Stamping forming device for automobile chassis anti-collision beam

Abstract

The application discloses a stamping forming device for an automobile chassis anti-collision beam, which comprises an upper die and a lower die, wherein the upper die comprises an upper die base and an upper stripper, at least two mutually parallel and vertically downward guide columns are arranged on the upper die base, corresponding guide holes are formed in the upper stripper, the guide columns are movably arranged in the guide holes of the upper stripper in a one-to-one correspondence, guide inclined surfaces and punch mounting steps are symmetrically arranged on the two sides of the upper stripper, punches are arranged in the punch mounting steps, and inclined pressing blocks corresponding to the corresponding side punches are symmetrically arranged on the two sides of the upper die base; the lower die comprises a lower die base, support blocks and lateral limiting blocks located on the two sides of the lower die base are arranged on the lower die base, a workpiece positioning groove is formed in the support blocks, a sliding block and an elastic clamping block are arranged on the two sides of the support blocks, respectively, and an inner bottom plate, an inner forming core rod and an inverted T-shaped inclined plug block for positioning a workpiece are arranged on the support blocks in a workpiece placement area. The application is mainly used for forming bosses on the two sides of the automobile chassis anti-collision beam.

Description

Technical Field

[0001] This invention relates to a stamping forming apparatus, specifically to a stamping forming apparatus for an automotive chassis anti-collision beam. Background Technology

[0002] As we all know, the chassis anti-collision beam is a basic safety feature of vehicles. With the rapid development of the automotive industry and the continuous improvement of people's safety awareness, the requirements for vehicle safety performance are also increasing. Currently, in the production process of automotive chassis anti-collision beams, the two protrusions on each side of the beam are formed in two stages. That is, after stamping one side of the workpiece on the mold, the other side is stamped. This stamping method is prone to misalignment of the workpiece, resulting in the protrusions not being on the same horizontal line. Moreover, the need for two loading and unloading and two stamping processes greatly increases processing time, reduces production efficiency, increases production costs, and increases the defect rate due to human factors. In addition, because the length of the workpiece cannot be perfectly consistent during the cutting process, the dimensional accuracy of the forming position cannot be guaranteed. Furthermore, the shape of the protrusions stamped using the above method does not meet customer requirements, and the surface of the workpiece will be deformed by the extrusion of the second stamping, thus affecting the stamping quality. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a stamping forming device for an automobile chassis anti-collision beam that can stamp the bosses on both sides of the workpiece in one step.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: a stamping forming device for an automobile chassis anti-collision beam, comprising: an upper die and a lower die, wherein the workpiece of the automobile chassis anti-collision beam is a square tube, the upper die comprising: an upper die base, an upper clamping plate and an upper ejector plate, the upper clamping plate being disposed on the bottom surface of the upper die base, the upper clamping plate being provided with at least two mutually parallel and vertically downward guide pillars, the upper ejector plate being located below the upper clamping plate, the upper ejector plate being provided with guide holes corresponding to all the guide pillars, the guide pillars being movably inserted into the guide holes of the upper ejector plate, a plurality of in-die elastic components being distributed between the upper ejector plate and the upper clamping plate, the upper ejector plate being symmetrically provided with a pair of inwardly inclined guide slopes on both sides of the workpiece, and guide slopes corresponding to the guide slopes being disposed on both sides of the workpiece. The inner end of the inclined surface is connected to a punch mounting step, and at least one punching guide hole is provided on the punch mounting step, which is arranged obliquely along the guide inclined surface. A punch is placed on the guide inclined surface of the upper ejector plate, and the end of the punch is movably inserted into the corresponding punching guide hole. A pair of inclined pressure blocks are symmetrically arranged on both sides of the upper die base, which respectively cooperate with the punch on the corresponding side. The specific arrangement is as follows: the upper clamping plate is provided with an inclined pressure block mounting through hole that cooperates with the upper part of the inclined pressure block. The upper part of the inclined pressure block is inserted into the corresponding inclined pressure block mounting through hole on the upper clamping plate and connected to the upper die base. The bottom surface of the upper ejector plate is provided with a push-up boss on both sides of the workpiece. The side of the push-up boss near the workpiece is provided with a push-up slope near the bottom end of the push-up boss.The lower die includes: a lower die frame, a lower die base mounted on the lower die frame, lateral limiting blocks on both sides of the lower die base, a support block on the lower die base between the lateral limiting blocks, a workpiece placement area on the support block, and clamping blocks and sliding blocks arranged sequentially from the inside to the outside on both sides of the workpiece placement area on the support block, which can slide along a direction perpendicular to the insertion direction of the workpiece. The clamping blocks have clearance notches corresponding to the punch, and a pushing elastic component is provided between the clamping blocks and the sliding blocks. A sliding limiting mechanism is provided between the lateral limiting blocks and the sliding blocks on the same side. Tensioning elastic components are respectively provided between the two ends of the sliding block and the corresponding ends of the lateral limiting block. A guide ramp is provided near the top of the sliding block on the side of the sliding block away from the workpiece, which cooperates with the pushing ramp on the pushing boss. The support block has an internal base plate that cooperates with the workpiece in the workpiece placement area. Along the insertion direction of the workpiece, the internal base plate has a vertically downward base plate guide block at its far end (inner end). A base plate guide rail that cooperates with the base plate guide block is provided on the lower mold base. A base plate guide rail that cooperates with the base plate guide rail is provided on the base plate guide block. The bottom plate guide block is slidably mounted on the bottom plate guide rail via the bottom plate guide groove. An elastic component is provided between the bottom plate guide block and the lower die base. The upper surface of the inner bottom plate is an inclined surface sloping from the inner end to the outer end. A pair of inner forming mandrels are symmetrically arranged on both sides above the inner bottom plate on the support block. The inner forming mandrels have stamping recesses that correspond one-to-one with the stamping guide holes on the upper ejector plate. Along the insertion direction of the workpiece, the bottom surface and inner side surface of the inner forming mandrel are inclined surfaces sloping from the far end to the near end. The inner end of the inner forming mandrel is provided with… The lower mold base has a mandrel guide block, and a mandrel guide seat is provided on the mandrel guide support. The mandrel guide seat has symmetrically formed mandrel guide grooves corresponding to the corresponding mandrel guide blocks. The mandrel guide blocks are slidably disposed in the corresponding mandrel guide grooves. An inverted "T"-shaped inclined plug is inserted between the inner base plate and the two inner forming mandrels. Along the insertion direction of the workpiece, the inclined plug has five inclined surfaces that correspond one-to-one with the upper surface of the inner base plate and the bottom and inner side surfaces of the pair of inner forming mandrels, sloping from the near end to the far end.

[0005] As a preferred embodiment, in the stamping forming device for an automotive chassis anti-collision beam, the support block is provided with a workpiece positioning groove in the workpiece placement area; the specific installation method of the clamping block and the sliding block is as follows: at least one clamping guide groove is respectively opened on both sides of the support block, which is perpendicular to the workpiece positioning groove. The clamping guide groove has a larger bottom and a smaller opening. The bottom of the clamping block and the sliding block are provided with guide bosses that cooperate with the clamping guide grooves on the support block. The guide bosses on the clamping block and the sliding block are slidably disposed in the clamping guide grooves on the corresponding sides.

[0006] As a preferred embodiment, in the stamping forming device for an automotive chassis anti-collision beam, a columnar protrusion parallel to its direction of movement is provided on the tail of the punch, and a punch elastic component is sleeved on the columnar protrusion. The two ends of the punch elastic component press against the tail of the punch and the punch mounting step of the upper release plate, respectively.

[0007] As a preferred embodiment, in the stamping forming device for an automotive chassis anti-collision beam, the upper stripper is symmetrically provided with two pairs of stamping guide holes on both sides of the workpiece, and each of the two punches on the same side is provided with a pushing part that extends vertically outward at its tail.

[0008] As a preferred embodiment, in the stamping forming apparatus for an automotive chassis anti-collision beam, at least one workpiece pushing device is further provided on the lower die frame, and the drive rod of the workpiece pushing device is movably inserted into the lower die base and the support block.

[0009] As a preferred embodiment, in the stamping forming device for an automotive chassis anti-collision beam, the lower die base is further provided with a slant block pushing and shifting mechanism that cooperates with the slant block. This slant block pushing and shifting mechanism includes: a pushing cylinder mounting base, and a pushing cylinder mounted on the pushing cylinder mounting base via a cylinder mounting plate. The drive rod of the pushing cylinder is provided with a connecting seat connected to the slant block, and a caster wheel is provided on the bottom surface of the connecting seat. The pushing cylinder mounting base has a mounting sliding groove with a larger bottom and a smaller opening. The cylinder mounting plate is provided with a displacement sliding boss that mates with the mounting sliding groove. The displacement sliding boss is located in the mounting sliding groove on the push-pull cylinder mounting seat. The lower mold base is provided with a positioning adjustment seat on one side of the cylinder mounting plate. The positioning adjustment seat is threaded with a positioning adjustment screw. The end of the positioning adjustment screw abuts against one end of the cylinder mounting plate. The lower mold base is provided with a displacement drive cylinder on the other side of the cylinder mounting plate. The drive rod of the displacement drive cylinder is connected to the other end of the cylinder mounting plate.

[0010] As a preferred embodiment, in the stamping forming device for an automotive chassis anti-collision beam, the sliding limiting mechanism includes: at least two adjusting threaded holes opened in the lateral limiting block along the length direction, and a limiting screw passing through the adjusting threaded holes and abutting against the sliding block.

[0011] As a preferred embodiment, in the stamping forming apparatus for an automotive chassis anti-collision beam, the lower die frame includes: a lower die mounting base plate, and a pair of lower pads disposed between the lower die base and the lower die mounting base plate.

[0012] As a preferred embodiment, in the stamping and forming apparatus for an automotive chassis anti-collision beam, the lower die base is further provided with a workpiece sensing device for sensing whether the workpiece is in position.

[0013] As a preferred embodiment, in the stamping forming apparatus for an automotive chassis anti-collision beam, the workpiece sensing device includes: a sensing transmission rod; both the mandrel guide support and the mandrel guide seat have sensing mounting holes that cooperate with the sensing transmission rod; the sensing transmission rod movably passes through the sensing mounting holes in the mandrel guide support and the mandrel guide seat; a sensing mounting support is also provided on the lower die seat outside the mandrel guide support; a metal sensing rod passes through the sensing mounting support facing the sensing transmission rod; a sensing transmission block is provided at the end of the sensing transmission rod near the sensing mounting support, and sensing elastic component mounting rods parallel to the sensing transmission rod are symmetrically arranged on the outer surface of the sensing transmission block; sensing elastic components are provided on the sensing elastic component mounting rods, and the two ends of the sensing elastic components abut against the sensing transmission block and the sensing mounting support, respectively.

[0014] The beneficial effects of this invention are as follows: The stamping forming apparatus of this invention can form the bosses on both sides of the anti-collision beam of the automobile chassis in one step, shortening the processing time, improving production efficiency and forming quality, and greatly improving the product yield. Furthermore, by setting a workpiece positioning groove in the workpiece placement area of ​​the support block to adjust the workpiece positioning accuracy, the forming accuracy is further improved. In addition, by setting an elastic punch component between the punch and the upper stripper plate, the punch's advance and retreat are made smoother. By setting a pusher at the tail of the punch, the contact area between the inclined pressure block and the punch is increased, making the punch's advance and retreat more stable, further improving the forming quality. Moreover, by setting an inclined plug pusher and shifting mechanism, the labor intensity of the operator is greatly reduced, and labor costs are reduced. By setting a workpiece sensing device, the automation level of the stamping forming apparatus is improved, and the labor intensity of the operator is greatly reduced. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural schematic diagram of the stamping forming device described in this invention.

[0016] Figure 2 yes Figure 1 A partial structural diagram on the left side.

[0017] Figure 3 This is an enlarged structural diagram of the punch.

[0018] Figure 4 yes Figure 1 A structural diagram from the main viewpoint.

[0019] Figure 5 yes Figure 1 A top-down structural diagram.

[0020] Figure 6This is a cross-sectional structural diagram of the upper detachment plate.

[0021] Figure 7 This is a top view of the support plate.

[0022] Figure 8 yes Figure 7 A schematic diagram of the left-side view structure.

[0023] Figure 9 yes Figure 7 A schematic diagram of the structure viewed from below.

[0024] Figure 10 This is a schematic diagram of the sliding block.

[0025] Figure 11 yes Figure 10 A schematic diagram of the structure viewed from the right.

[0026] Figure 12 yes Figure 5 A magnified schematic diagram of the central part of the structure.

[0027] Figure 13 This is a schematic diagram of the clamping block.

[0028] Figure 14 yes Figure 13 A schematic diagram of the left-side view structure.

[0029] Figure 15 A partial three-dimensional structural schematic diagram of the stamping forming device of the present invention.

[0030] Figure 16 yes Figure 15 A magnified structural diagram of part A in the middle.

[0031] Figure 17 This is a three-dimensional structural diagram of the built-in component of the workpiece in this invention.

[0032] Figures 1 to 17The reference numerals in the attached drawings are as follows: 1. Workpiece; 2. First built-in forming mandrel; 201. Mandrel guide block; 203. Stamping recess; 3. Second built-in forming mandrel; 303. Stamping recess; 4. Inclined plug block; 401. First inclined surface; 402. Second inclined surface; 403. Third inclined surface; 404. Fourth inclined surface; 405. Fifth inclined surface; 5. Built-in base plate; 6. Upper mold base; 61. In-mold elastic component; 7. Upper clamping plate; 8. Inclined pressure block; 9. Upper ejector plate; 91. Guide inclined surface; 92. Punch mounting step; 92. 1. Stamping guide hole; 93. Pushing boss; 930. Mounting groove; 931. Pushing ramp; 10. Punch; 100. Pushing part; 101. Columnar protrusion; 102. Punch elastic component; 13. Guide post; 15. Lateral limiting block; 16. Support block; 161. Workpiece positioning groove; 162. Pushing through hole; 163. Clamping guide groove; 17. Clamping block; 171. Spring mounting hole; 172. Guide boss; 173. Clearance notch; 18. Sliding block; 181. Spring mounting hole; 182. Guide protrusion Platform, 183. Guide ramp, 19. Pushing elastic component, 20. Limit screw, 21. Tensioning elastic component, 22. Connecting seat, 23. Connecting plate, 24. Caster wheel, 25. Pushing cylinder, 27. Pushing cylinder mounting seat, 28. Support plate, 29. Cylinder mounting plate, 30. Shifting drive cylinder, 31. Shifting drive cylinder mounting bracket, 33. Positioning adjustment seat, 331. Positioning adjustment screw, 34. Lower mold base, 35. Lower pad block, 36. Lower mold mounting base plate, 37. First workpiece pushing device, 38. The first workpiece pushing device, Two-workpiece jacking device, 39. Metal sensing rod, 390. Sensing mounting support, 391. Transmission guide block, 392. Sensing transmission block, 393. Sensing transmission rod, 394. Sensing elastic component mounting rod, 395. Sensing elastic component, 40. Base plate guide rail, 41. Guide connecting block, 42. Base plate guide block, 43. Base plate elastic component, 44. Base plate elastic component mounting seat, 46. Mandrel guide seat, 461. Mandrel guide groove, 462. Cover plate, 463. Elastic connecting component, 47. Mandrel guide support. Detailed Implementation

[0033] The following describes in detail, with reference to the accompanying drawings, a specific embodiment of the stamping forming device for an automotive chassis anti-collision beam according to the present invention:

[0034] like Figure 1 , Figure 2 , Figures 4 to 6As shown, the stamping forming device for an automobile chassis anti-collision beam of the present invention includes: an upper die and a lower die. The workpiece 1 of the automobile chassis anti-collision beam is a square tube. The upper die includes: an upper die base 6, an upper clamping plate 7, and an upper ejector plate 9. The upper clamping plate 7 is disposed on the bottom surface of the upper die base 6 (which is conventional technology in the art and will not be described in detail here). The four corners of the upper clamping plate 7 are respectively provided with vertically downward arranged guide posts 13. The upper ejector plate 9 is located below the upper clamping plate 7. The upper ejector plate 9 has guide holes that correspond one-to-one with all the guide posts 13. The upper ejector plate 9 should be movably inserted into the guide hole of the upper ejector plate 9. Several in-mold elastic components 61 (usually composed of rectangular elastic bodies, a common technique in the field, and will not be described further here) are distributed between the upper ejector plate 9 and the upper clamping plate 7. The upper ejector plate 9 has a pair of inwardly inclined guide slopes 91 symmetrically arranged on both sides of the workpiece 1, and a punch mounting step 92 connecting to the inner end of the guide slopes 91. A pair of punching guide holes 921 are provided on the punch mounting step 92, arranged obliquely along the guide slopes 91. A punch is placed on the guide slope 91 of the upper ejector plate 9. The head 10, the end of the punch 10 is movably inserted into the corresponding punching guide hole 921; the upper die base 6 is symmetrically provided with a pair of inclined pressure blocks 8 on both sides, which respectively cooperate with the punch 10 on the corresponding side. The specific arrangement of the inclined pressure blocks 8 is as follows: the upper clamping plate 7 has inclined pressure block mounting through holes that cooperate with the upper part of the inclined pressure blocks 8, and the upper part of the inclined pressure blocks 8 is inserted into the corresponding inclined pressure block mounting through holes on the upper clamping plate 7 and connected to the upper die base 6 (this is a conventional technique in the art and will not be described in detail here); the bottom surface of the upper ejector plate 9 is mounted on the workpiece through the mounting groove 930. 1. Pushing bosses 93 are provided on both sides (this is a common technique in the art and will not be described in detail here). Pushing ramps 931 are provided on both sides of the pushing bosses 93 near their bottom ends. The lower mold includes: a lower mold mounting base plate 36, a pair of lower pads 35 provided on both sides of the lower mold mounting base plate 36, and a lower mold base 34 provided on the pair of lower pads 35. Lateral limiting blocks 15 are provided on both sides of the lower mold base 34. A support block 16 is provided on the lower mold base 34 between the pair of lateral limiting blocks 15. A workpiece placement area is provided in the center of the support block 16, such as... Figure 7 , Figure 8 and Figure 9 As shown, the support block 16 has a workpiece positioning groove 161 in the workpiece placement area. On both sides of the workpiece placement area, the support block 16 has a clamping block 17 and a sliding block 18, which can slide along a direction perpendicular to the insertion direction of the workpiece 1, arranged sequentially from the inside out. Figures 7 to 11 , Figure 13 and Figure 14As shown, the specific installation method of the clamping block 17 and the sliding block 18 is as follows: A pair of clamping guide grooves 163 perpendicularly communicating with the workpiece positioning groove 161 are respectively opened on both sides of the support block 16. The clamping guide grooves 163 have a larger bottom and a smaller opening. The bottom of the clamping block 17 is provided with a guide boss 172 that cooperates with the clamping guide grooves 163 on the support block 16. The bottom of the sliding block 18 is provided with a guide boss 182 that cooperates with the clamping guide grooves 163 on the support block 16. The guide bosses 172 of the clamping block 17 and the guide bosses 182 of the sliding block 18 are slidably arranged on the corresponding side of the clamping guide grooves 163. 3. The clamping block 17 is provided with a clearance notch 173 corresponding to the punch 10. Multiple pushing elastic components 19 are provided between the clamping block 17 and the sliding block 18. Specifically, multiple pairs of one-to-one corresponding spring mounting holes 171 and 181 are opened on the adjacent sides of the clamping block 17 and the sliding block 18. Each pair of spring mounting holes 171 and 181 is provided with a spring as a pushing elastic component 19 (this is conventional technology in the art and will not be described in detail here). A sliding limiting mechanism is provided between the lateral limiting block 15 and the sliding block 18 on the same side. The sliding limiting mechanism includes two adjusting threaded holes opened in the lateral limiting block 15 along the length direction. The limiting screw 20 is selected, passes through the adjusting threaded hole, and rests against the sliding block 18; multiple springs (common technology in the art, not described in detail here) are respectively provided between the two ends of the sliding block 18 and the corresponding ends of the lateral limiting block 15 as tensioning elastic components 21. On the side of the sliding block 18 away from the workpiece, near the top of the sliding block 18, a guide ramp 183 is provided to cooperate with the push ramp 931 on the corresponding side of the push boss 93. The support block 16 is provided with an inner base plate 5 that cooperates with the workpiece 1 in the workpiece placement area. The inner base plate 5 is provided with a vertically downward base plate guide block 42 at its inner end. A guide connecting block 4 is provided on the base plate guide block 42. 1. The lower mold base 34 is provided with a base plate guide rail 40 that cooperates with the guide connecting block 41. The guide connecting block 41 has a base plate guide groove that cooperates with the base plate guide rail 40. The guide connecting block 41 is slidably mounted on the base plate guide rail 40 through the base plate guide groove. The lower mold base 34 is also provided with a base plate elastic component mounting seat 44 that cooperates with the base plate guide block 42. A base plate elastic component 43 (which is conventional technology in the art and will not be described in detail here) is provided between the base plate elastic component mounting seat 44 and the base plate guide block 42. The support block 16 is symmetrically provided with a first built-in molding core 2 and a second built-in molding core 3 on both sides above the built-in base plate 5, such as Figure 17As shown, along the insertion direction of workpiece 1, the upper surface of the built-in base plate 5 is an inclined surface sloping from the far end to the near end. The first built-in forming mandrel 2 is provided with a stamping recess 203 corresponding to the stamping guide hole 921 on the corresponding side of the upper ejector plate 9. The second built-in forming mandrel 3 is provided with a stamping recess 303 corresponding to the stamping guide hole 921 on the corresponding side of the upper ejector plate 9. Along the insertion direction of workpiece 1, the bottom surface and inner side surface of the first built-in forming mandrel 2 and the second built-in forming mandrel 3 are inclined surfaces sloping from the far end to the near end. The installation method of the first built-in forming mandrel 2 and the second built-in forming mandrel 3 is the same. Taking the first built-in forming mandrel 2 as an example... Figures 15 to 17 As shown, a mandrel guide block 201 is provided at the inner end of the first built-in molding mandrel 2. A mandrel guide seat 46 is provided on the lower mold base 34 via a mandrel guide support 47. That is, the lower mold base 34 is provided with a mandrel guide support 47, and the mandrel guide seat 46 is provided on the mandrel guide support 47. The mandrel guide seat 46 has symmetrically opened mandrel guide grooves 461 corresponding to the corresponding mandrel guide blocks 201. The mandrel guide grooves 461 on both sides are arranged in a "V" shape. The mandrel guide blocks 201 are slidably disposed in the corresponding mandrel guide grooves 461. The mandrel guide seat 46 has a cover plate 462 above the mandrel guide grooves 461 on both sides. An elastic connecting member 463 is provided between the cover plate 462 and the mandrel guide block 201. The built-in base plate 5 and the first built-in molding mandrel 201 are connected by a mandrel guide block 201. A T-shaped inclined plug 4 is inserted between the core rod 2 and the second built-in molded core rod 3. Along the insertion direction of the workpiece 1, the inclined plug 4 has five inclined surfaces that correspond one-to-one with the upper surface of the built-in base plate 5, the bottom surface and inner side surface of the first built-in molded core rod 2, and the bottom surface and inner side surface of the second built-in molded core rod 3, sloping from the near end to the far end. Specifically: the first inclined surface 401 on the inclined plug 4 corresponds to the inner side surface of the first built-in molded core rod 2; the second inclined surface 402 on the inclined plug 4 corresponds to the inner side surface of the second built-in molded core rod 3; the third inclined surface 403 on the inclined plug 4 corresponds to the bottom surface of the first built-in molded core rod 2; the fourth inclined surface 404 on the inclined plug 4 corresponds to the bottom surface of the second built-in molded core rod 3; and the fifth inclined surface 405 on the inclined plug 4 corresponds to the upper surface of the built-in base plate 5. In this embodiment, as shown... Figure 3As shown, the tail of the punch 10 is provided with a columnar protrusion 101 parallel to the direction of movement of the punch 10. A punch elastic component 102 (usually a spring, which is a common technique in the art and will not be described in detail here) is sleeved on the columnar protrusion 101. The two ends of the punch elastic component 102 press against the tail of the punch 10 and the punch mounting step 92 of the upper ejector plate 9, respectively. A pair of punches 10 on the same side are each provided with a pushing part 100 extending vertically outward at their tails. The lower die mounting base plate 36 is also provided with a first workpiece pushing device 37 and a second workpiece pushing device 38 (usually a cylinder or hydraulic cylinder). (Or linear drive devices such as electric cylinders, which are conventional technologies in this field and will not be described in detail here). The support block 16 is provided with push-through holes 162 corresponding to the drive rods of the first workpiece push device 37 and the second workpiece push device 38. The lower mold base 34 is also provided with corresponding push-through holes. The drive rods of the first workpiece push device 37 and the second workpiece push device 38 are respectively movably inserted into the corresponding push-through holes on the lower mold base 34 and the corresponding push-through holes 162 on the support block 16. The lower mold base 34 is also provided with a slant block push-pull displacement mechanism that cooperates with the slant block 4. The inclined block pushing and shifting mechanism includes: a pushing cylinder mounting base 27 with multiple support plates 28, and a pushing cylinder 25 slidably mounted on the pushing cylinder mounting base 27 via a cylinder mounting plate 29. A connecting seat 22 connected to the inclined block 4 is provided on the drive rod of the pushing cylinder 25. A universal ball bearing serving as a universal wheel 24 is provided on the bottom surface of the connecting seat 22 via a connecting plate 23. The pushing cylinder mounting base 27 has a mounting sliding groove with a larger bottom and a smaller opening. The cylinder mounting plate 29 has a shifting sliding boss that mates with the mounting sliding groove on the pushing cylinder mounting base 27 (this is conventional technology in the art). (Details omitted here) The shifting sliding boss is set in the mounting sliding groove on the push-pull cylinder mounting base 27. A positioning adjustment seat 33 is provided on one side of the cylinder mounting plate 29 on the lower mold base 34. A threaded adjustment hole is provided in the positioning adjustment seat 33, and a positioning adjustment screw 331 is provided in the threaded adjustment hole. The end of the positioning adjustment screw 331 abuts against one end of the cylinder mounting plate 29. A shifting drive cylinder 30 is provided on the other side of the cylinder mounting plate 29 on the lower mold base 34 via a shifting drive cylinder mounting bracket 31. The drive rod of the shifting drive cylinder 30 is connected to the other end of the cylinder mounting plate 29. The lower mold base 34 is also provided with a workpiece sensing device for sensing whether the workpiece 1 is in position, such as... Figure 12As shown, the workpiece sensing device includes: a sensing transmission rod 393; both the mandrel guide support and the mandrel guide seat 46 have sensing mounting holes that cooperate with the sensing transmission rod 393; the sensing transmission rod 393 passes through the sensing mounting holes in the mandrel guide support 47 and the mandrel guide seat 46 sequentially from the outside to the inside; the lower mold base 34 also has a sensing mounting support 390 on the outside of the mandrel guide support 47; a metal sensing rod 39 passes through the sensing mounting support 390 facing the sensing transmission rod 393; the sensing transmission rod 393 is located near the sensing mounting... A sensing transmission block 392 is provided at one end of the support 390, i.e., the outer end. Specifically, a transmission guide block 391 is sleeved on the sensing transmission rod 393. The sensing transmission block 392 is fixed to the transmission guide block 391 by a pair of parallel screws that serve as sensing elastic component mounting rods 394 (this is conventional technology in the art and will not be described in detail here). A sensing elastic component 395 is sleeved on the sensing elastic component mounting rods 394. The two ends of the sensing elastic component 395 abut against the sensing transmission block 392 and the sensing mounting support 390, respectively.

[0035] In practical applications, the lower mold base 34 is also equipped with a position sensor for sensing whether the inclined plug block 4 has retracted into place (this is a common technology in the field and will not be described in detail here); the upper mold base 6 is installed on the corresponding machine tool.

[0036] In actual use, the built-in base plate 5, the first built-in molding core rod 2, and the second built-in molding core rod 3 are first placed in the workpiece 1, and the workpiece 1 is pushed into place. During this process, the workpiece 1 pushes the induction transmission rod 393 outward, so that the induction transmission block 392 contacts the metal induction rod 39. At this time, the inclined plug 4 can be inserted between the built-in base plate 5, the first built-in molding core rod 2, and the second built-in molding core rod 3. The five inclined surfaces on the inclined plug 4 are in contact with the built-in base plate 5, the first built-in molding core rod 2, and the second built-in molding core rod 3. The corresponding surfaces cooperate to ensure that the built-in base plate 5, the first built-in forming core rod 2, and the second built-in forming core rod 3 are tightly attached to the inner wall of the workpiece 1. After the workpiece 1 is installed, the upper mold base 6 moves downward. During the downward movement of the upper mold base 6, the inclined pressure block 8 pushes the punch 10 to punch the workpiece 1. At the same time, the push boss 93 on the upper ejector plate 9 pushes the sliding block 18 inward during the downward movement. The sliding block 18 then pushes the clamping block 17 inward through the push elastic component 19, so that the workpiece 1 is clamped by the clamping block 17 during the punching. After stamping is completed, the upper die holder 6 moves upward, and the sliding block 18 returns to its original position under the combined action of the tensioning elastic component 21 and the limiting screw 20. The punch 10 returns to its original position under the action of the punch elastic component 102. The push-pull cylinder 25 pulls out the inclined block 4. When the inclined block 4 retracts to its original position, the shift drive cylinder 30 moves the push-pull cylinder 25 and the inclined block 4 to one side at the same time to make room for the stamped workpiece 1 to be taken out. Of course, before taking out the workpiece 1, the first workpiece pushing device 37 and the second workpiece pushing device 38 can be used to push the workpiece 1 to facilitate its removal.

[0037] In summary, these are merely preferred embodiments of the present invention and are not intended to limit the scope of the invention. All equivalent variations and modifications made to the shape, structure, features, and spirit described in the claims of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A stamping forming apparatus for an automotive chassis anti-collision beam, comprising: The upper and lower dies are provided. The workpiece of the automobile chassis anti-collision beam is a square tube. The upper die comprises an upper die base, an upper clamping plate, and an upper ejector plate. The upper clamping plate is disposed on the bottom surface of the upper die base and has at least two parallel, vertically downward guide pillars. The upper ejector plate is located below the upper clamping plate and has guide holes corresponding to all the guide pillars. The guide pillars are movably inserted into the guide holes of the upper ejector plate. A plurality of in-die elastic components are distributed between the upper ejector plate and the upper clamping plate. The upper ejector plate has a pair of inwardly inclined guide ramps symmetrically arranged on both sides of the workpiece, and a punch mounting step connecting to the inner end of the guide ramps. The mounting step has at least one stamping guide hole arranged obliquely along the guide slope. A punch is placed on the guide slope of the upper ejector plate, and the end of the punch is movably inserted into the corresponding stamping guide hole. A pair of inclined pressure blocks are symmetrically arranged on both sides of the upper die base, which respectively cooperate with the punch on the corresponding side. The specific arrangement is as follows: the upper clamping plate has inclined pressure block mounting through holes that cooperate with the upper part of the inclined pressure blocks. The upper part of the inclined pressure blocks passes through the corresponding inclined pressure block mounting through holes on the upper clamping plate and is connected to the upper die base. The bottom surface of the upper ejector plate has push bosses on both sides of the workpiece. The side of the push boss near the workpiece has a push ramp near the bottom end of the push boss.The lower die includes: a lower die frame, a lower die base on the lower die frame, lateral limiting blocks on both sides of the lower die base, a support block on the lower die base between the lateral limiting blocks, a workpiece placement area on the support block, and clamping blocks and sliding blocks arranged sequentially from the inside to the outside on both sides of the workpiece placement area on the support block, which can slide along a direction perpendicular to the insertion direction of the workpiece. The clamping blocks have clearance notches corresponding to the punch, and a pushing elastic component is provided between the clamping blocks and the sliding blocks. A sliding limiting mechanism is provided between the lateral limiting blocks and the sliding blocks on the same side. Tensioning elastic components are respectively provided between the two ends of the moving block and the corresponding ends of the lateral limiting block. A guide ramp is provided on the side of the sliding block away from the workpiece, near the top of the sliding block, to cooperate with the pushing ramp on the pushing boss. The support block has an internal base plate that cooperates with the workpiece in the workpiece placement area. Along the insertion direction of the workpiece, the internal base plate has a vertically downward base plate guide block at its far end (inner end). The lower mold base has a base plate guide rail that cooperates with the base plate guide block, and the base plate guide block has a base plate guide that cooperates with the base plate guide rail. The bottom plate guide block is slidably mounted on the bottom plate guide rail via the bottom plate guide groove. An elastic component is provided between the bottom plate guide block and the lower mold base. The upper surface of the inner bottom plate is an inclined surface sloping from the inner end to the outer end. A pair of inner forming mandrels are symmetrically arranged on both sides above the inner bottom plate on the support block. The inner forming mandrels have stamping recesses that correspond one-to-one with the stamping guide holes on the upper ejector plate. Along the insertion direction of the workpiece, the bottom surface and inner side surface of the inner forming mandrel are inclined surfaces sloping from the far end to the near end. The inner end of the inner forming mandrel is... A mandrel guide block is provided. A mandrel guide seat is provided on the lower mold base via a mandrel guide support. Symmetrical mandrel guide grooves corresponding to the corresponding mandrel guide blocks are formed in the mandrel guide seats. The mandrel guide blocks are slidably disposed in the corresponding mandrel guide grooves. An inverted "T"-shaped inclined plug is inserted between the inner base plate and the two inner molded mandrels. Along the insertion direction of the workpiece, the inclined plug has five inclined surfaces that correspond one-to-one with the upper surface of the inner base plate and the bottom and inner side surfaces of the pair of inner molded mandrels, sloping from the near end to the far end.

2. The stamping forming device for an automobile chassis anti-collision beam according to claim 1, characterized in that, The support block is provided with a workpiece positioning groove in the workpiece placement area. The specific installation method of the clamping block and the sliding block is as follows: at least one clamping guide groove is provided on each of the two sides of the support block, which is perpendicular to the workpiece positioning groove. The clamping guide groove has a larger bottom and a smaller opening. The bottom of the clamping block and the sliding block are provided with guide bosses that cooperate with the clamping guide grooves on the support block. The guide bosses on the clamping block and the sliding block are slidably disposed in the clamping guide grooves on the corresponding side.

3. The stamping forming device for an automobile chassis anti-collision beam according to claim 1, characterized in that, The tail of the punch is provided with a columnar protrusion parallel to its direction of movement. A punch elastic component is sleeved on the columnar protrusion. The two ends of the punch elastic component press against the tail of the punch and the punch mounting step of the upper release plate, respectively.

4. The stamping forming device for an automobile chassis anti-collision beam according to claim 1, characterized in that, The upper stripper plate has two pairs of stamping guide holes symmetrically arranged on both sides of the workpiece, and each of the two punches on the same side has a pushing part that extends vertically outward at its tail.

5. The stamping forming device for an automobile chassis anti-collision beam according to claim 1, characterized in that, The lower mold frame is also provided with at least one workpiece pushing device, and the drive rod of the workpiece pushing device is movably inserted into the lower mold base and the support block.

6. The stamping forming apparatus for an automobile chassis anti-collision beam according to claim 1, characterized in that, The lower die base is also provided with a slant block pushing and shifting mechanism that cooperates with the slant block. The slant block pushing and shifting mechanism includes: a pushing cylinder mounting base and a pushing cylinder mounted on the pushing cylinder mounting base via a cylinder mounting plate. The driving rod of the pushing cylinder is provided with a connecting seat connected to the slant block, and a caster wheel is provided on the bottom surface of the connecting seat. The pushing cylinder mounting base has a mounting sliding groove with a larger bottom and a smaller opening. The cylinder mounting plate is provided with a shifting sliding boss that cooperates with the mounting sliding groove. The shifting sliding boss is located in the mounting sliding groove on the pushing cylinder mounting base. The lower die base has a positioning adjustment seat on one side of the cylinder mounting plate. A positioning adjustment screw is threaded into the positioning adjustment seat. The end of the positioning adjustment screw abuts against one end of the cylinder mounting plate. The lower die base has a shifting drive cylinder on the other side of the cylinder mounting plate. The driving rod of the shifting drive cylinder is connected to the other end of the cylinder mounting plate.

7. The stamping forming apparatus for an automobile chassis anti-collision beam according to claim 1, characterized in that, The sliding limiting mechanism includes at least two adjusting threaded holes opened in the lateral limiting block along the length direction, and a limiting screw passing through the adjusting threaded holes and abutting against the sliding block.

8. The stamping forming apparatus for an automobile chassis anti-collision beam according to claim 1, characterized in that, The lower mold frame includes: a lower mold mounting base plate and a pair of lower pads disposed between the lower mold base and the lower mold mounting base plate.

9. A stamping forming apparatus for an automobile chassis anti-collision beam according to any one of claims 1 to 8, characterized in that, The lower mold base is also equipped with a workpiece sensing device for sensing whether the workpiece is in position.

10. The stamping forming apparatus for an automobile chassis anti-collision beam according to claim 9, characterized in that, The workpiece sensing device includes: a sensing transmission rod; both the mandrel guide support and the mandrel guide seat have sensing mounting holes that cooperate with the sensing transmission rod; the sensing transmission rod is movably inserted through the sensing mounting holes in the mandrel guide support and the mandrel guide seat; the lower mold base also has a sensing mounting support on the outside of the mandrel guide support; a metal sensing rod is inserted through the sensing mounting support facing the sensing transmission rod; a sensing transmission block is provided at the end of the sensing transmission rod near the sensing mounting support, and sensing elastic component mounting rods parallel to the sensing transmission rod are symmetrically arranged on the outer surface of the sensing transmission block; sensing elastic components are provided on the sensing elastic component mounting rods, and the two ends of the sensing elastic components abut against the sensing transmission block and the sensing mounting support, respectively.

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