heating assembly includes a heating roller frame 111 and a heating sleeve 112 rotatably connected to the outside of the heating roller frame 111. The structure of the heating assembly is the same as that of the cleaning assembly, and the structure is referenced. Figure 7 and Figure 8 The heating roller frame 111 has an air outlet groove 113 on the side facing the board. The air outlet groove 113 is connected to a positive pressure pipe 114. A heating pipe 115 is connected inside the air outlet groove 113. The heating pipe 115 is a heating structure. The positive pressure pipe 114 supplies airflow to the air outlet groove 113. When the airflow passes through the heating pipe 115, it will be heated, thereby heating the surface of the board.

[0029] Because heating via airflow is inefficient, a heating structure is installed inside the heating sleeve 112. In one embodiment, an electric heating structure is installed inside the heating sleeve 112, which is connected to the electric heating mechanism via a slip ring structure. The heating sleeve 112 comes into contact with the plate and heats the plate through heat exchange. In another embodiment, a heating structure is installed inside the heating roller frame 111, which first heats the heating sleeve 112, and then the heating sleeve 112 heats the plate. Airflow holes are provided on the outer walls of both the heating sleeve 112 and the cleaning sleeve 107 to blow out hot airflow. Both the heating sleeve 112 and the cleaning sleeve 107 are externally connected to a rotary drive structure. The heating sleeve 112 performs the main heating, while the hot airflow provides auxiliary heating. The hot airflow blown out from the air outlet 113 flows on the surface of the plate, heating and insulating the plate. Because the inlet end is equipped with a shell 105, the internal airflow can only flow towards the mold 116, which can keep the heated plate warm.

[0030] Heating further enhances the ductility of aluminum sheets and stainless steel, significantly alleviating stress concentration and allowing for smoother plastic deformation rather than brittle fracture. For example, when 5082-O aluminum alloy is warm-stamped at 180°C, the amount of debris generated during fracture is significantly reduced compared to room temperature stamping, especially during winter heating. Simultaneously, heating decreases the hardness of the sheet metal, reducing the stamping force required for deformation. This weakens the extrusion friction between the die 116 and the sheet metal, reducing metal debris from die 116 wear, preventing debris from detaching from the sheet surface due to friction, and lowering the probability of scratches on the sheet surface from the die 116.

[0031] Dust, scale, and other impurities adhere to the surface of metal sheets. If not removed, these impurities will be crushed by the die 116 during stamping, forming fine fragments that may embed into the sheet surface. Simultaneously, oily substances on the sheet surface increase the adhesion of impurities, making cleaning more difficult. In this application, when the sheet enters the housing 105, the high-temperature airflow inside causes the viscosity of the rust-preventive oil to decrease significantly with increasing temperature (e.g., mineral-based rust-preventive oil has a viscosity of 15 mm² / s at 40°C, which decreases to 8-10 mm² / s at 50°C, and further to 5-7 mm² / s at 60°C). This significantly weakens the oil film's ability to encapsulate and adsorb impurities, causing particles originally embedded in the oil film to loosen and partially float to the surface. Furthermore, heating increases the fluidity of the oil film, reducing indirect adhesion between impurities and the sheet surface, thus providing conditions for cleaning by the brush 312 and improving the cleaning efficiency of the cleaning components.

[0032] After prolonged use, the bristles 108 will become dirty and need to be cleaned. Manual cleaning will affect production efficiency. The following is a structure for automatically cleaning the bristles 108: Specifically, the cleaning component is provided with a dust cover 201 on the side away from the board. The two sides of the dust cover 201 are spaced apart from the bristles 108 to prevent dust from scattering when in contact with the bristles 108. One end of the dust cover 201 is connected to the cleaning roller frame 106, and the other end of the dust cover 201 is rotatably connected to the cleaning sleeve 107 without affecting the rotation of the cleaning sleeve 107 outside the cleaning roller frame 106. A reciprocating screw 202 is rotatably connected inside the dust cover 201. A cleaning moving block 203 is threadedly connected to the outer wall of the reciprocating screw 202. A slider corresponding to the reciprocating screw 202 is provided inside the cleaning moving block 203. The cleaning moving block 203 and the dust cover 201 are slidably connected. A guide structure is provided inside the dust cover 201. When the reciprocating screw 202 rotates, it drives the cleaning moving block 203 to move axially back and forth. The bottom of the cleaning moving block 203 is provided with comb teeth that contact the bristles 108. A negative pressure pipe 110 is connected to the dust cover 201. The back-and-forth movement of the comb teeth moves the bristles 108 left and right, thereby cleaning off the impurities attached to the bristles 108, and then sucking away the cleaned impurities through the negative pressure pipe 110.

[0033] The method of cleaning by back-and-forth combing can only clean impurities on the surface of the bristles 108. Impurities located at the bottom of the bristles 108 cannot be effectively cleaned. The following is a structure for cleaning the roots of the bristles 108: Specifically, a positive pressure airflow groove 204 is provided on the outer wall of the cleaning roller frame 106. The airflow in the positive pressure airflow groove 204 will be ejected from the airflow hole on the surface of the cleaning sleeve 107, which will impact the bristles 108 on the surface of the cleaning sleeve 107, thereby cleaning off the impurities. The cleaning roller frame 106 is connected to a positive pressure pipe 114 and a negative pressure pipe 110 on the side connected to the dust cover 201. The positive pressure pipe 114 is connected to the positive pressure airflow channel 204, and the negative pressure pipe 110 is connected to the suction channel 109. The positive pressure airflow channel 204 and the cleaning moving block 203 are staggered. During cleaning, the cleaning moving block 203 cleans the surface of the brush bristles 108, and then the bottom of the brush bristles 108 is cleaned through the positive pressure airflow channel 204. By using two different cleaning methods, the attached impurities are cleaned. One end of the reciprocating screw 202 is connected to one end of the cleaning sleeve 107 through a chain drive structure 205. When the cleaning sleeve 107 rotates to clean the board, the cleaning moving block 203 also cleans the brush bristles 108. During production, the distance between the two cleaning roller frames 106 will vary due to differences in the thickness of the sheet metal. The two cleaning roller frames 106 are connected by a telescopic transmission structure 206. The telescopic transmission structure 206 can transmit power and also has a stretching function, which can keep the two cleaning sleeves 107 rotating in opposite directions while adjusting the distance between them.

[0034] The cleaning component, heating component, and clamping roller 302 need to be kept in the same position to effectively clean and heat the sheet material. The following provides a structure for fixing the cleaning component, heating component, and clamping roller 302: Specifically, the interior of the outer shell 105 is provided with symmetrical upper and lower support frames 301. The bottom support frame 301 is connected to the frame body 101. In one embodiment, the bottom support frame 301 is equipped with a height adjustment device, such as a hydraulic adjustment device, for height adjustment to accommodate positional changes in different types of molds 116. The cleaning component and heating component are installed on each support frame 301. The end of the support frame 301 away from the heating component is rotatably connected to the clamping roller 302. Since the sheet material may sag during feeding, the clamping roller 302 can support the sheet material, improving the conveying efficiency, and simultaneously cooperating with the heating sleeve 112. The two support frames 301 are connected by a pressing component, which brings the upper and lower support frames 301 closer together, thereby clamping the sheet material. The heating sleeve 112 and one end of the clamping roller 302 are connected by a chain drive structure 205, which consists of a sprocket and a chain, and is used to synchronously rotate the heating sleeve 112 and the clamping roller 302. The two clamping rollers 302 are connected by a telescopic transmission structure 206. A cleaning motor 303 and a conveying motor 304 are connected to both sides of the outer casing 105. The output end of the cleaning motor 303 is connected to one of the cleaning sleeves 107, driving the cleaning sleeve 107 to rotate. The cleaning sleeve 107 then drives the clamping roller 302 to rotate via the chain drive structure 205. The output end of the conveying motor 304 is also connected to one of the cleaning sleeves 107, driving the cleaning sleeve 107 to rotate.

[0035] Due to the different types of sheet materials, the fixed-spacing support frame 301 has a limited range of applications. It is necessary for the support frame 301 to adapt to sheet materials of different thicknesses to expand its usability. The following provides a structure that can automatically adapt to sheet material thickness: Specifically, the extrusion assembly includes a threaded rod 305 connected to the bottom support frame 301. The top of the threaded rod 305 is threaded, and the top of the threaded rod 305 passes through the top support frame 301. A bolt is threaded to the top of the threaded rod 305. To improve stability, a washer is provided at the bottom of the bolt, and a cotter pin is provided at the top. The bolt and the top support frame 301 are connected by a spring 306. When the sheet material is too thick, the top support frame 301 moves upward, compressing the top spring 306. The reaction force of the spring 306 clamps the sheet material.

[0036] Since the telescopic transmission structure 206 needs to have transmission capacity and be able to change length, the following is a structure of the telescopic transmission structure 206: The telescopic transmission structure 206 includes a spline rod 307 and a spline sleeve 308 that are slidably connected to each other. The ends of the spline rod 307 and the spline sleeve 308 that are far apart from each other are connected to a helical gear transmission structure 309. The helical gear transmission structure 309 consists of two meshing helical gears. One bevel gear is connected to the spline rod 307 or the spline sleeve 308, and the other bevel gear is connected to the shaft that needs to be connected.

[0037] Since the outer casing 105 is the inlet side, a material inlet needs to be set up. Furthermore, to accommodate plates of different thicknesses, the inlet has a certain height. This large inlet area can lead to hot air leakage. The following structure is provided to prevent internal hot air leakage: Specifically, the outer casing 105 is inclined on the side away from the telescopic protective cover 104. A material inlet is opened on the inclined side of the outer casing 105. A baffle plate 310 is slidably connected to the material inlet of the outer casing 105, covering the inlet. Brushes 312, facing the material, are connected to the bottom of the baffle plate 310 and the outer casing 105. The brushes 312 at the bottom of the baffle plate 310 face downwards and contact the top of the material; the brushes 312 on the outer casing 105 are located at the bottom of the inlet and face upwards, contacting the bottom of the material. The coordinated arrangement of the two brushes 312 allows for pre-cleaning of impurities on the surface of the material. Meanwhile, due to the inclined arrangement of the outer casing 105 on this side, impurities can be guided to one side during the process of blocking them, thereby moving them off the plate. Telescopic sleeves 311 are connected between the two sides of the wind deflector 310 and the outer casing 105. The telescopic sleeves 311 consist of a telescopic tube and a spring 306. The spring 306 is located inside the telescopic tube and has the function of driving the wind deflector 310 to move downwards.

[0038] Although the hot airflow entering the telescopic protective cover 104 can clean the surface of the mold 116, due to the limited airflow, it cannot effectively clean larger particles of impurities, resulting in debris still adhering to the surface of the mold 116. The following is a structure to improve the cleaning effect on the surface of the mold 116: Specifically, the blowing assembly includes a tilting frame 401, and an airflow pipe 402 is connected to the end of the tilting frame 401 facing the mold 116. An obliquely arranged nozzle 403 is connected to the outer wall of the airflow pipe 402, which is set towards the end away from the outer shell 105. The airflow pipe 402 is connected to a positive pressure pipe 114. The airflow ejected from the nozzle 403 will impact the mold 116, thereby cleaning away large impurities adhering to the surface of the mold 116. A lower sleeve 404 is connected to the side wall of the lower pressure plate 103, and a crossbar 405 is connected to the side wall of the lower sleeve 404. The end of the tilting frame 401 away from the airflow pipe 402 is rotatably connected to the crossbar 405. When the tilting frame 401 rotates upward, it will correspond to the position of the mold 116, thereby playing a role in cleaning the airflow of the mold 116.

[0039] Because the intermittent downward pressure of the upper pressure plate 102 can cause crush damage to the tilting frame 401, the following structure is provided to tilt the tilting frame 401 downward: Specifically, an upper sliding rod 406 located inside the lower sleeve 404 is connected to the side wall of the upper pressure plate 102. When the upper pressure plate 102 moves downward, it will drive the upper sliding rod 406 to move downward within the lower sleeve 404. A moving rod 407 is axially slidably connected inside the crossbar 405. A threaded groove 408 is opened inside the end of the tilting frame 401 away from the airflow pipe 402. A driving groove 409 is opened on the side wall of the upper sliding rod 406. One end of the moving rod 407 is connected to a pin located in the groove, and the other end of the moving rod 407 is connected to a pin located in the threaded groove 408. The end of the moving rod 407 near the tilting frame 401 is cylindrical and located inside the tilting frame 401, and the cylindrical end is provided with a pin located in the threaded groove 408. When the moving rod 407 moves axially, the pin located in the threaded groove 408 will drive the tilting frame 401 to rotate, so as to avoid the tilting frame 401 from colliding with the upper pressure plate 102.

[0040] The drive slide 409 is provided with a bend. When the upper slide rod 406 moves downward, the moving rod 407 moves toward the side closer to the flipping frame 401, causing the flipping frame 401 to flip downward. When the upper pressure plate 102 moves upward and the pin moves to the bend, the flipping frame 401 will move upward and remain horizontal, thus activating the airflow cleaning function for the mold 116.

[0041] In use, to facilitate the recycling of sheet metal scraps, excess scraps are usually punched and cut into small pieces for storage and transportation. These small metal pieces need to be discharged. The following structure facilitates the discharge of waste: Specifically, a discharge rack 501 is connected to the side of the telescopic protective cover 104 away from the outer shell 105. The discharge rack 501 is connected to a discharge hopper 502 and an airflow discharge pipe 503. The airflow discharge pipe 503 is externally connected to a negative pressure pipe 110 for discharging airflow containing debris and impurities. One end of the discharge hopper 502 faces the mold 116, and the end away from the mold 116 points downwards. The small pieces of waste are discharged from the discharge hopper 502.

[0042] Since the finished products punched off the sheet metal will fall onto the lower pressure plate 103, in order to facilitate the discharge of the finished products, the lower pressure plate 103 has a finished product discharge port 504 extending out of the frame 101 in the middle. A finished product material box is provided on the front side of the finished product discharge port 504 to hold the finished product material flowing out of the finished product discharge port 504.

[0043] Heating sheet metal such as aluminum and stainless steel before stamping has a significant benefit in reducing the generation of debris during the stamping process. It can also indirectly reduce the processing impact of impurities and debris. However, it is necessary to control the heating parameters carefully to avoid side effects. The specific reasons are as follows: A stamping method for an automotive sheet metal parts stamping device includes the following steps: S1. Feeding: The conveyor motor 304 drives one heating sleeve 112 to rotate. The heating sleeve 112 drives another heating sleeve 112 and the clamping roller 302 to rotate through the chain transmission structure 205 and the telescopic transmission structure 206. The cleaning motor 303 drives the cleaning sleeve 107 to rotate. The roll material to be processed is placed between the two clamping rollers 302, and the clamping rollers 302 convey the sheet material. S2. Cleaning: The board enters the outer shell 105 under the support of the clamping roller 302. The brush 312 on the outside of the outer shell 105 pre-cleans the surface of the board. The cleaning component inside the outer shell 105 cleans up the impurities on the surface of the board and sucks them away. S3, Heating: When moved between the heating components, the heating components heat the board, and the airflow blown out from the air outlet 113 keeps the board warm; S4, stamping: When the sheet metal moves to the mold 116, the upper pressure plate 102 drives the mold 116 to stamp the sheet metal. The finished parts fall into the finished product outlet 504 at the bottom and are discharged through the finished product outlet 504. The scraps are cut into pieces and discharged through the discharge hopper 502. S5. Debris removal: When the upper pressure plate 102 moves upward, the tilting frame 401 rotates upward and corresponds to the position of the upper mold 116. The airflow sprayed out cleans the mold 116, and the airflow in the telescopic protective cover 104 is discharged from the airflow discharge pipe 503.

[0044] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A stamping device for automotive sheet metal parts, comprising a frame (101), wherein an upper pressure plate (102) and a lower pressure plate (103) are internally connected to the frame (101), characterized in that: The outer ring surfaces of the upper pressure plate (102) and the lower pressure plate (103) are connected to a telescopic protective cover (104). One end of the telescopic protective cover (104) is connected to a shell (105). The shell (105) is connected to the interior of the protective cover. The interior of the shell (105) is provided with a cleaning component and a heating component. The two sides inside the telescopic protective cover (104) are provided with blowing components facing the mold (116). The cleaning assembly includes a cleaning roller frame (106) and a cleaning sleeve (107) rotatably connected to the outside of the cleaning roller frame (106). The outer wall of the cleaning sleeve (107) is provided with bristles (108). The cleaning roller frame (106) has an air suction groove (109) on the side facing the board. The air suction groove (109) is connected to a negative pressure pipe (110). The heating assembly includes a heating roller frame (111) and a heating sleeve (112) rotatably connected to the outside of the heating roller frame (111). The heating roller frame (111) has an air outlet groove (113) on the side facing the plate. The air outlet groove (113) is connected to a positive pressure pipe (114). A heating pipe (115) is connected inside the air outlet groove (113). A heating structure is installed inside the heating sleeve (112). Air flow holes are opened on the outer walls of the heating sleeve (112) and the cleaning sleeve (107). The heating sleeve (112) and the cleaning sleeve (107) are both connected to a rotation drive structure.

2. The stamping device for automotive sheet metal parts according to claim 1, characterized in that: The cleaning component has a dust cover (201) on the side away from the board. One end of the dust cover (201) is connected to the cleaning roller frame (106), and the other end of the dust cover (201) is rotatably connected to the cleaning sleeve (107). A reciprocating screw (202) is rotatably connected inside the dust cover (201). A cleaning moving block (203) is threaded on the outer wall of the reciprocating screw (202). The cleaning moving block (203) and the dust cover (201) are slidably connected. The bottom of the cleaning moving block (203) is provided with comb teeth that contact the bristles (108). A negative pressure pipe (110) is connected to the dust cover (201).

3. The stamping device for automotive sheet metal parts according to claim 2, characterized in that: A positive pressure airflow groove (204) is provided on the outer wall of the cleaning roller frame (106). A positive pressure pipe (114) and a negative pressure pipe (110) are connected to the side of the cleaning roller frame (106) connected to the dust cover (201). The positive pressure pipe (114) is connected to the positive pressure airflow groove (204), and the negative pressure pipe (110) is connected to the suction groove (109). One end of the reciprocating screw (202) is connected to one end of the cleaning sleeve (107) through a chain drive structure (205). The two cleaning roller frames (106) are connected to each other through a telescopic drive structure (206).

4. The stamping device for automotive sheet metal parts according to claim 3, characterized in that: The outer shell (105) has symmetrical support frames (301) inside. The bottom support frame (301) is connected to the frame (101). Each support frame (301) is equipped with a cleaning component and a heating component. The end of the support frame (301) away from the heating component is rotatably connected to a clamping roller (302). The two support frames (301) are connected by a compression component. One end of the heating sleeve (112) and the clamping roller (302) are connected by a chain drive structure (205). The two clamping rollers (302) are connected by a telescopic drive structure (206). The two sides of the outer shell (105) are connected to a cleaning motor (303) and a conveying motor (304). The output end of the cleaning motor (303) is connected to one of the cleaning sleeves (107), and the output end of the conveying motor (304) is connected to one of the cleaning sleeves (107).

5. The stamping device for automotive sheet metal parts according to claim 4, characterized in that: The extrusion assembly includes a threaded rod (305) connected to a bottom support frame (301), the top of the threaded rod (305) extending through the top support frame (301), and a bolt threaded to the top of the threaded rod (305), the bolt and the top support frame (301) being connected by a spring (306). The telescopic transmission structure (206) includes a spline rod (307) and a spline sleeve (308) that are slidably connected to each other, and a helical gear transmission structure (309) is connected to one end of the spline rod (307) and the spline sleeve (308) that are far apart from each other.

6. The stamping device for automotive sheet metal parts according to claim 1, characterized in that: The outer shell (105) is inclined on the side away from the telescopic protective cover (104). The inclined side of the outer shell (105) has a feed port for the plate to enter. A baffle plate (310) is slidably connected to the feed port of the outer shell (105). A brush (312) facing the plate is connected to the bottom of the baffle plate (310) and the outer shell (105). A telescopic sleeve (311) is connected between the two sides of the baffle plate (310) and the outer shell (105).

7. The stamping device for automotive sheet metal parts according to claim 1, characterized in that: The blowing assembly includes a tilting frame (401), with an airflow pipe (402) connected to one end of the tilting frame (401) facing the mold (116). An obliquely arranged nozzle (403) is connected to the outer wall of the airflow pipe (402). A positive pressure pipe (114) is connected to the outside of the airflow pipe (402). A lower sleeve (404) is connected to the side wall of the lower pressure plate (103). A crossbar (405) is connected to the side wall of the lower sleeve (404). The end of the tilting frame (401) away from the airflow pipe (402) is rotatably connected to the crossbar (405).

8. The stamping device for automotive sheet metal parts according to claim 7, characterized in that: The upper pressure plate (102) is connected to an upper sliding rod (406) located in the lower sleeve (404) on its side wall. A moving rod (407) is axially slidably connected in the crossbar (405). A threaded groove (408) is opened inside the end of the flipping frame (401) away from the airflow pipe (402). A driving groove (409) is opened on the side wall of the upper sliding rod (406). One end of the moving rod (407) is connected to a pin located in the groove. The other end of the moving rod (407) is connected to a pin located in the threaded groove (408).

9. The stamping device for automotive sheet metal parts according to claim 1, characterized in that: The telescopic protective cover (104) is connected to a discharge rack (501) on the side away from the outer shell (105). The discharge rack (501) is connected to a discharge hopper (502) and an airflow discharge pipe (503). One end of the discharge hopper (502) is set towards the mold (116). The middle part of the lower pressure plate (103) is provided with a finished product discharge port (504) extending out of the rack body (101).

10. A stamping method for an automotive sheet metal parts stamping device, using the automotive sheet metal parts stamping device as described in claim 9, characterized in that... Includes the following steps: S1. Feeding: Place the roll of material to be processed between two clamping rollers (302), and the clamping rollers (302) convey the sheet material. S2, Cleaning: The brush (312) on the outer shell (105) pre-cleans the surface of the board, and the cleaning component inside the outer shell (105) cleans up and sucks away the impurities on the surface of the board; S3, Heating: The heating component heats the board, and the airflow blown out from the air outlet (113) keeps the board warm; S4, Stamping: The upper pressure plate (102) drives the mold (116) to stamp the sheet metal. The finished parts are discharged through the finished product outlet (504), and the scrap is cut into pieces and discharged through the discharge hopper (502). S5, Debris removal: When the upper pressure plate (102) moves upward, the flipping frame (401) rotates upward, and the ejected airflow cleans the mold (116), and the airflow is discharged from the airflow discharge pipe (503).

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