A stamping process for processing automobile stamping parts

Abstract

The present invention relates to the technical field of stamping parts processing, and discloses a stamping process for processing automobile stamping parts, comprising S1, analyzing and designing a stamping die according to the structure of the automobile stamping part, obtaining a lower die table and an upper die table, and installing them on the top of a stamping machine, S2, selecting a strip of material of a required size, and installing the rolled strip material on a feeder, and S3, intermittently conveying the strip material to the top of the lower die table through the feeder, and punching the strip material downward through the upper die table each time the conveying stops, so that the strip material is gradually formed into an automobile part of the required structure through the impact, stretching, and pressing process. The stamping process for processing automobile stamping parts can effectively solve the problem in the prior art that manual cleaning operation is low in efficiency, and if cleaning is not timely, waste material will be squeezed and stuck or stamping will be unqualified, which brings processing safety hazards to the production of automobile stamping parts.

Description

Technical Field

[0001] The present invention relates to the technical field of stamping parts processing, in particular to a stamping process for processing automobile stamping parts. Background Art

[0002] The stamping process refers to the use of a press to press metal sheets, causing them to undergo plastic deformation and form parts of the required shape and size. The stamping process is widely used in automobile manufacturing, such as manufacturing body, chassis, engine and other parts. In order to meet the forming requirements of special parts, continuous stamping is often performed through a progressive die to ensure the production efficiency of automobile parts.

[0003] During the traditional continuous stamping process of automotive parts, the stamping waste generated by the strip material will automatically fall and be discharged through the lower die hole. During long-term continuous stamping work, the waste will accumulate under the lower die hole, and the stamping waste needs to be cleaned manually at regular intervals. However, manual cleaning operation is inefficient, and if cleaning is not timely, the waste will be squeezed and stuck or the stamping will fail, which brings processing safety hazards to the production of automotive stamping parts. Summary of the Invention

[0004] Technical problems solved

[0005] In response to the above-mentioned shortcomings of the prior art, the present invention provides a stamping process for processing automobile stamping parts, which can effectively solve the problem in the prior art that manual cleaning operations are low in efficiency, and if cleaning is not timely, waste materials may be squeezed and stuck or stamping may be unqualified, which brings processing safety hazards to the production of automobile stamping parts.

[0006] Technical Solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] The present invention provides a stamping process for processing automobile stamping parts, comprising:

[0009] S1. Analyze and design the stamping die based on the structure of the automotive stamping parts, obtain the lower die table and the upper die table, and install them on the top of the stamping machine;

[0010] S2. Select the required size of strip material and install the rolled strip material on the feeder;

[0011] S3. The strip is intermittently conveyed to the top of the lower die table by a feeder. Each time the conveying stops, the upper die table presses downward, so that the strip is gradually formed into an automotive part with the required structure through the impact, stretching and pressing process;

[0012] S4, separating the remaining material from the strip at the last stamping station of the lower die table and the upper die table, and cutting the strip;

[0013] S5. After removing the excess material, the finished automobile parts are unloaded separately through the unloading chute;

[0014] S6. Finally, the conveyor belt under the lower die table is used to clean and collect the waste generated during the stamping process;

[0015] The lower die table in S1 is fixedly mounted on the top of the punching machine, and a plurality of lower die blocks are fixedly mounted on the top of the lower die table, and the inner sides of the lower die blocks are each provided with a lower die hole for punching and discharging;

[0016] A punching die is fixedly provided at the bottom of the upper die table, and a punching head is provided at the bottom of the punching die corresponding to the lower die block, and the punching head cooperates with the lower die hole;

[0017] The feed chute in S5 is slidably arranged inside the punching machine and is located at the bottom of the last punching station.

[0018] Furthermore, a conveying mechanism for driving a conveyor belt is provided inside the punching machine, and the conveying mechanism includes two chains, and a conveyor belt is provided on the outside of the chain. The two chains are driven by two sets of sprockets, and the two sets of sprockets are both provided on the outside of the bearing support plate, and the bearing support plate is fixedly installed inside the punching machine.

[0019] Furthermore, a movable groove is provided on the inner side of the lower module, and a positioning pin is slidably provided on the inner side of the movable groove, and the positioning pins are evenly distributed on the outer side of the chain;

[0020] A through hole B is punched on the inner side of the strip, and the through hole B cooperates with the positioning pin, and the positioning pin is driven by the chain to pull the strip for intermittent transmission.

[0021] Furthermore, the conveying mechanism further includes an eccentric wheel for driving the positioning pin to move upward and insert into the through hole B. The eccentric wheel is rotatably mounted on the inner side of the bearing support plate through the inner shaft, and brackets for supporting the positioning pins are evenly distributed on the outer side of the chain;

[0022] The bottom of the positioning pin is supported by two sliding rods, the sliding rods are slidably connected to the bracket, and a sliding ball is provided at the bottom of the sliding rod;

[0023] The sliding ball is pushed by the eccentric wheel to move upward first, and then moves horizontally to drive the strip material to be transported forward.

[0024] Furthermore, a variable diameter arc surface and an oblique surface are provided on the outer side of the eccentric wheel. The variable diameter arc surface is used to push the sliding ball to realize the movement of first rising and then moving horizontally, and the oblique surface is used to support and guide the next sliding ball to move to the outer side of the variable diameter arc surface.

[0025] Wherein, a support guide rail for supporting a push plate is fixedly provided on the top of the bearing support plate, which is used to support the push plate for horizontal movement.

[0026] Furthermore, two eccentric wheels are provided, and both eccentric wheels are rotatably mounted on the inner side of the bearing support plate through a shaft, and the two eccentric wheels are synchronously linked;

[0027] Among them, the eccentric wheel close to the unloading end is used to drive the last positioning pin corresponding to the strip material to move to the last stamping station.

[0028] Furthermore, one end of the support guide rail close to the blanking end is in an arc shape, which is used to guide the positioning pin to drive the cut strip to move downward for blanking.

[0029] Furthermore, an assembly groove is provided on the inner side of the lower module located at the second stamping station, and a splicing block is symmetrically slidably arranged on the inner side of the assembly groove. An arc-shaped surface is provided on the outer side of the splicing block, which is used to be squeezed by the stamping die head before stamping to cooperate with the end of the movable groove to form a stamping die hole with a through hole B.

[0030] Furthermore, the positioning pin includes an elastic and retractable elastic column, one end of the elastic column is fixed to the outside of the support rod, and the other end of the elastic column is slidably provided with a ball B;

[0031] A positioning sleeve is provided between the bracket and the slide rod, and a conical positioning block is fixedly provided at the bottom of the slide rod, and the conical positioning block cooperates with the inner side of the positioning sleeve.

[0032] Furthermore, the feed chute slides into the interior from one side of the punching machine, the feed opening of the feed chute is located outside the punching machine, and a hydraulic push rod for driving the feed chute to slide is provided on the outside of the punching machine.

[0033] Beneficial effects

[0034] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0035] The present invention is provided with a lower die table and an upper die table to cooperate with each other to realize the stamping action, so that the stamping die head at the bottom of the upper die table corresponds to the lower die block at the top of the lower die table to stamp the strip material, so that the waste generated by the stamping falls to the top of the conveyor belt through the lower die hole for collection, and the waste generated by multiple stations in the continuous stamping process is automatically collected as the conveyor belt is driven, replacing the traditional manual waste cleaning, and continuously cleaning the stamping waste, which can prevent the waste from being squeezed and stuck or the stamping from being unqualified if the cleaning is not timely; and when the conveying mechanism drives the conveyor belt to drive and run, the conveying mechanism will first drive the positioning pin to It moves up to the bottom of the lower die table and is aligned with the stamping position of the through hole B. It can be automatically inserted into the interior to position the strip after the through hole B is formed, and a positioning pin will be inserted correspondingly each time a through hole B is punched. The intermittent movement of the positioning pin drives the intermittent conveying of the strip to ensure the loading accuracy of the strip, and under the action of the positioning pin, the strip residue cut off at the last stamping station can be automatically unloaded, so that before collecting the strip residue, the stamping die head cooperates with the lower module to automatically cut off the strip residue, which is convenient for collecting the residue directly after stamping, and there is no need to separately add strip residue cutting equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0037] Figure 1 This is a flow chart of the stamping process for processing automotive stamping parts according to an embodiment of the present invention;

[0038] Figure 2 It is a three-dimensional structural diagram of an embodiment of the present invention;

[0039] Figure 3 It is a structural schematic diagram of an embodiment of the present invention;

[0040] Figure 4 This is a schematic diagram of the internal structure of the punching machine base according to an embodiment of the present invention;

[0041] Figure 5 This is a structural diagram of the strip material and the lower die table according to an embodiment of the present invention;

[0042] Figure 6 This is a structural diagram of the lower mold platform according to an embodiment of the present invention;

[0043] Figure 7 This is a schematic structural diagram of a splicing block according to an embodiment of the present invention;

[0044] Figure 8 This is a structural diagram of a conveying mechanism according to an embodiment of the present invention;

[0045] Figure 9 Schematic diagram of the assembly structure of the shaft rod according to an embodiment of the present invention;

[0046] Figure 10 This is a schematic structural diagram of an eccentric wheel according to an embodiment of the present invention;

[0047] Figure 11 Schematic diagram of the structure of the positioning pin according to an embodiment of the present invention.

[0048] The numbers in the figure represent: 100, strip material; 101, through hole A; 102, through hole B;

[0049] 1. Punching machine; 11. Lower die plate; 12. Lower die hole; 13. Upper die plate; 14. Punching die head; 15. Pressing die; 16. Connecting piece; 17. Lower die block; 171. Moving groove; 172. Assembly groove; 173. Support block; 174. Slider; 175. Joint block; 176. Arc surface; 177. Inclined surface; 178. Tension spring; 18. Side baffle; 19. Limit plate; 110. Support plate; 111. Round rod; 112. Mounting plate

[0050] 2. Conveyor belt; 3. Conveying mechanism; 31. Bearing support plate; 32. Sprocket; 33. Chain; 34. Bracket; 341. Ball A; 342. Positioning sleeve; 35. Connecting plate; 36. Shaft; 37. Pulley; 38. Transmission belt; 39. Eccentric wheel; 391. Variable diameter arc surface; 392. Beveled surface; 310. Motor; 311. Support rail;

[0051] 4. Positioning pin; 41. Elastic column; 42. Ball B; 43. Support rod; 44. Sliding rod; 45. Conical positioning block; 46. Push plate; 47. Ball seat; 48. Sliding ball; 49. Wedge block;

[0052] 5. Feed chute; 51. Connecting pin; 52. Hydraulic push rod; 53. Hanging plate. DETAILED DESCRIPTION

[0053] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0054] The present invention will be further described below with reference to the embodiments.

[0055] Example:

[0056] See also Figures 1-11 The present invention provides a technical solution: a stamping process for processing automobile stamping parts, comprising:

[0057] S1. Analyze and design the stamping die according to the structure of the automobile stamping parts, obtain the lower die table 11 and the upper die table 13, and install them on the top of the stamping machine 1;

[0058] S2. Select the strip material 100 of the required size and install the rolled strip material 100 on the feeder;

[0059] S3. The strip material 100 is intermittently conveyed to the top of the lower die table 11 by the feeder. Each time the conveying stops, the upper die table 13 presses downward to gradually shape the strip material 100 into an automotive part of the desired structure through the impact, stretching, and pressing process.

[0060] S4, separating the remaining material of the strip 100 at the last stamping station of the lower die table 11 and the upper die table 13, and cutting the strip 100;

[0061] S5, unloading the finished automobile parts after removing the excess material through the unloading chute 5;

[0062] S6. Finally, the conveyor belt 2 under the lower die table 11 is used to clean and collect the waste generated during the stamping process;

[0063] The lower die table 11 in S1 is fixedly mounted on the top of the punching machine 1, and a plurality of lower die blocks 17 are fixedly mounted on the top of the lower die table 11. The inner sides of the lower die blocks 17 are all provided with lower die holes 12 for punching and discharging.

[0064] A punching die 14 is fixedly provided at the bottom of the upper die table 13, and a punching head is provided at the bottom of the punching die 14 corresponding to the lower die block 17, and the punching head cooperates with the lower die hole 12;

[0065] The material discharge chute 5 in S5 is slidably arranged inside the punching machine 1 and is located at the bottom of the last punching station.

[0066] A conveying mechanism 3 for driving the conveyor belt 2 is provided inside the punching machine 1. The conveying mechanism 3 includes two chains 33. The conveyor belt 2 is provided on the outside of the chain 33. The two chains 33 are driven by two sets of sprockets 32. Both sets of sprockets 32 are provided on the outside of the bearing support plate 31. The bearing support plate 31 is fixedly installed inside the punching machine 1 through the connecting plate 35.

[0067] A movable groove 171 is provided on the inner side of the lower module 17. A positioning pin 4 is slidably provided on the inner side of the movable groove 171. The positioning pins 4 are evenly distributed on the outer side of the chain 33.

[0068] Among them, a through hole B102 is punched on the inner side of the strip 100, and the through hole B102 cooperates with the positioning pin 4, and the positioning pin 4 is driven by the chain 33 to pull the strip 100 intermittently. A side baffle 18 is also fixed on the top of the lower mold table 11 for laterally limiting the strip 100.

[0069] The conveying mechanism 3 also includes an eccentric wheel 39 for driving the positioning pin 4 to move upward and insert into the through hole B102. The eccentric wheel 39 is rotatably mounted on the inner side of the bearing support plate 31 via the inner shaft 36. Brackets 34 for supporting the positioning pin 4 are evenly distributed on the outer side of the chain 33.

[0070] A support rod 43 is fixedly provided at the bottom of the positioning pin 4, two slide rods 44 are fixedly provided at the bottom of the support rod 43, a push plate 46 is fixedly provided at the bottom of the slide rod 44, and a sliding ball 48 is slidably provided at the bottom of the push plate 46 through a ball seat 47;

[0071] The sliding ball 48 is pushed by the eccentric wheel 39 to move upward first, and then moves horizontally to drive the strip 100 to be transported forward.

[0072] The outer side of the eccentric wheel 39 is provided with a variable diameter arc surface 391 and a beveled surface 392. The variable diameter arc surface 391 is used to push the sliding ball 48 to realize the movement of first rising and then horizontal movement. The beveled surface 392 is used to support and guide the next sliding ball 48 to move to the outer side of the variable diameter arc surface 391.

[0073] Among them, a support guide rail 311 for supporting the push plate 46 is fixedly provided on the top of the bearing support plate 31, and a wedge block 49 is fixedly provided at the bottom of the push plate 46 corresponding to the support guide rail 311 to guide the push plate 46 to slide to the top of the support guide rail 311.

[0074] Two eccentric wheels 39 are provided. Both eccentric wheels 39 are rotatably mounted on the inner side of the bearing support plate 31 via a shaft 36. A pulley 37 is fixedly mounted on one end of each shaft 36. The two pulleys 37 are linked by a transmission belt 38. One of the shafts 36 rotates under the drive of a motor 310, which is fixedly mounted on the outer side of the bearing support plate 31.

[0075] Among them, the eccentric wheel 39 close to the unloading end is used to drive the last positioning pin 4 corresponding to the strip 100 to move to the last stamping station.

[0076] One end of the support rail 311 close to the blanking end is arc-shaped, which is used to guide the positioning pin 4 to drive the cut strip 100 to move downward for blanking. A mounting plate 112 is fixedly provided on the outside of the punching machine 1 at the blanking end for installing the waste collection structure.

[0077] An assembly groove 172 is provided on the inner side of the lower die block 17 located at the second stamping station. A splicing block 175 is symmetrically slidably provided on the inner side of the assembly groove 172. An arc-shaped surface 176 is provided on the outer side of the splicing block 175 for cooperating with the end of the movable groove 171 to form a stamping die hole for the through hole B102.

[0078] Among them, a through hole A101 is opened on the inner side of the strip 100 at the first stamping station, and the through hole A101 is moved to the second stamping station to be aligned with the splicing block 175. The splicing blocks 175 are each provided with an inclined surface 177 on the side away from each other, and the splicing blocks 175 can be automatically reset under the tension of the tension spring 178; specifically, a support block 173 is fixedly provided on the inner side of the assembly groove 172, and a slider 174 is slidingly provided on the top of the support block 173. The sliders 174 are fixedly provided on both sides of the splicing block 175, and a tension spring 178 is provided on the side of the slider 174 away from the splicing block 175.

[0079] The positioning pin 4 includes an elastic column 41 that is elastically retractable. One end of the elastic column 41 is fixed to the outside of the support rod 43, and the other end of the elastic column 41 is slidably provided with a ball B42.

[0080] A positioning sleeve 342 is provided between the bracket 34 and the slide rod 44 , and a conical positioning block 45 is fixedly provided between the slide rod 44 and the push plate 46 . The conical positioning block 45 cooperates with the inner side of the positioning sleeve 342 .

[0081] Among them, a clamping die 15 is slidingly provided on the outside of the punching die head 14, and the clamping die 15 is installed at the bottom of the upper die table 13 through a connecting piece 16, and is used to clamp the strip 100 when the positioning pin 4 is initially inserted; specifically, a ball A341 is also provided on the top of the bracket 34, and a limiting plate 19 is fixedly provided on the inside of the punching machine 1 corresponding to the ball A341, and a support platform 110 for supporting the chain 33 is fixedly provided on the inside of the punching machine 1.

[0082] The discharge chute 5 slides into the interior from one side of the punching machine 1. The discharge port of the discharge chute 5 is located on the outside of the punching machine 1. A hydraulic push rod 52 is rotatably provided on the outside of the discharge port through a connecting pin 51. The hydraulic push rod 52 is rotatably provided on the outside of the punching machine 1. A hanging plate 53 is fixedly provided on the side of the bottom of the discharge chute 5 away from the discharge port. A round rod 111 for supporting the discharge port is fixedly provided on the corresponding hanging plate 53 on the outside of the punching machine 1.

[0083] refer to Figures 1-11 During the continuous stamping process of automobile parts, the stamping waste generated by the strip material will automatically fall and be discharged through the lower die hole. During long-term continuous stamping work, the waste will accumulate under the lower die hole, and it is necessary to manually clean the stamping waste regularly. However, the manual cleaning operation is inefficient, and if the cleaning is not timely, the waste will be squeezed and stuck or the stamping will be unqualified, which brings processing safety hazards to the production of automobile stamping parts.

[0084] In order to overcome the above-mentioned defects, the present invention designs a stamping process for automobile stamping parts processing, wherein the lower die table 11 in S1 is fixedly installed on the top of the stamping machine 1, and a plurality of lower modules 17 are fixedly installed on the top of the lower die table 11. The inner sides of the lower modules 17 are provided with lower die holes 12 for stamping and discharging. A stamping die head 14 is fixedly provided at the bottom of the upper die table 13, and a stamping head is provided at the bottom of the stamping die head 14 corresponding to the lower module 17. The stamping head cooperates with the lower die hole 12 so that the waste generated by the stamping falls through the lower die hole 12 to the top of the conveyor belt 2 for collection, and the waste generated by multiple stations in the continuous stamping process is automatically collected as the conveyor belt 2 drives, replacing the traditional manual waste cleaning to ensure the safety of the automobile parts stamping processing;

[0085] Loading method of strip 100:

[0086] The strip material 100 loading method involved in the present invention adopts the feeder in the prior art, so that the rolled strip material 100 is automatically unwound under the action of the feeder, so that the free end of the strip material 100 is moved and transported to the top of the lower die table 11. Since the feeding distance of the general feeder will have errors, and after multiple rapid stamping, there will be cumulative errors, the continuous die cannot rely solely on the feeding accuracy of the feeder for production; so during the initial loading, when the unfolded end of the strip material 100 is transported to the top of the lower die table 11 and moves a distance, the upper die table 13 drives the stamping die head 14 downward to perform a stamping action, so that a through hole B102 is formed on the inner side of the strip material 100, and then the upper die table 13 is lifted upward to a certain height so that the stamping die head 14 is away from the lower module 17 on the top of the lower die table 11. At this time, the pressing die 15 on the outside of the punching die head 14 continues to maintain a pressing state on the strip 100, and then the positioning pin 4 is driven by the chain 33 to slide on the bottom of the lower module 17. When the positioning pin 4 slides to align with the through hole B102, the positioning pin 4 can be automatically inserted into the inner side of the through hole B102 under the action of the elastic column 41, and then the pressing die 15 is lifted away from the top of the strip 100 through the upper die table 13; then, under the forward driving action of the chain 33 on the positioning pin 4, the positioning pin 4 pulls the strip 100 forward. When the first positioning pin 4 drives the strip 100 to move to the next workstation, the chain 33 drives the next positioning pin 4 to align with the bottom of the punching position When the stamping action is performed again, the previous stamping station stamps the strip 100 again to form a through hole B102. When the upper die table 13 drives the stamping die head 14 and the pressing die 15 to rise, the locating pin 4 at the bottom of the stamping position is automatically inserted into the inside of the through hole B102, and driven by the locating pin 4, the strip 100 moves forward a certain distance. Similarly, each through hole B102 formed by stamping will be positioned accordingly with the inserted locating pin 4. It is worth noting that the locating pin 4 moves along the moving groove 171 on the inner side of the lower module 17 under the drive of the chain 33. The setting of the moving groove 171 causes the forming position of the through hole B102 to be semicircular, which affects the stamping quality. Therefore, at the end of the moving groove 171, the through hole B102 is moved to the inner side of the lower module 17. An assembly groove 172 is provided on the part, and a splicing block 175 is slidably arranged inside the assembly groove 172. During stamping, the die head corresponding to the bottom of the stamping die head 14 first cooperates with the inclined surface 177 to squeeze the splicing blocks 175 together, so that the arc surface 176 on the outside of the splicing block 175 cooperates with the end of the movable groove 171 to form a complete lower die hole 12. When the stamping die head 14 is lifted, the splicing blocks 175 are automatically reset away from each other under the action of the tension spring 178, and in order to enable the stamping die head 14 to directly contact the splicing block 175 when stamping to form the through hole B102, when the strip 100 passes through the first stamping station, the stamping die head 14 and the lower module 17 cooperate with each other to stamp out the through hole A101.

[0087] Its advantages are that the evenly distributed positioning pins 4 drive the strip 100 to advance intermittently, so that the strip 100 is moved forward by the pulling action of the positioning pins 4, thereby realizing the intermittent feeding effect in the continuous stamping process of automobile parts, and improving the intermittent feeding accuracy of the strip 100 through the positioning pins 4; and the positioning pins 4 circulate under the drive of the chain 33, and can automatically align with the through hole B102 formed by stamping and insert to meet the continuous stamping feeding requirements of the strip 100.

[0088] Unloading method of strip 100:

[0089] In the continuous stamping process of automobile parts, the unloading process of the strip material 100 mainly includes unloading of punching waste and unloading of strip-shaped residual material of the strip material 100; the punching waste in the stamping process can fall through the lower die hole 12 to the end of the conveyor belt 2 for collection, and is automatically unloaded through the transmission and transportation of the conveyor belt 2, while the strip-shaped residual material of the strip material 100 is unloaded by the traditional cutting equipment that first cuts the strip-shaped residual material into small pieces and then collects the small pieces. It also requires an additional separate cutting equipment, which cannot be directly collected in the last stamping process. Therefore, when the strip 100 is at the last stamping station, the stamping die 14 cooperates with the lower module 17 to cut and blank the formed automobile parts, and at the same time cuts off the excess strip 100. After the automobile parts are blanked, the chain 33 continues to convey the positioning pin 4 forward, so that the positioning pin 4 drives the cut excess to move to the outside of the stamping machine 1 for automatic blanking, thereby achieving the effect of automatically cutting before collecting the excess strip 100. It is worth noting that the chain 33 passes through the outer The bracket 34 on the side drives the positioning pin 4 to move, and the positioning pin 4 is supported by the slide rod 44 and can be lifted and lowered on the top of the bracket 34. Before the positioning pin 4 is inserted into the through hole B102, the eccentric wheel 39 in the conveying mechanism 3 pushes the sliding ball 48 to drive the positioning pin 4 to move upward, and the eccentric wheel 39 pushes the sliding ball 48 to move horizontally, so that the sliding ball 48 drives the wedge block 49 at the bottom of the push plate 46 to slide to the top of the support guide rail 311 for limiting, so as to ensure the stability of the positioning pin 4 driving the belt material 100 to move forward, and When the material 100 is unloaded, the wedge block 49 automatically disengages from the arc section at the end of the support guide rail 311, so that the positioning pin 4 automatically moves downward under the drive of the push plate 46 and the sliding ball 48, and then automatically disengages from the cut-off residual material located outside the punching machine 1, thereby achieving the effect of automatically unloading the residual material 100 of the strip material; and in order to ensure the stability of the movement of the rolled positioning pin 4, a separate eccentric wheel 39 is also provided on the inner side of the bearing support plate 31. The two eccentric wheels 39 are synchronously linked to make the sliding ball 48 on the outer side of the chain 33 more evenly stressed.

[0090] It is worth mentioning that the above-mentioned blanking method has the following advantages:

[0091] Advantage 1: The conveyor belt 2 is driven by the bracket 34 outside the chain 33 to collect the stamping waste generated during the continuous stamping process and automatically transport it to the unloading end of the stamping machine 1, replacing the traditional manual waste cleaning.

[0092] Advantage two: before driving the positioning pin 4 to move, the chain 33 drives the positioning pin 4 to automatically rise to a certain height through the eccentric wheel 39, and automatically slides to the top of the support guide rail 311 for support under the drive of the eccentric wheel 39. Before the positioning pin 4 is inserted into the through hole B102, the positioning pin 4 can be automatically pressed against the bottom of the lower mold table 11, and when unloading, the positioning pin 4 automatically moves downward and out of the through hole B102 under the action of gravity, so as to facilitate the automatic unloading of the cut-off residual material of the strip 100.

[0093] Advantage three: under the action of the eccentric wheel 39, the positioning pin 4 can be automatically lifted and translated a certain distance, so that the positioning pin 4 drives the chain 33 to transmit during translation, thereby providing transmission power for the chain 33 to drive the conveyor belt 2 to perform waste cleaning operations, while meeting the intermittent feeding needs of the positioning pin 4.

[0094] Advantage four: the eccentric wheel 39 intermittently drives the positioning pin 4 forward, so that after each forward movement of the positioning pin 4, the positioning pin 4 drives the chain 33 to transmit a certain distance, so that the chain 33 drives the next positioning pin 4 to be located at the top of the eccentric wheel 39 and automatically cooperates with it, and each positioning pin 4 can be driven forward during the rotation of the eccentric wheel 39, so that the positioning pin 4 drives the strip 100 to pass completely through the lower die table 11 to achieve continuous stamping.

[0095] Advantage five: when the eccentric wheel 39 pushes the positioning pin 4 to rise and press against the bottom of the lower mold table 11, the sliding ball 48 is pushed by the eccentric wheel 39 to move the sliding rod 44 upward on the inside of the positioning sleeve 342 until the conical positioning block 45 fits inside the positioning sleeve 342, so that the sliding rod 44 is automatically corrected and positioned before being inserted upward.

[0096] Cutting methods for automobile stamping parts:

[0097] When the upper die table 13 drives the punching die 14 to cooperate with the lower module 17 on the top of the lower die table 11 to punch out the formed automobile parts from the strip 100, the automobile parts fall into the inside of the discharge chute 5. During the process of the upper die table 13 driving the punching die 14 to lift, the hydraulic push rod 52 on the outside of the punching machine 1 drives the discharge chute 5 to slide outward until the hanging plate 53 at the bottom of the discharge chute 5 is hung on the outside of the round rod 111. Then, the hydraulic push rod 52 drives the discharge port of the discharge chute 5 to tilt downward, and the automobile parts located inside the discharge chute 5 are automatically discharged. Then, the positioning pin 4 moves forward a certain distance again, and then the hydraulic push rod 52 drives the discharge chute 5 to slide into the interior of the punching machine 1, so as to realize the separate discharge of automobile parts without interfering with the intermittent movement of the positioning pin 4.

[0098] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A stamping process for automobile stamping parts processing, characterized in that: include: S1. Analyze and design the stamping die based on the structure of the automotive stamping parts, obtain the lower die table and the upper die table, and install them on the top of the stamping machine; S2. Select the required size of strip material and install the rolled strip material on the feeder; S3. The strip is intermittently conveyed to the top of the lower die table by a feeder. Each time the conveying stops, the upper die table presses downward, so that the strip is gradually formed into an automotive part with the required structure through the impact, stretching and pressing process; S4, separating the remaining material from the strip at the last stamping station of the lower die table and the upper die table, and cutting the strip; S5. After removing the excess material, the finished automobile parts are unloaded separately through the unloading chute; S6. Finally, the conveyor belt under the lower die table is used to clean and collect the waste generated during the stamping process; The lower die table in S1 is fixedly mounted on the top of the punching machine, and a plurality of lower die blocks are fixedly mounted on the top of the lower die table, and the inner sides of the lower die blocks are each provided with a lower die hole for punching and discharging; A punching die is fixedly provided at the bottom of the upper die table, and a punching head is provided at the bottom of the punching die corresponding to the lower die block, and the punching head cooperates with the lower die hole; Wherein, the feed chute in S5 is slidably arranged inside the punching machine and is located at the bottom of the last punching station; Material toggling mechanism, its both sides respectively have a cylinder pressure, and the cylinder pressure bar connects swing arm, and the swing arm end face has hook portion, and a bar passes position between the end of two swing arms and the hook portion. The sliding ball is pushed by the eccentric wheel to move upward first, and then moves horizontally to drive the strip material to be transported forward.

2. A stamping process for processing automobile stamping parts according to claim 1, characterized in that: The outer side of the eccentric wheel is provided with a variable diameter arc surface and an oblique surface. The variable diameter arc surface is used to push the sliding ball to realize the movement of first rising and then horizontal movement. The oblique surface is used to support and guide the next sliding ball to move to the outer side of the variable diameter arc surface. Wherein, a support guide rail for supporting a push plate is fixedly provided on the top of the bearing support plate, which is used to support the push plate for horizontal movement.

3. The stamping process for processing automobile stamping parts according to claim 2, characterized in that: There are two eccentric wheels, both of which are rotatably mounted on the inner side of the bearing support plate through a shaft, and the two eccentric wheels are synchronously linked; Among them, the eccentric wheel close to the unloading end is used to drive the last positioning pin corresponding to the strip material to move to the last stamping station.

4. The stamping process for processing automobile stamping parts according to claim 2, characterized in that: One end of the support rail close to the blanking end is in an arc shape, which is used to guide the positioning pin to drive the cut strip to move downward for blanking.

5. The stamping process for processing automobile stamping parts according to claim 1, characterized in that: An assembly groove is provided on the inner side of the lower module located at the second stamping station, and a splicing block is symmetrically slidably arranged on the inner side of the assembly groove. An arc-shaped surface is provided on the outer side of the splicing block, which is used to be squeezed by the stamping die head before stamping to match the end of the moving groove to form a stamping die hole with a through hole B.

6. The stamping process for processing automobile stamping parts according to claim 2, characterized in that: The positioning pin comprises an elastic and retractable elastic column, one end of which is fixed to the outside of the support rod, and the other end of which is slidably provided with a ball B; A positioning sleeve is provided between the bracket and the slide rod, and a conical positioning block is fixedly provided at the bottom of the slide rod, and the conical positioning block cooperates with the inner side of the positioning sleeve.

7. The stamping process for processing automobile stamping parts according to claim 1, characterized in that: The material discharge chute slides into the interior from one side of the punching machine, the material discharge port of the material discharge chute is located outside the punching machine, and a hydraulic push rod for driving the material discharge chute to slide is provided on the outside of the punching machine.

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