Stamping process for automobile stamping part machining

Abstract

The invention relates to the technical field of stamping part machining, and discloses a stamping process for automobile stamping part machining, which comprises the following steps: S1, analyzing and designing a stamping die according to the structure of an automobile stamping part to obtain a lower die table and an upper die table, and mounting the lower die table and the upper die table on the top of a stamping machine; and S3, the strip is intermittently conveyed to the top of the lower die table through a feeding machine, the strip is punched downwards through the upper die table every time conveying is stopped, and the strip is made to be gradually formed into the automobile part of the needed structure through the processes of impacting, stretching and pressing. According to the stamping process for machining the automobile stamping parts, the problems that in the prior art, the manual cleaning operation efficiency is low, and if cleaning is not conducted in time, the situation that waste materials are squeezed and stuck or stamping is unqualified occurs, and machining potential safety hazards are brought to production of the automobile stamping parts can be effectively solved.

Description

Technical Field

[0001] The invention relates to the technical field of stamping parts processing, and 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 perform pressure processing on metal sheets, thereby 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 car bodies, chassis, engines and other parts. In order to meet the forming requirements of special parts, continuous stamping is often performed through continuous dies to ensure the production efficiency of automobile parts.

[0003] In the traditional continuous stamping process of automotive parts, the stamping waste generated by the strip will automatically fall and be discharged through the lower die hole. During long-term continuous stamping, the waste below the lower die hole will accumulate, requiring manual regular cleaning of the stamping waste. However, manual cleaning operation is inefficient, and if cleaning is not timely, it will cause the waste to be squeezed and stuck or the stamping to fail, bringing processing safety hazards to the production of automotive stamping parts. Summary of the invention

[0004] Technical issues solved

[0005] In view of 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 the manual cleaning operation efficiency is low, and if the cleaning is not timely, it will cause waste material to be squeezed and stuck or stamping will 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 according to the structure of automobile 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 the strip and install the rolled strip on the feeder;

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

[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, unloading the finished automobile parts after removing the excess material 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 all provided with lower die holes for punching and discharging;

[0016] A punching die is fixedly arranged at the bottom of the upper die table, and a punching head is arranged 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 transmission is arranged inside the punching machine, and the conveying mechanism includes two chains, and a conveyor belt is arranged outside the chains. The two chains are driven by two sets of sprockets, and the two sets of sprockets are automatically arranged on the outside of the bearing support plate, and the bearing support plate is fixedly installed inside the punching machine.

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

[0020] Among them, 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 comprises 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 pin are evenly arranged 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 arranged at the bottom of the sliding rod;

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

[0024] Furthermore, a variable diameter arc surface and a chamfered 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 action of first ascending and then moving horizontally, and the chamfered 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 arranged on the top of the bearing support plate, and 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 rail close to the unloading end is in an arc shape, which is used to guide the positioning pin to drive the cut-off strip to move downward for unloading.

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

[0030] Furthermore, 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;

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

[0032] Furthermore, 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 arranged 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 to realize the stamping action, so that when 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, 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 with the transmission of the conveyor belt, 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 inside to position the strip after the through hole B is formed, and a positioning pin will be inserted correspondingly for each through hole B formed by stamping. The intermittent movement of the positioning pin drives the intermittent conveying of the strip to ensure the feeding accuracy of the strip, and the residual strip material cut off at the last stamping station can be automatically unloaded under the action of the positioning pin, so that before collecting the strip-shaped residual material, the stamping die head cooperates with the lower module to automatically cut off the strip-shaped residual material, which is convenient for directly collecting the residual material after stamping, and there is no need to separately add cutting equipment for the strip-shaped residual material. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

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

[0038] Figure 2 It is a three-dimensional structural schematic 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 structure inside the punching machine base according to an embodiment of the present invention;

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

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

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

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

[0045] Fig. 9 This is a schematic diagram of the assembly structure of the shaft rod according to an embodiment of the present invention;

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

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

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

[0049] 1. Punching machine; 11. Lower die table; 12. Lower die hole; 13. Upper die table; 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. Limiting plate; 110. Support table; 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. Feeding chute; 51. Connecting pin; 52. Hydraulic push rod; 53. Hanging plate. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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 creative work are within the scope of protection of the present invention.

[0054] The present invention will be further described below in conjunction with the embodiments.

[0055] Example:

[0056] See also Figure 1-Figure 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, selecting the strip material 100 of the required size, and installing the rolled strip material 100 onto the feeder;

[0059] S3, the strip material 100 is intermittently conveyed to the top of the lower die table 11 by the feeder, and the upper die table 13 is used to press downward each time the conveying stops, so that the strip material 100 is gradually formed into an automobile part of the required 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 separately 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 installed on the top of the punching machine 1, and a plurality of lower die blocks 17 are fixedly installed 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 arranged at the bottom of the upper die table 13, and a punching head is arranged 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 arranged inside the punching machine 1. The conveying mechanism 3 includes two chains 33. The conveyor belt 2 is arranged outside the chain 33. The two chains 33 are driven by two sets of sprockets 32. The two sets of sprockets 32 are automatically arranged 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 moving groove 171 is provided inside the lower module 17, and a positioning pin 4 is slidably provided inside the moving groove 171, and the positioning pin 4 is evenly distributed outside 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 for intermittent transmission. A side baffle 18 is also fixedly provided on the top of the lower die table 11 for lateral limiting of 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 through the inner shaft 36. Brackets 34 for supporting the positioning pin 4 are evenly arranged 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 material 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 chamfered surface 392. The variable diameter arc surface 391 is used to push the sliding ball 48 to realize the action of first ascending and then moving horizontally, and the chamfered 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] A support 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 rail 311 for guiding the push plate 46 to slide to the top of the support rail 311 .

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

[0075] The eccentric wheel 39 near the unloading end is used to drive the last positioning pin 4 corresponding to the strip material 100 to move to the last stamping station.

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

[0077] An assembly groove 172 is provided inside the lower module 17 located at the second punching station, a splicing block 175 is symmetrically slidably provided inside the assembly groove 172, and an arc surface 176 is provided outside the splicing block 175 for cooperating with the end of the movable groove 171 to form a punching die hole of 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 slidably 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 and retractable elastic column 41, 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, and the conical positioning block 45 cooperates with the inner side of the positioning sleeve 342;

[0081] Among them, a clamping die 15 is slidably arranged on the outside of the stamping 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 arranged on the top of the bracket 34, and a limiting plate 19 is fixedly arranged on the inner side of the stamping machine 1 corresponding to the ball A341, and a support platform 110 for supporting the chain 33 is fixedly arranged on the inner side of the stamping machine 1.

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

[0083] refer to Figure 1-Figure 11 During the continuous stamping process of automobile parts, the stamping waste generated by the strip will automatically fall and be discharged through the lower die hole. During long-term continuous stamping, the waste below the lower die hole will accumulate, 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 all provided with lower die holes 12 for stamping discharge, and a stamping die head 14 is fixedly provided at the bottom of the upper die table 13. 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 with the transmission of the conveyor belt 2, replacing the traditional manual cleaning of waste, so as to ensure the safety of automobile parts stamping processing;

[0085] Loading method of strip 100:

[0086] The method of feeding the strip 100 involved in the present invention adopts the feeder in the prior art, so that the rolled strip 100 is automatically unwound under the action of the feeder, so that the free end of the strip 100 is moved and transported to the top of the lower die table 11. Since the feeding distance of a general feeder will have errors, and after rapid multiple stamping, there will be accumulated errors, the continuous die cannot rely solely on the feeding accuracy of the feeder for production; so during the initial feeding, when the unfolded end of the strip 100 is transported to the top of the lower die table 11 after a moving distance, the upper die table 13 drives the stamping die head 14 to perform a stamping action downward, so that a through hole B102 is formed on the inner side of the strip 100, and then the upper die table 13 is lifted upward to a certain height so that the stamping die head 14 moves 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 keep the strip 100 in a pressed state, and then the locating pin 4 is driven to slide on the bottom of the lower module 17 through the chain 33. When the locating pin 4 slides to align with the through hole B102, the locating 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 locating pin 4, the locating pin 4 pulls the strip 100 forward. When the first locating pin 4 drives the strip 100 to move to the next station, the chain 33 drives the next locating 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 located 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, and so on. 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 An assembly groove 172 is provided in 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 moved away from each other and reset under the action of the tension spring 178. 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 the positioning pins 4 improve the intermittent feeding accuracy of the strip 100; 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, so as to meet the continuous stamping feeding requirements of the strip 100.

[0088] Unloading method of strip material 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 on the end of the conveyor belt 2 through the lower die hole 12 for collection, and is automatically unloaded through the transmission and transportation of the conveyor belt 2, while the strip-shaped residual material unloading sampling of the strip material 100 is first cut into small pieces by traditional cutting equipment, and then the small pieces are collected, and a separate cutting equipment needs to be added, 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 unload the formed automobile parts, and at the same time, the excess strip 100 is cut off. After the automobile parts are unloaded, 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 unloading, thereby achieving the effect of automatically cutting before collecting the excess strip 100. It is worth noting that the chain 33 passes through the outside The bracket 34 on the side drives the positioning pin 4 to move, and the positioning pin 4 is supported by the slide bar 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 100 to move forward, and When the excess 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 excess material located outside the punching machine 1, thereby achieving the effect of automatically unloading the excess 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, and 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 material cutting 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 cleaning of the waste.

[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 positioning pin 4 moves forward a certain distance, 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 completely pass 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 method of automobile stamping parts:

[0097] When the upper die table 13 drives the punching die 14 to cooperate with the lower die block 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 discharge port of the discharge chute 5 is tilted downward under the drive of the hydraulic push rod 52, 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 inside 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 it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the 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 according to the structure of automobile 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 the strip and install the rolled strip on the feeder; S3, the strip is intermittently conveyed to the top of the lower die table by a feeder, and the upper die table presses downward each time the conveying stops, so that the strip is gradually formed into an automotive part of the required structure through the process of impact, stretching and pressing; 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, unloading the finished automobile parts after removing the excess material 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 all provided with lower die holes for punching and discharging; A punching die is fixedly arranged at the bottom of the upper die table, and a punching head is arranged at the bottom of the punching die corresponding to the lower die block, and the punching head cooperates with the lower die hole; The feed chute in S5 is slidably arranged inside the punching machine and is located at the bottom of the last punching station.

2. A stamping process for processing automobile stamping parts according to claim 1, characterized in that: A conveying mechanism for driving a conveyor belt transmission is arranged inside the punching machine. The conveying mechanism includes two chains. A conveyor belt is arranged outside the chains. The two chains are driven by two sets of sprockets. Both sets of sprockets are automatically arranged on the outside of a bearing support plate. The bearing support plate is fixedly installed inside the punching machine.

3. A stamping process for processing automobile stamping parts according to claim 2, characterized in that: A moving groove is provided on the inner side of the lower module, and a positioning pin is slidably provided on the inner side of the moving groove, and the positioning pins are evenly distributed on the outer side of the chain; Among them, 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.

4. A stamping process for processing automobile stamping parts according to claim 3, characterized in that: The conveying mechanism also 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 rod. Brackets for supporting the positioning pin are evenly arranged on the outer side of the chain. 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 arranged at the bottom of the sliding rod; Wherein, the sliding ball is pushed by the eccentric wheel to move upward first, and then moves horizontally to drive the belt material to be transported forward.

5. A stamping process for automobile stamping parts according to claim 4, characterized in that: The outer side of the eccentric wheel is provided with a variable diameter arc surface and a bevel surface, the variable diameter arc surface is used to push the sliding ball to realize the action of first rising and then horizontal movement, and the bevel 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 arranged on the top of the bearing support plate, and is used to support the push plate for horizontal movement.

6. A stamping process for processing automobile stamping parts according to claim 5, characterized in that: The two eccentric wheels are provided with two eccentric wheels, both of which are rotatably mounted on the inner side of the bearing support plate through the shaft, and the two eccentric wheels are synchronously linked; The eccentric wheel near the unloading end is used to drive the last positioning pin corresponding to the strip material to move to the last stamping station.

7. The stamping process for automobile stamping parts according to claim 5, characterized in that: One end of the support rail close to the unloading end is in an arc shape, which is used to guide the positioning pin to drive the cut strip to move downward for unloading.

8. The stamping process for automobile stamping parts according to claim 3, 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 for forming a stamping die hole for forming a through hole B by being squeezed by the stamping die head before stamping to cooperate with the end of the moving groove.

9. The stamping process for automobile stamping parts according to claim 5, 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 arranged between the bracket and the slide rod, a conical positioning block is fixedly arranged at the bottom of the slide rod, and the conical positioning block cooperates with the inner side of the positioning sleeve.

10. The stamping process for automobile stamping parts according to claim 4, 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 arranged outside the punching machine.

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