CN117772903B - Trimming and punching composite die carrier - Google Patents

Abstract

The application relates to a trimming and punching composite die frame, and belongs to the technical field of composite dies. The hot forging die comprises a press workbench, a lower die assembly and an upper die assembly, wherein the lower die assembly is arranged on the press workbench and used for placing a hot forging, the upper die assembly is used for stamping and arranged above the lower die assembly, the lower die assembly comprises a lower female die for positioning and placing a hot forging, the upper die assembly comprises a trimming die for stamping the hot forging, and the trimming die comprises a trimming ring sleeve used for stamping a first trimming material and a trimming punch head arranged in the trimming ring sleeve and used for stamping a second trimming material. The application has the effect of improving the processing efficiency and the discharging efficiency of the hot forging.

Description

Trimming and punching composite die carrier

Technical Field

The application relates to the technical field of composite dies, in particular to a trimming and punching composite die carrier.

Background

The hot forging is also called hot forging, and is a press working method in which a metal blank is heated to a certain temperature and then is subjected to plastic deformation by a tool or a die, so that a workpiece with a certain shape, size and internal structure is obtained.

Referring to fig. 1, a hot forging 4 of an automotive steel piston is shown, and fig. 2 is a structural view of the hot forging 4 after being processed. The hot forging 4 includes a piston body 41, and an outer side wall of the piston body 41 has a first blanking 42 to be cut, and the first blanking 42 is annular. The top of the piston body 41 is provided with a piston slot 411, and the bottom wall of the piston slot 411 is provided with a second blanking 43 for cutting, and the second blanking 43 is plate-shaped.

At present, when the hot forging 4 is processed, the first blanking 42 and the second blanking 43 need to be respectively processed on two devices, so that the processing efficiency of the product is low.

Disclosure of Invention

In order to improve the processing efficiency of hot forgings in the background technology, the application provides a trimming and punching composite die carrier.

The application provides a trimming and punching composite die carrier, which adopts the following technical scheme:

The utility model provides a side cut compound die carrier that punches a hole, includes the press workstation, set up in be used for placing the lower mould subassembly of hot forging on the press workstation and set up in the last mould subassembly that lower mould subassembly top is used for the punching press, lower die that lower mould subassembly was placed including the heat supply forging location, go up the mould subassembly including the side cut mould that is used for punching press hot forging, the side cut mould including be used for punching press first blank cut ring cover with set up in be used for punching press second blank cut punch in the side cut ring cover.

By adopting the technical scheme, when the stamping blanking of the hot forging is carried out, the upper die assembly is downwards moved, so that the trimming ring sleeve arranged on the upper die assembly is matched with the hot forging sleeve, and the trimming ring sleeve and the blanking punch are corresponding to the top surface of the first blanking, and the trimming ring sleeve and the blanking punch can cut the first blanking and the second blanking from the hot forging under the larger impact force of the upper die assembly.

Optionally, the lower die assembly further comprises a first discharging assembly for discharging the first cutting material and a second discharging assembly for discharging the second cutting material; the first discharging assembly comprises a lifting plate, a first driving piece and a flash sliding rail, the lifting plate is arranged on the outer side of the lower female die in a lifting mode and used for arranging first cut materials after cutting, the first driving piece drives the lifting plate to lift, and the flash sliding rail is obliquely arranged on one side of the lower female die;

The second discharging assembly comprises a second driving piece arranged on the press platform, a pushing block connected with an output shaft of the second driving piece and used for pushing second blanking, and a guide plate arranged on one side of the press platform away from the second driving piece, wherein the lower die assembly is provided with a pushing channel for sliding the pushing block, and the pushing channel is communicated with a piston groove of the hot forging.

Through adopting above-mentioned technical scheme, first material subassembly and second material subassembly of arranging can be convenient for respectively to first blank and second blank row material in product production and processing. When the first cutting material is cut off, the first cutting material component falls on the lifting plate, firstly, a product is moved out of the lower female die through the first mechanical arm, then the lifting plate is lifted upwards by starting the first driving piece, the first cutting material is grabbed by the second mechanical arm and moves to the position above the flash slide rail, the grabbing of the second mechanical arm is released, and the first cutting material falls on the flash slide rail to automatically slide;

When the second cutting material is cut off, the second driving piece is started, so that the pushing block horizontally slides in the pushing channel, the pushing block pushes the second cutting material falling into the pushing channel to the material guiding plate, and the second cutting material automatically slides down along the material guiding plate. The first discharging component and the second discharging component improve the processing efficiency of the cutting material and further improve the processing efficiency of the product.

Optionally, the lifter plate top has the first bulge loop that supplies first material to arrange, first driving piece symmetry arrange in the second lifter plate both sides, just the output shaft of first driving piece with lifter plate bottom has the lift clearance.

Through adopting above-mentioned technical scheme, first tangential material falls on first bulge loop after cutting, has certain clearance between first tangential material and the lifter plate top surface, through first driving piece with lifter plate lifting for the height of die under first tangential material is higher than, and the manipulator level stretches out and snatchs first tangential material this moment. The lifting plate is lifted by the first driving piece, so that the manipulator can horizontally extend into the inner ring of the first cutting material, the grabbing range is enlarged, and the grabbing stability of the first cutting material is improved; the setting of lift clearance makes between first driving piece and the lifter plate contactless, compares in hard connection, can reduce two first driving pieces and start and lead to the lifter plate to appear the probability of deflection in step.

Optionally, the lower die assembly has the support plate of support the lifter plate and is used for the direction subassembly that the lifter plate goes up and down, the backup pad include support backing plate and set up in support backing plate top and confession lower die fixed mounting's lower die mounting panel.

Through adopting above-mentioned technical scheme, the backup pad plays location supporting effect and supplies the installation of direction subassembly to the lifter plate, and direction subassembly carries out the guide effect to the lift of lifter plate for the lift of lifter plate is stable, and the accuracy is higher.

Optionally, the direction subassembly including slide install in the push pedal guide arm of backup pad, cover locate the lubrication copper sheathing of push pedal guide arm and be used for connecting the push pedal guide arm with the lock bolt of lifter plate, the backup pad has and runs through both sides terminal surface and supplies the guide hole that the push pedal guide arm slides and arranges.

Through adopting above-mentioned technical scheme, specifically disclose guide assembly's composition structure, lifter plate and push pedal guide arm pass through locking bolt fixed connection, and after the lifter plate was gone up and down to first driving piece drive lifter plate, the lifter plate was along the lifting of direction of height, drove the push pedal guide arm simultaneously and remove at the guiding hole axial, and lubricated copper sheathing can play lubricated effect to the slip of push pedal guide arm, improves the smooth and easy nature of sliding of push pedal guide arm.

Optionally, the lower die mounting plate is in the guiding hole has the confession the mounting groove that the lubricated copper sheathing arranged, the lubricated copper sheathing is provided with the restriction the spacing ring of push pedal guide arm, the tip of push pedal guide arm is provided with spacing butt spacing ring's butt portion.

Through adopting above-mentioned technical scheme, the butt cooperation of spacing ring and butt portion can play limiting displacement to the lifting height of lifter plate, has reduced the probability that follow the backup pad was broken away from after the lifter plate lifting.

Optionally, the upper die assembly further comprises an upper die mounting plate, an upper die mounting plate for mounting the trimming die and the blanking punch, and a pressing assembly for pressing the hot forging.

Through adopting above-mentioned technical scheme, after last mould subassembly and lower mould subassembly compound die, when going up mould subassembly and upwards moving the reset, compress tightly the subassembly and have the trend of pressing the product under the die all the time, reduce the probability that goes up mould subassembly and take the product out the lower die.

Optionally, the compression assembly includes along a plurality of deformation pieces of blank drift circumference interval arrangement, connect the compression pole of deformation piece, supply a plurality of compression mount pad that the compression pole was installed and be used for compressing tightly the pressure strip on hot forging, when last die assembly and lower die assembly accomplish the compound die and reset, the compression assembly has the trend of compressing tightly hot forging all the time the lower die.

Through adopting above-mentioned technical scheme, specifically disclose the composition structure of compressing tightly the subassembly, after last mould subassembly closes the mould pressing on hot forging, the pressure strip presses on hot forging, and the deformation piece is in compressed state, when last mould subassembly moves up and resets, the deformation piece gradually switches from compressed state to normal tensile state, when trimming die and blank drift break away from with hot forging, compresses tightly the subassembly and has the pressure of order about hot forging to compress tightly on lower die, has guaranteed discharge efficiency.

Optionally, the compression piece is nitrogen spring, nitrogen spring fixed mounting in go up the mould mounting panel, the both ends of compressing tightly the pole are connected respectively the output shaft of nitrogen spring and the top surface of compressing tightly the mount pad, compress tightly the mount pad with go up mould mounting panel fixed mounting, compress tightly the mount pad with go up and have the confession between the mould mounting panel the clearance that the pole slided.

By adopting the technical scheme, the compression piece is specifically disclosed, when the upper die assembly and the lower die assembly are assembled, the compression plate is pressed on the hot forging, the compression mounting seat is positioned at the top of the sliding gap, and the nitrogen spring is in a compressed state; when the upper die assembly is reset upwards, the trimming die and the blanking punch are gradually separated from the hot forging, the nitrogen spring is gradually switched from the compression state to the stretching state, in the separation process, the compacting plate mounting plate moves towards the bottom of the sliding gap, and the compacting plate is always compacted on a product until the nitrogen spring is stretched to a normal state.

Optionally, the inboard anti-rotation key that is provided with the butt of last mould mounting panel compresses tightly the mount pad, it is provided with the anti-rotation bolt of connecting the anti-rotation key to go up the mould mounting panel, compress tightly the mount pad outer wall have with anti-rotation plane that anti-rotation key corresponds.

Through adopting above-mentioned technical scheme, prevent the setting of change key for can play the fixed effect of compressing tightly to compressing tightly the radial direction of mount pad, reduce and compress tightly the mount pad and appear rotating probability, guarantee that the pressure strip can with hot forging adaptation.

In summary, the present application includes at least one of the following beneficial technical effects:

1. According to the application, through the arrangement of the first discharging assembly and the second discharging assembly, the discharging efficiency of the first blanking and the second blanking cut from the hot forging piece can be improved, and the production efficiency is improved;

2. The guide assembly is arranged, so that the lifting plate can be guided and limited, and the lifting stability of the lifting plate is ensured;

3. According to the application, through the arrangement of the pressing component, the effect of pressing the hot forging can be achieved when the upper die component moves upwards for resetting, and the probability that the hot forging is brought out of the lower die by the upper die component is reduced.

Drawings

Fig. 1 is a prior art green hot forging.

Fig. 2 is a piston body that has been stamped in the background art.

Fig. 3 is a schematic overall structure of an embodiment of the present application.

Fig. 4 is a schematic overall cross-sectional view of an embodiment of the present application.

Fig. 5 is a partially enlarged schematic view at a in fig. 3.

Fig. 6 is a schematic partial cross-sectional view of a guide assembly in an embodiment of the application.

FIG. 7 is a schematic cross-sectional view of a second discharge assembly in accordance with an embodiment of the application.

Fig. 8 is a schematic cross-sectional view of a compression assembly in accordance with an embodiment of the present application.

FIG. 9 is a schematic cross-sectional view of an anti-rotation key according to an embodiment of the present application.

Reference numerals illustrate: 1. a press table; 2. a lower die assembly; 21. a lower female die; 211. a step surface; 212. a communication hole; 22. a first discharge assembly; 221. a lifting plate; 2211. a first push plate; 22111. a first collar; 2212. a second push plate; 22121. an extension; 222. a first driving member; 223. a flash slide rail; 23. a second discharge assembly; 231. a second driving member; 232. a pushing block; 233. a material guide plate; 24. a lower die holder; 25. a support plate; 251. a support backing plate; 252. a lower die mounting plate; 2521. a copper sleeve groove; 2522. positioning ring grooves; 253. a guide hole; 26. a guide assembly; 261. a push plate guide rod; 2611. an abutment ring; 262. lubricating the copper sleeve; 2621. a limiting ring; 263. a connecting bolt; 27. a pushing channel; 28. a cylinder mounting plate; 281. a dust cover; 29. a strike post; 3. an upper die assembly; 31. cutting edge ring sleeves; 311. abutting the annular surface; 312. trimming the annulus; 32. cutting punch heads; 321. a punch holder; 322. punching a punch; 3221. a punch annulus; 3222. a relief groove; 33. an upper die holder; 34. an upper die mounting plate; 341. an upper die sleeve; 3411. a deformation chamber; 342. a punch mounting seat; 3421. a mounting chamber; 3422. a sliding through hole; 3423. an anti-rotation groove; 35. a compression assembly; 351. a pressing member; 352. a pressing rod; 3521. compressing the limiting ring; 353. compressing the mounting seat; 3531. an anti-rotation plane; 354. a compacting plate; 36. a bearing block; 37. a spring pressing plate; 38. an anti-rotation key; 381. an anti-rotation bolt; 4. a hot forging; 41. a piston body; 411. a piston groove; 42. a first blanking step; 43. a second blanking step; 431. and positioning the convex points.

Detailed Description

The application is described in further detail below with reference to fig. 3-9.

The embodiment of the application discloses a trimming and punching composite die carrier.

Referring to fig. 3 and 4, a trimming and punching composite die frame comprises a press workbench 1, a lower die assembly 2 arranged on the press workbench 1 and an upper die assembly 3 arranged above the lower die assembly 2. The lower die assembly 2 comprises a lower die 21 for positioning and placing a heat supply forging piece 4, a first discharging assembly 22 for discharging a first blanking material 42, a second discharging assembly 23 for discharging a second blanking material 43 and a lower die holder 24 fixedly arranged on the top surface of the press workbench 1. The upper die assembly 3 comprises a trimming die for matching with the lower die 21 in a die clamping manner, and the trimming die comprises a trimming ring 31 and a trimming punch 32.

When the hot forging 4 is positioned and placed on the lower die 21, the trimming collar 31 corresponds to the junction of the first trimming 42 and the piston body 41, and the trimming punch 32 is disposed in the trimming collar 31 and corresponds to the second trimming 43. When the upper die assembly 3 moves downward to clamp the lower die assembly 2, the trimming collar 31 and the blanking punch 32 cut the first and second blanks 42 and 43, respectively, from the hot forging 4.

Referring to fig. 5 and 6, the first discharging assembly 22 includes a lifting plate 221 lifting and disposed outside the lower die 21 and used for positioning the cut first cut material 42, first driving members 222 symmetrically disposed at two sides of the lifting plate 221 and used for driving the lifting plate 221 to lift, and a flash sliding rail 223 obliquely disposed at one side of the lower die 21. Wherein, the lower die holder 24 is further provided with a supporting plate 25 for supporting the lifting plate 221 and a guiding assembly 26 for guiding the lifting plate 221. The support plate 25 includes a support pad 251 bolted to the top surface of the lower die holder 24 and a lower die mounting plate 252 positioned on the top surface of the support pad 251. Wherein, the lower die mounting plate 252 and the lower die 21 are fixed by bolts, and the lower die mounting plate 252 is provided with a positioning ring groove 2522 for placing the lower die 21.

The lifter plate 221 includes a first push plate 2211 and a second push plate 2212. The first push plate 2211 is sleeved outside the lower die 21, and the first push plate 2211 is provided with a first convex ring 22111 for positioning the first blanking 42 in a falling way. The height of the first collar 22111 is lower than the height of the stepped surface 211 of the lower die 21. The second push plate 2212 is sleeved outside the first push plate 2211 and is fixed with the first push plate 2211 through bolts. The second push plate 2212 has extensions 22121 on both sides corresponding to the first driving member 222. The side of the first convex ring 22111 far from the flash sliding rail 223 is provided with a notch for the manipulator to horizontally extend in.

The first driver 222 is cylinder driven and is provided with a throttle valve for controlling the push-out rate of the output shaft. The first driving member 222 is arranged vertically upward with an output shaft, and there is a lifting gap between the output shaft and the bottom surface of the extension portion 22121. Compared with the arrangement of rigidly connecting the first driving members 222 and the lifter plates 221, the arrangement of the lifting gap can reduce the probability of deflection of the lifter plates 221 due to deviation of lifting of the two first driving members 222.

Referring to fig. 4 and 6, the guide assembly 26 includes a push plate guide 261 slidably provided to the support plate 25, a lubrication copper sleeve 262 sleeved with the push plate guide 261, and a connection bolt 263 for connecting the push plate guide 261 and the second push plate 2212. The support plate 25 has guide holes 253 penetrating both side end surfaces and slidably disposed by the push plate guide 261, and an inner diameter of the guide holes 253 is larger than an outer diameter of the push plate guide 261. The lower die mounting plate 252 has copper sleeve grooves 2521 in the guide holes 253 in which the lubricating copper sleeve 262 is disposed. The push plate guide 261 is attached to the inner wall of the lubricating copper sleeve 262. The end of the lubrication copper sleeve 262 facing the support pad 251 is integrally formed with a stop ring 2621, and the end of the push plate guide 261 has an abutment ring 2611 that abuts against the stop ring 2621 in a limiting manner. The abutment of the stopper ring 2621 and the abutment ring 2611 can play a role in limiting the lifting of the lifter plate 221, and reduce the probability of disengagement of the push plate guide 261. In the present embodiment, the lower die assembly 2 has four sets of guide members 26, and the four sets of guide members 26 are uniformly arranged at four corners of the lifter plate 221.

After the upper die assembly 3 and the lower die assembly 2 are assembled, the first blanking 42 is separated from the hot forging 4 and falls onto the positioning convex ring, the hot forging 4 after stamping is grabbed and unloaded from the lower die 21 by a first manipulator, then the first driving piece 222 is started, the lifting plate 221 is lifted until the positioning convex ring is higher than the height of the step surface 211 of the lower die 21, and then the second manipulator horizontally stretches into the positioning convex ring, so that the first blanking 42 is grabbed in the vertical direction; after grabbing, the first material 42 moves to the flash slide rail 223, so that the first material 42 automatically slides down along the flash slide rail 223 to be discharged.

Referring to fig. 4 and 7, the second discharging assembly 23 includes a second driving member 231 horizontally disposed on top of the lower die holder 24, a pushing block 232 disposed on an output shaft of the second driving member 231, and a guide plate 233 disposed on the side of the lower die holder 24 away from the second driving member 231. The guide plate 233 and the flash slide rail 223 are located on the same side, and the guide plate 233 is located below the flash slide rail 223.

The second driving member 231 is driven by a cylinder, and an output shaft of the second driving member 231 faces the guide plate 233. The lower die assembly 2 has a pushing channel 27 for the output shaft of the second driving member 231 to horizontally slide. Wherein, the lower die 21 has a communication hole 212 connected to the pushing channel 27, and the communication hole 212 penetrates through the lower die mounting plate 252, so that the second blank 43 can drop to the pushing channel 27 along the communication hole 212 after the second blank 43 is cut by the blank punch 32.

The output shaft of the second driving member 231 is matched with the length of the pushing channel 27, a cylinder mounting plate 28 for fixing the tail end of the second driving member 231 is arranged on the lower die holder 24, and a dust cover 281 for covering the second driving member 231 is also fixed on the cylinder mounting plate 28 through bolts.

Referring to fig. 3 and 4, the upper die assembly 3 further includes an upper die holder 33 corresponding to the lower die holder 24, an upper die mounting plate 34 disposed at the bottom of the upper die holder 33, and a pressing assembly 35 for pressing the hot forging 4. The upper die holder 33 and the lower die holder 24 are connected in a sliding manner through a guide pillar and a guide sleeve. The lower die holder 24 is further provided with a strike post 29 on one side of the guide post, and the upper die holder 33 is provided with a strike block 36 on one side of the guide sleeve, which is matched with the strike post 29. The impact post 29 is made of low carbon steel, and the impact post 29 is used for limiting the pressing down of the upper die assembly 3.

Referring to fig. 4 and 8, the upper die mounting plate 34 includes an upper die sleeve 341 and a punch mounting base 342. The upper die sleeve 341 is fixedly connected with the punch mounting seat 342 through bolts, and the upper die sleeve 341 is fixedly connected to the bottom of the upper die holder 33 through bolts. The trimming collar 31 and the blanking punch 32 are both in bolted connection with the punch mount 342, and the trimming collar 31 and the blanking punch 32 are coaxially arranged.

The blanking punch 32 includes a punch holder 321 connected to the upper die mounting plate 34 and a punching punch 322 mounted to the bottom of the punch holder 321. The end of the punch 322 has a punch annulus 3221 from which the second trim 43 is cut and the end of the trim collar 31 has a trim annulus 312 from which the first trim 42 is cut. The end surface of the punching punch 322 has a relief groove 3222, and the hot forging 4 has a positioning bump 431 corresponding to the relief groove 3222 on the end surface of the first blank 42. The relief groove 3222 is larger in size than the positioning bump 431.

The hold-down assembly 35 includes a plurality of hold-down members 351, hold-down bars 352 connecting the hold-down members 351, hold-down mounts 353 for simultaneously securing the plurality of hold-down bars 352, and hold-down plates 354 for press-fitting with the hot forging 4. The punch mount 342 has a mounting chamber 3421 in which the hold-down bar 352 and the hold-down mount 353 are slidably disposed.

The pressing member 351 is a nitrogen spring. The nitrogen spring is consistent with the structure in the prior art, a spring seat of the nitrogen spring is fixed with an upper die holder 33 through bolts, and an output shaft is vertically downwards arranged. The output shafts and the pressing bars 352 are in one-to-one correspondence and coaxially connected. The upper die sleeve 341 has a deformation chamber 3411 for compression of the nitrogen spring, and the punch mount 342 has a slide through hole 3422 for sliding of the pressing rod 352. In this embodiment, the upper die assembly 3 is provided with three pressing members 351, and the three pressing members 351 are circumferentially spaced along the axis of the blanking punch 32.

The upper die assembly 3 is also provided with a spring platen 37 between the upper die sleeve 341 and the punch mount 342. The spring pressing plate 37 has a through hole for the pressing rod 352 to pass through, which communicates with the deformation chamber 3411 and the slide through hole 3422. The spring pressing plate 37 can play a limiting role on the pressing rod 352, and the pressing rod 352 is provided with a pressing limiting ring 3521 which is in limiting abutting connection with the spring pressing plate 37 at the end part of the deformation chamber 3411.

Referring to fig. 8 and 9, the pressing mount 353 is an annular collar slidably fitted over the outside of the blanking punch 32. The abutment ring surface 311 of the limiting pressing mount 353 is provided at the inner junction of the punch mount 342 and the trim collar 31 for limiting the detachment of the pressing mount 353 from the mounting chamber 3421. The inner wall of the punch mounting seat 342 is further provided with an anti-rotation key 38 for limiting the rotation of the pressing mounting seat 353, the anti-rotation key 38 is fixedly connected with the punch mounting seat 342 through an anti-rotation screw 381, and the punch mounting seat 342 is provided with an anti-rotation groove 3423 for arranging the anti-rotation key 38. The outer side wall of the compression mounting seat 353 is provided with an anti-rotation plane 3531 corresponding to the anti-rotation key 38, so that the probability of circumferential rotation of the compression mounting seat 353 is reduced, and the stability of stamping is ensured.

The compacting plate 354 is bolted to the bottom of the compacting mount 353, and the compacting plate 354 includes a connecting ring and compacting parts integrally provided on opposite sides of the connecting ring, the connecting ring abuts against the top surface of the hot forging 4, and the compacting parts are inserted into the piston body 41 and attached to the inner wall of the piston slot 411.

When the upper die assembly 3 and the lower die assembly 2 are assembled, the compacting plates 354 and the hot forging 4 are matched and inserted, and the compacting mounting seat 353 moves towards the top of the mounting cavity 3421 along with the downward movement of the trimming ring sleeve 31 and the trimming punch 32, and meanwhile, the compacting rod 352 is driven to push towards the nitrogen spring, and the nitrogen spring generates compression deformation; when the blanking is completed and the upper die assembly 3 moves upwards and resets, the trimming ring 31 and the blanking punch 32 are gradually separated from the product, and in the separation process, the nitrogen spring is stretched, so that the compression mounting seat 353 moves towards the bottom of the mounting cavity 3421, the compression plate 354 is always compressed on the product, and the probability that the product is driven by the trimming ring 31 to move upwards is reduced; when the nitrogen spring returns to the normal state, the pressing plate 354 does not press the product any more, and at this time, the trimming collar 31 and the blanking punch 32 are separated from the product.

The implementation principle of the trimming and punching composite die carrier provided by the embodiment of the application is as follows: arranging the hot forging 4 to be processed on the lower die 21 by using a manipulator; starting hydraulic equipment to perform die assembly operation, and cutting off the first trimming 42 and the second trimming 43 through the trimming ring 31 and the trimming punch 32 respectively; after the blanking is completed, the upper die assembly 3 is reset, and the product is always arranged on the lower die 21 under the action of the pressing plate 354; grabbing and unloading the product subjected to the blanking by a mechanical arm again; the first and second blanks 42, 43 are then discharged from the lower die holder 24 by the first and second discharge assemblies 22, 23, respectively.

The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims (6)

1. The trimming and punching composite die carrier is characterized by comprising a press workbench (1), a lower die assembly (2) arranged on the press workbench (1) and used for placing a hot forging piece (4), and an upper die assembly (3) arranged above the lower die assembly (2) and used for punching, wherein the lower die assembly (2) comprises a lower die (21) used for positioning and placing a hot forging piece (4), the upper die assembly (3) comprises a trimming die used for punching the hot forging piece (4), and the trimming die comprises a trimming ring (31) used for punching a first trimming material (42) and a trimming punch (32) arranged in the trimming ring (31) and used for punching a second trimming material (43);

The upper die assembly (3) further comprises an upper die holder (33), an upper die mounting plate (34) for mounting the trimming die and the blanking punch (32) and a pressing assembly (35) for pressing the hot forging piece (4), the pressing assembly (35) comprises a plurality of pressing pieces (351) which are circumferentially arranged at intervals along the blanking punch (32), pressing rods (352) connected with the pressing pieces (351), pressing mounting seats (353) for mounting the pressing rods (352) and pressing plates (354) for pressing the hot forging piece (4), and when the upper die assembly (3) and the lower die assembly (2) finish die assembly reset, the pressing assembly (35) has the trend of always pressing the hot forging piece (4) on the lower die (21);

The compression piece (351) is a nitrogen spring, the nitrogen spring is fixedly arranged on the upper die mounting plate (34), two ends of the compression rod (352) are respectively connected with an output shaft of the nitrogen spring and the top surface of the compression mounting seat (353), and a gap for the compression rod (352) to slide is reserved between the compression mounting seat (353) and the upper die mounting plate (34);

the lower die assembly (2) comprises a first discharging assembly (22) for discharging a first blanking (42), the first discharging assembly (22) comprises a lifting plate (221) which is arranged on the outer side of the lower die (21) in a lifting manner and used for arranging the cut first blanking (42), a first driving piece (222) which drives the lifting plate (221) to lift, and a flash sliding rail (223) which is obliquely arranged on one side of the lower die (21),

The top of the lifting plate (221) is provided with a first convex ring (22111) for arranging a first blanking (42), the first convex ring (22111) is provided with a notch for horizontally extending a manipulator, the first driving parts (222) are symmetrically arranged on two sides of the lifting plate (221), and lifting gaps are formed between an output shaft of the first driving parts (222) and the bottom of the lifting plate (221);

the hot forging piece (4) comprises a piston main body (41), a first blanking material (42) to be cut is arranged on the outer side wall of the piston main body (41), a piston groove (411) is formed in the top of the piston main body (41), and a second blanking material (43) to be cut is arranged on the bottom wall of the piston groove (411).

2. A trimming and punching composite die carrier according to claim 1, characterized in that the lower die assembly (2) further comprises a second discharge assembly (23) for discharging a second cut material (43);

The second discharging assembly (23) comprises a second driving piece (231) arranged on one side of the lower die (21), a pushing block (232) connected with an output shaft of the second driving piece (231) and used for pushing a second blanking piece (43), and a guide plate (233) arranged on one side of the second driving piece (231), wherein the guide plate is far away from the side of the second driving piece (231), the lower die assembly (2) is provided with a pushing channel (27) for sliding the pushing block (232), and the pushing channel (27) is communicated with a piston groove (411) of the hot forging piece (4).

3. The trimming and punching composite die carrier according to claim 1, wherein the lower die assembly (2) is provided with a supporting plate (25) for supporting the lifting plate (221) and a guiding assembly (26) for guiding the lifting plate (221) to lift, and the supporting plate (25) comprises a supporting base plate (251) and a lower die mounting plate (252) which is arranged on the top of the supporting base plate (251) and is used for fixedly mounting the lower die (21).

4. A trimming and punching composite die carrier according to claim 3, characterized in that the guide assembly (26) comprises a push plate guide rod (261) slidably mounted on the support plate (25), a lubricating copper sleeve (262) sleeved on the push plate guide rod (261) and a connecting bolt (263) for connecting the push plate guide rod (261) and the lifting plate (221), and the support plate (25) is provided with guide holes (253) penetrating through two side end surfaces and being slidably arranged for the push plate guide rod (261).

5. The trimming and punching composite die carrier according to claim 4, wherein the lower die mounting plate (252) is provided with a mounting groove for arranging the lubricating copper sleeve (262) in the guide hole (253), the lubricating copper sleeve (262) is provided with a limiting ring (2621) for limiting the push plate guide rod (261), and an end part of the push plate guide rod (261) is provided with an abutting ring (2611) for limiting and abutting the limiting ring (2621).

6. The trimming and punching composite die frame according to claim 1, wherein an anti-rotation key (38) abutting against the pressing mounting seat (353) is arranged on the inner side of the upper die mounting plate (34), an anti-rotation bolt (381) connected with the anti-rotation key (38) is arranged on the upper die mounting plate (34), and an anti-rotation plane (3531) corresponding to the anti-rotation key (38) is arranged on the outer wall of the pressing mounting seat (353).