CN113751573A - Inner and outer edge double-station punching die and punching process thereof - Google Patents

Abstract

The invention provides an inner and outer edge double-station punching die and a punching process thereof, and the inner and outer edge double-station punching die is characterized by comprising a lower die bottom plate, guide posts, guide sleeves, a lower die positioning block, an upper die bottom plate, a connecting plate, a pressure rod, a supporting plate, a middle plate, a cutter block and a punch, wherein the lower die positioning block is arranged at the top of the lower die bottom plate, the guide posts are respectively arranged at four corners of the top of the lower die bottom plate, the guide sleeves are respectively arranged at four corners of the upper die bottom plate, and the guide sleeves are matched with the guide posts for use; the bottom of the upper die bottom plate is provided with a supporting plate, and the bottom of the supporting plate is provided with a middle plate; the invention relates to an inner and outer edge double-station punching die and a punching process thereof, which have the function of deburring non-standard castings, can simultaneously punch inner and outer edges of castings with various sizes and thicknesses, achieves the deburring effect, and has the advantages of high punching efficiency, great labor reduction, time and labor saving and great improvement on punching efficiency.

Description

Inner and outer edge double-station punching die and punching process thereof

Technical Field

The invention relates to the technical field of punching dies, in particular to an inner and outer edge double-station punching die and a punching process thereof.

Background

In the production process, according to related quality and technical requirements, parting line burrs and a water inlet of a blank product with uneven edges are trimmed, and in general, the machining process of trimming the parting line burrs and the water inlet of the blank product can be completed by the combined linkage of multiple machine tools, multiple processes and multiple stations, such as a milling machine, a grinding wheel machine tool, an angle grinder, a straight grinder and the like, so that the time and labor consumption are high, the investment of manpower equipment is large, the production efficiency is low, the cost is high, the quality of the produced product is uneven, and a punching die is researched in the prior art to trim the burrs of the metal casting parts;

the existing punching die can only process the parting surface of a single outer edge or inner hole and a water inlet of a casting; the outer edge and the inner hole are processed simultaneously in one process, so that a plurality of sets of dies or even a plurality of devices are required to work to achieve the effect, namely single-station outer edge punching or single-station inner hole punching; placing the casting on a cutter set with a matched structure, moving the upper die downwards, pressing the casting into the cutter set, and punching burrs after the casting passes through the cutter set; the burrs of the parting line of the casting and the water inlet are removed in a stamping mode, the existing punching die does not have the function of deburring the non-standard casting, such as the flywheel housing, the support and the caliper are inconsistent in specification and dimension, the whole thickness of the flywheel housing is larger than that of the support and the caliper, in addition, irregular through grooves or through holes are formed in the casting process of the flywheel housing, the support and the caliper, burrs can be generated on the side walls of the through grooves and the through holes, the existing punching die can only remove the burrs at the edge of the casting or can only remove the burrs at the side wall of a slotted hole of the casting, for the flywheel housing casting with higher thickness, the punching die can only remove the burrs at the upper half part of the casting, the burrs at the lower half part with large thickness and the side walls of the through grooves and the through holes need to be removed by using external grinding equipment by workers, and the work burden is increased for the workers, the removal efficiency of the punching die is reduced;

the water inlet of foundry goods can not be once only die-cut to current die-cut mould, still needs follow-up polishing and cutting, has just so wasted production time, has reduced production efficiency, and the thickness of water inlet will be much more than deckle edge moreover, directly dashes and cuts and can cause the injury to the foundry goods, and current knife tackle can't once only be once only with the water inlet die-cut come down, if once only die-cut can lead to the foundry goods to scrap because die-cut volume is too big.

Disclosure of Invention

The invention aims to provide an inner and outer edge double-station punching die and a punching process thereof, which aim to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

the inner and outer edge double-station punching die comprises a lower die bottom plate, guide pillars, guide sleeves, lower die positioning blocks, an upper die bottom plate, a connecting plate, a pressing rod, a supporting plate, a middle plate, a cutter block and a punch, wherein the lower die positioning blocks are installed at the top of the lower die bottom plate, the guide pillars are respectively installed at four corners of the top of the lower die bottom plate, the guide sleeves are respectively installed at four corners of the upper die bottom plate, and the guide sleeves are matched with the guide pillars for use; the bottom of the upper die base plate is provided with a supporting plate, the bottom of the supporting plate is provided with a middle plate, the middle of the middle plate is provided with four pressure bar grooves, the bottom of the middle plate is provided with threaded holes, the number of the threaded holes is N, N is not less than 4, two ends of each outer side wall of the middle plate are respectively provided with a clamping groove, the bottom of the middle plate is provided with a cutter block, the number of the cutter block is N, N is not less than 5, one end of the cutter block is clamped in the clamping groove, the other end of the cutter block is fixed at the bottom of the middle plate through a bolt in a bolt hole, a connecting plate is arranged inside the supporting plate, a pressure bar is arranged in the pressure bar groove, the top of the pressure bar is provided with a connecting plate, the middle of the bottom of the middle plate is provided with a punch through a punch base, and the cutter block is arranged outside the punch;

as a further scheme of the invention: the lower die base plate is internally provided with a blanking groove, and the blanking groove is arranged on the lower side of the lower die double-station positioning block;

as a further scheme of the invention: a lower die base plate is arranged on the lower die base plate, and a lower die large support positioning block is arranged at the top of the lower die base plate;

as a further scheme of the invention: the lower die base plate is provided with a lower die small support double-station positioning block, and the lower die small support double-station positioning block is arranged on the upper side of the blanking groove;

as a further scheme of the invention: the punching device is arranged on the lower die bottom plate; the punching device comprises a lower die cutter block connecting plate, a lower die cutter block, a lower die positioning lug, a supporting block, a lower die cushion block, a lower die positioning column, a first oil cylinder, a second oil cylinder, a lower die punch, an ejection column, a lower die guide column and a lower die limiting rod, wherein the lower die cutter block connecting plate is arranged on a lower die bottom plate, the middle part of the lower die cutter block connecting plate is provided with two through grooves, the supporting block is arranged in one through groove, the top of the supporting block is provided with the lower die cushion block, the other through groove is provided with the lower die positioning column, the lower die positioning column and the lower die cushion block are respectively provided with a mounting groove, the top of the mounting groove is provided with a lower die fixing block and a lower die cushion block, and the first oil cylinder is respectively mounted through threads on the lower die fixing block and the lower die cushion block; the number of the first oil cylinders is three, the top of the first oil cylinder is provided with an ejection column, the edge of the lower die positioning column is provided with a lower die cutter block, the edge of the lower die cutter block is provided with a lower die positioning lug, and the number of the lower die positioning lugs is two; rectangular grooves are formed in the lower die positioning column, the number of the rectangular grooves is two, oil cylinders II are installed in the two rectangular grooves, and the oil cylinders II on the lower die positioning column are connected with a lower die punch; the number of the second oil cylinders is two, lower die guide blocks are mounted on two sides of the lower die punch, lower die limiting rods are arranged at four corners of a lower die cutter block connecting plate respectively, and lower die guide columns are arranged at two ends of the lower die cutter block connecting plate respectively;

as a further scheme of the invention: the middle part of the bottom of the middle plate is provided with an ejection mechanism, the bottom of the middle plate is provided with an upper die cutter block, and the upper die cutter block is arranged on the outer side of the ejection mechanism; four corners of the bottom of the middle plate are respectively provided with an upper die supporting rod, two ends of the middle plate are respectively provided with an upper die guide sleeve, and the upper die guide sleeves are matched with the lower die guide pillars for use;

as a further scheme of the invention: the ejection mechanism comprises an upper die ejection rod, an upper die pressing plate and an upper die limiting rod, the upper die ejection rod is mounted on the upper die base plate, the number of the upper die ejection rods is six, the upper die pressing plate is mounted at the bottom of the upper die ejection rod, a connecting plate is mounted at the top of the upper die ejection rod, the upper die limiting rod is mounted at the top of the upper die pressing plate, and the number of the upper die limiting rods is four;

as a further scheme of the invention: the inner side wall of the enclosing plate is provided with a clamping groove, and the clamping groove is of a dovetail structure; the outer side wall of the cutter block is provided with a clamping block, the clamping block is of a dovetail structure, and the clamping block is clamped in the clamping groove;

as a further scheme of the invention: the side wall of the knife block is provided with a multi-step cutting edge, the multi-step cutting edge comprises a third step cutting edge, a second step cutting edge and a first step cutting edge, the second step cutting edge is arranged on the lower side of the third step cutting edge, the first step cutting edge is arranged on the lower side of the second step cutting edge, the side wall of the knife block is processed by a numerical control processing center to form a first broach slot and a second broach slot respectively, the first broach slot is arranged between the first step cutting edge and the second step cutting edge, and the second broach slot is arranged between the second step cutting edge and the third step cutting edge;

as a further scheme of the invention: the connecting plate comprises two pressure rods A and two pressure rods B, wherein the pressure rods A are arranged at the left end of the bottom of the connecting plate; the two compression rods B are arranged at the right end of the bottom of the connecting plate; the bottom of the pressure lever A is provided with a following convex surface matched with the casting, and the bottom of the pressure lever B is provided with a following concave surface matched with the casting;

as a further scheme of the invention: the connecting plate comprises a pressing rod C and a pressing rod D, wherein the pressing rod C is arranged at the left end of the bottom of the connecting plate, and the pressing rod D is arranged at the right end of the bottom of the connecting plate;

as a further scheme of the invention: the connecting plate comprises four pressure rods G, wherein the four pressure rods G are arranged on the connecting plate; a contact plate is arranged on the side wall of the compression bar F; a following convex surface matched with the casting is processed at the bottom of the pressure lever G;

as a further scheme of the invention: the connecting plate comprises a pressing rod E and a pressing rod F, wherein the pressing rod E is arranged at the front end and the rear end of the connecting plate; the compression rods F are arranged at the left end and the right end of the connecting plate;

an inner and outer edge double-station punching die and a punching process thereof have the following specific punching flow:

(4) moving the double-station punching die onto a die machine through a hoisting device, controlling a machine table template on the die machine to move downwards to be in contact with an upper die bottom plate, fixing the upper die bottom plate and the machine table template, and controlling an oil cylinder of the die machine to move downwards to extend into the upper die bottom plate for connection;

(5) moving the oil cylinder upwards to drive an upper die and a lower die of the die to separate, and mounting a casting to be punched on a lower die positioning block;

(6) the oil cylinder moves downwards to drive the upper die and the lower die to be matched, the pressure rod is attached to a casting to be punched, the punch is positioned inside a middle hole of the casting to be punched to punch the middle hole, meanwhile, the cutter block is positioned on the periphery of the casting to be punched to punch and trim rough edges of a water inlet and a parting line;

(4) the oil cylinder moves upwards to control the upper die and the lower die to be separated, the casting to be punched is clamped between the cutter block and the punch, and the casting to be punched is ejected out by the pressing rod, so that punching and trimming are completed.

The invention has the beneficial effects that: the invention relates to an inner and outer edge double-station punching die and a punching process thereof, which have the function of deburring non-standard castings, can simultaneously punch inner and outer edges of castings with various sizes and thicknesses, achieves the deburring effect, has high punching efficiency, reduces a large amount of labor, saves time and labor, and greatly improves the punching efficiency;

according to the thickness of the casting riser, a first broach slot is formed between a first step cutting edge and a second step cutting edge by machining of a numerical control machining center, a second broach slot is formed between the second step cutting edge and a third step cutting edge by machining of the numerical control machining center, and the riser on the casting is subjected to hierarchical punching, so that the service life of a cutter block can be effectively prolonged, and the punched surface of the casting is smoother;

the cutter block is connected with the clamping groove through the matching of the clamping block and the clamping groove, and the clamping block and the clamping groove are of dovetail structures, so that the cutter block is connected with the surrounding plate through the dovetail groove connecting structure, the material is saved, the use cost is reduced, the cutter block can be well combined with the surrounding plate, and the cutter block is not easy to loosen;

the end part of the knife block is clamped in the clamping groove of the enclosing plate middle plate and is fixed with the bottom plate through the screw, so that the knife block is fixed more firmly in the installation process, and the phenomenon that a casting is damaged due to position deviation in the knife block punching process is avoided;

the structure of the pressure lever is designed into various different structures, so that the pressure lever can be designed and manufactured according to the contact area with a casting, the pressure lever can position the casting in the punching process, the position deviation of the casting due to lack of positioning in the punching process is prevented, and the casting is protected;

according to the invention, the blanking groove is arranged on the lower die bottom plate, burrs punched by the cutter block are discharged from the blanking groove, and the collection of burr waste is realized.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of a lower mold structure of the large caliper of the present invention;

FIG. 3 is a schematic structural view of an upper mold of the large caliper according to the present invention;

FIG. 4 is a schematic view of the upper mold structure of the caliper with hidden support plate and middle plate;

FIG. 5 is a schematic view of a feeding chute formed at the bottom of a lower die base plate according to the present invention;

FIG. 6 is a schematic view of the lower die structure of the small caliper of the present invention;

FIG. 7 is a schematic view of the lower structure of the large bracket of the present invention;

FIG. 8 is a schematic structural view of an upper mold of the large support according to the present invention;

FIG. 9 is a schematic view of the lower mold structure of the small support of the present invention;

FIG. 10 is a schematic view of the overall structure of the flywheel housing casting processing of the present invention;

FIG. 11 is a schematic view of a lower die structure for machining a flywheel housing casting according to the present invention;

FIG. 12 is a schematic structural view of an upper die for machining a flywheel housing casting according to the present invention;

FIG. 13 is a schematic structural view of a lower die hidden lower die cushion block for machining a flywheel housing casting according to the present invention;

FIG. 14 is a schematic view of a lower die-hidden fixing block of a flywheel housing casting processing lower die according to the present invention;

FIG. 15 is a schematic view of a lower die positioning post hidden in a lower die for machining a flywheel housing casting according to the present invention;

FIG. 16 is a schematic structural view of an ejection mechanism according to the present invention;

FIG. 17 is a schematic structural view of a shroud according to the present invention;

FIG. 18 is a schematic view of a punch and a cutter block mounted to the shroud of the present invention;

FIG. 19 is a schematic view of a fastening groove formed in the surrounding plate according to the present invention;

FIG. 20 is a schematic view of a knife block with a locking block mounted thereon according to the present invention;

FIG. 21 is a schematic view showing the positional relationship among the coaming, the knife block and the punch according to the present invention;

FIG. 22 is a schematic view of a knife block configuration of the present invention;

FIG. 23 is a schematic view of a knife block with a first knife pulling groove and a second knife pulling groove;

FIG. 24 is a schematic view of a compression bar A and a compression bar B of the present invention;

FIG. 25 is a schematic view of a compression bar C and a compression bar D of the present invention;

FIG. 26 is a schematic view of a compression bar G according to the present invention;

FIG. 27 is a schematic view of a strut E and a strut F of the present invention.

As shown in the figure, 1-lower die bottom plate, 1-1 lower die positioning block, 1-2 blanking groove, 1-3 lower die double-station positioning block, 1-4 lower die base plate, 1-5 lower die large support positioning block, 1-6 lower die small support double-station positioning block, 1-7 guide pillar, 2-upper die bottom plate, 2-1 connecting plate, 2-2 compression bar, 2-21 compression bar A, 2-22 conformal convex surface, 2-23 compression bar B, 2-25 compression bar C, 2-26 compression bar D, 2-27 compression bar E, 2-28 compression bar F, 2-29 compression bar G, 2-31 contact plate, 2-3 supporting plate, 2-4 guide sleeve, 2-42 clamping groove, 2-43 compression bar groove, 2-44 threaded hole, 2-45 coaming, 2-46 coaming groove, 2-5 middle plate, 2-6 knife block, 2-61 clamping block, 2-62 third step knife edge, 2-63 second knife-pulling groove, 2-64 first knife-pulling groove, 2-65 first step knife edge, 2-66 second step knife edge, 2-7 punch, 2-8 upper die guide sleeve, 2-9 upper die knife block, 2-10 upper die pressing plate, 2-11 upper die supporting rod, 2-12 upper die limiting rod, 2-13 upper die ejecting rod, 3-lower die knife block connecting plate, 3-1 lower die knife block, 3-2 lower die positioning lug, 3-3 lower die positioning column, 3-4 oil cylinder II, 3-5 lower die punch, 3-6 ejecting column, 3-7 lower die guide column, 3-8 lower die limiting rod, 3-9 cushion block, 3-10 supporting blocks, 3-11 lower die fixing blocks and 3-12 first oil cylinders.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

Referring to fig. 1-3, in the embodiment of the invention, an inner and outer edge double-station punching die and a punching process thereof comprise a lower die bottom plate 1, guide pillars 1-7, guide sleeves 2-4, a lower die positioning block 1-1, an upper die bottom plate 2, a connecting plate 2-1, a pressure lever 2-21, a supporting plate 2-3, an intermediate plate 2-5, a cutter block 2-6 and a punch 2-7, wherein the lower die positioning block 1-1 is installed at the top of the lower die bottom plate 1, the guide pillars 1-7 are respectively installed at four corners of the top of the lower die bottom plate 1, the guide sleeves 2-4 are respectively installed at four corners of the upper die bottom plate 1, and the guide sleeves 2-4 are matched with the guide pillars 1-7 for use; the bottom of the upper die base plate 2 is provided with supporting plates 2-3, the bottom of each supporting plate 2-3 is provided with a middle plate 2-5, the middle of each middle plate 2-5 is provided with four pressure bar grooves, the bottom of each middle plate 2-5 is provided with threaded holes 2-44, the number of the threaded holes 2-44 is N, N is more than or equal to 4, two ends of each outer side wall of each middle plate 2-5 are respectively provided with a clamping groove 2-42, the bottom of each middle plate 2-5 is provided with a cutter block 2-6, the number of the cutter blocks 2-6 is N, N is more than or equal to 5, one end of each cutter block 2-6 is clamped in the clamping groove 2-42, the other end of each cutter block 2-6 is fixed at the bottom of each middle plate 2-5 through bolts in bolt holes 2-44, a connecting plate 2-1 is arranged inside the supporting plate 2-3, a pressure rod 2-2 is arranged in a pressure rod groove, the connecting plate 2-1 is arranged at the top of the pressure rod 2-2, a punch 2-7 is arranged in the middle of the bottom of the middle plate 2-5 through a punch base, and a cutter block 2-6 is arranged on the outer side of the punch 2-7;

further, the side wall of the knife block 2-6 is provided with a multi-step knife edge, the multi-step knife edge comprises a third step knife edge 2-62, a second step knife edge 2-66 and a first step knife edge 2-65, the lower side of the third stepped blade 2-62 is provided with a second stepped blade 2-66, the lower side of the second stepped blade 2-66 is provided with a first stepped blade 2-65, the side walls of the cutter blocks 2-6 are respectively processed by a numerical control processing center to form a first broach slot 2-64 and a second broach slot 2-63, the first broach slot 2-64 is provided between the first stepped blade 2-65 and the second stepped blade 2-66, the second broach slot 2-63 is arranged between the second stepped blade 2-66 and the third stepped blade 2-62;

aiming at the thickness of the riser of the casting, a first broach slot 2-64 is formed between a first step blade 2-65 and a second step blade 2-66 by the processing of a numerical control processing center, a second broach slot 2-63 is formed between the second step blade 2-66 and a third step blade 2-62 by the processing of the numerical control processing center, and the riser on the casting is subjected to hierarchical punching, so that the service life of a cutter block can be effectively prolonged, and the punched surface of the casting is smoother;

specifically, the embodiment is used for punching a large caliper casting; the lower die positioning block 1-1 is used for positioning the large calipers;

an inner and outer edge double-station punching die and a punching process thereof are disclosed, wherein the specific punching process of a large caliper casting is as follows:

(1) moving the double-station punching die onto a die machine through a hoisting device, controlling a machine table template on the die machine to move downwards to be in contact with the upper die base plate 2, fixing the upper die base plate 2 and the machine table template, controlling an oil cylinder of the die machine to move downwards and extend into the upper die base plate 2 for connection, and connecting the upper die and the lower die by matching with guide sleeves 2-4 through guide pillars 1-7;

(2) moving the oil cylinder upwards to drive an upper die and a lower die of the die to separate, and mounting the large caliper casting onto a lower die positioning block 1-1;

(3) an oil cylinder moves downwards to drive an upper die and a lower die to be assembled, a pressure rod E2-27 and a pressure rod F2-28 are respectively attached to a large caliper casting through a free-form concave surface, a punch 2-7 is positioned inside a middle hole of the large caliper casting to punch the middle hole, meanwhile, a cutter block 2-6 consisting of multi-step cutting edges is positioned on the periphery of the large caliper casting to punch and trim water inlets and parting line burrs;

(4) the oil cylinder moves upwards to control the upper die to be separated from the lower die, the large caliper casting is clamped between the cutter block 2-6 and the punch 2-7, and the pressure lever E2-27 and the pressure lever F2-28 eject the large caliper casting out to finish the punching and trimming.

Example 2

Referring to fig. 4-5, in the embodiment of the invention, the inner and outer edge double-station punching die and the punching process thereof further comprise a lower die double-station positioning block 1-3, wherein the lower die double-station positioning block 1-3 is installed at the top of a lower die bottom plate 1, a blanking groove 1-2 is formed in the lower die bottom plate 1, and the blanking groove 1-2 is formed in the lower side of the lower die double-station positioning block 1-3;

specifically, this example replaces the lower die base plate 1 and the lower die positioning block 1-1 in embodiment 1, and is used in combination with embodiment 1;

specifically, burrs punched by the cutter block 2-6 are discharged from the blanking groove 1-2, so that the collection of burr waste materials is realized;

specifically, the embodiment is used for punching the small caliper double-station casting, and can simultaneously punch two small calipers, so that the punching efficiency is improved; the lower die double-station positioning block 1-3 is used for positioning the small calipers;

specifically, clamping grooves 2-46 are formed in the inner side walls of the coamings 2-45, and the clamping grooves 2-46 are of dovetail structures; the outer side wall of the cutter block 2-6 is provided with a clamping block 2-61, the clamping block 2-61 is of a dovetail structure, and the clamping block 2-61 is clamped in a clamping groove 2-46;

an inner and outer edge double-station punching die and a punching process thereof are disclosed, wherein the specific punching process of a small caliper double-station casting is as follows:

(1) moving the double-station punching die onto a die machine through a hoisting device, controlling a machine table template on the die machine to move downwards to be in contact with an upper die bottom plate 1, fixing the upper die bottom plate 1 and the machine table template, controlling an oil cylinder of the die machine to move downwards and extend into the upper die bottom plate 1 to be connected, connecting the upper die and the lower die with a guide sleeve 2-4 through a guide pillar 1-7 in a matched manner, and connecting the upper die and the lower die with the guide sleeve 2-4 through the guide pillar 1-7 in a matched manner;

(2) moving the oil cylinder upwards to drive an upper die and a lower die of the die to separate, and mounting the small caliper double-station casting onto a lower die double-station positioning block 1-3;

(3) the oil cylinder moves downwards to drive the upper die and the lower die to be assembled, a pressure rod A2-21 and a pressure rod B2-23 are respectively attached to the small caliper double-station casting through a follower convex surface 2-22 and a follower concave surface, a punch 2-7 is positioned inside a middle hole of the small caliper double-station casting to punch the middle hole, and meanwhile, a cutter block is positioned on the periphery of the small caliper double-station casting to punch and trim water inlets and parting line rough edges;

(4) the oil cylinder moves upwards to control the upper die to be separated from the lower die, the small caliper double-station casting is clamped between the cutter block 2-6 and the punch 2-7, and the small caliper double-station casting is ejected out by the pressure lever A2-21 and the pressure lever B2-23 to complete punching and trimming;

(5) the punched raw edge waste materials are discharged from the blanking groove 1-2, and the collection of the raw edge waste materials is realized.

Example 3

Referring to fig. 6, in the embodiment of the invention, an inner and outer edge double-station punching die and a punching process thereof are provided, wherein a lower die base plate 1-4 is installed on a lower die base plate 1, and a lower die large support positioning block 1-5 is installed at the top of the lower die base plate 1-4;

specifically, this embodiment replaces the lower mold base plate 1 and the lower mold positioning block 1-1 in embodiment 1, and is used in combination with embodiment 1;

specifically, the embodiment is used for punching a large bracket casting;

specifically, the lower die large support positioning block in the embodiment is used for positioning a large support casting;

an inner and outer edge double-station punching die and a punching process thereof are disclosed, wherein the specific punching process of a large support casting is as follows:

(1) moving the double-station punching die onto a die machine through a hoisting device, controlling a machine table template on the die machine to move downwards to be in contact with an upper die bottom plate 1, fixing the upper die bottom plate 1 and the machine table template, controlling an oil cylinder of the die machine to move downwards and extend to the interior of the upper die bottom plate 1 for connection, and connecting the upper die and the lower die by matching guide pillars 1-7 and guide sleeves 2-4;

(2) moving the oil cylinder upwards to drive an upper die and a lower die of the die to separate, and mounting the large support casting onto a positioning block 1-5 of a large support of the lower die;

(3) the oil cylinder moves downwards to drive the upper die and the lower die to be matched, a pressure lever C2-25 and a pressure lever D2-26 are respectively attached to the large support casting through a conformal concave surface, a punch 2-7 is positioned inside a middle hole of the large support casting to punch the middle hole, meanwhile, a cutter block 2-6 is positioned on the periphery of the large support casting to punch and trim rough edges of a water inlet and a parting line;

(4) the oil cylinder moves upwards to control the upper die to be separated from the lower die, the large support casting is clamped between the cutter block 2-6 and the punch 2-7, and the pressure lever C2-25 and the pressure lever D2-26 eject the large support casting to finish the punching and trimming.

Example 4

Referring to fig. 7, in the embodiment of the invention, the inner and outer edge double-station punching die and the punching process thereof further comprise lower die small support double-station positioning blocks 1-6, wherein the lower die small support double-station positioning blocks 1-6 are installed on a lower die bottom plate 1, and the lower die small support double-station positioning blocks 1-6 are installed on the upper side of a blanking groove 1-2;

specifically, this embodiment replaces the lower mold base plate 1 and the lower mold positioning block 1-1 in embodiment 1, and is used in combination with embodiment 1;

specifically, the embodiment punches a small-bracket double-punch casting;

specifically, the small support double-station positioning blocks 1-6 in the embodiment position the small support double-punch casting;

an inner and outer edge double-station punching die and a punching process thereof are disclosed, wherein the specific punching process of a small bracket double-punching casting is as follows:

(1) moving the double-station punching die onto a die machine through a hoisting device, controlling a machine table template on the die machine to move downwards to be in contact with an upper die bottom plate, fixing the upper die bottom plate 2 and the machine table template, and controlling an oil cylinder of the die machine to move downwards to extend into the upper die bottom plate for connection;

(2) moving the oil cylinder upwards to drive an upper die and a lower die of the die to separate, and mounting the small bracket double-punch casting onto the lower die small bracket double-station positioning blocks 1-6;

(3) an oil cylinder moves downwards to drive an upper die and a lower die to be matched, a pressure rod G2-29 and a contact plate 2-31 are respectively attached to a small bracket casting through a following convex surface 2-22, a punch 2-7 is positioned inside a middle hole of the small bracket casting to punch the middle hole, and meanwhile, a cutter block 2-6 is positioned on the periphery of the small bracket double-punch casting to punch and trim a water inlet and parting line rough edges;

(4) the oil cylinder moves upwards to control the upper die and the lower die to be separated, the small bracket double-station casting is clamped between the cutter block and the punch, and the press rod G2-29 and the contact plate 2-31 eject out the small bracket double-station casting to finish punching and trimming;

(5) the punched raw edge waste materials are discharged from the blanking groove 1-2, and the collection of the raw edge waste materials is realized.

Example 5

Referring to fig. 8-15, in the embodiment of the present invention, an inner and outer edge double-station punching mold and a punching process thereof include a punching device, wherein the punching device is installed on a lower mold base plate 1;

specifically, the punching device comprises a lower die cutter block connecting plate 3, a lower die cutter block 3-1, a lower die positioning lug 3-2, supporting blocks 3-10, lower die cushion blocks 3-9, lower die positioning columns 3-3, oil cylinders one 3-12, oil cylinders two 3-4, lower die punches 3-5, ejection columns 3-6, lower die guide columns 3-7 and lower die limiting rods 3-8, wherein the lower die cutter block connecting plate 3 is installed on a lower die base plate 1, the middle part of the lower die cutter block connecting plate 3 is provided with two through grooves, one of the through grooves is provided with the supporting blocks 3-10, the tops of the supporting blocks 3-10 are provided with the lower die cushion blocks 3-9, the other through groove is provided with the lower die positioning columns 3-3, the lower die positioning columns 3-3 and the insides of the cushion blocks 3-9 are respectively provided with installation grooves, the top of the mounting groove is provided with a lower die fixing block 3-11 and a lower die cushion block 3-9, three oil cylinders 3-12 are respectively mounted through threads on the lower die fixing block 3-11 and the lower die cushion block 3-9, the top of each oil cylinder 3-12 is provided with an ejection column 3-6, the edge of each lower die positioning column 3-3 is provided with a lower die cutter block 3-1, the edge of each lower die cutter block 3-1 is provided with a lower die positioning lug 3-2, and the number of the lower die positioning lugs 3-2 is two; rectangular grooves are formed in the lower die positioning columns 3-3, the number of the rectangular grooves is two, oil cylinders II 3-4 are arranged in the two rectangular grooves, and the oil cylinders II 3-4 on the lower die positioning columns 3-3 are connected with lower die punch heads 3-5; the number of the second oil cylinders 3-4 is two, four corners of the lower die cutter block connecting plate 3 are respectively provided with lower die limiting rods 3-8, and two ends of the lower die cutter block connecting plate 3 are respectively provided with lower die guide pillars 3-7;

specifically, an ejection mechanism is arranged in the middle of the bottom of the middle plate 2-5, an upper die cutter block 2-9 is arranged at the bottom of the middle plate 2-5, and the upper die cutter block 2-9 is arranged on the outer side of the ejection mechanism; four corners of the bottom of the middle plate 2-5 are respectively provided with an upper die supporting rod 2-11, two ends of the middle plate 2-5 are respectively provided with an upper die guide sleeve 2-8, and the upper die guide sleeves 2-8 are matched with the lower die guide pillars 3-7 for use;

specifically, the ejection mechanism comprises upper die ejection rods 2-13, upper die pressing plates 2-10 and upper die limiting rods 2-12, the upper die ejection rods 2-13 are mounted on the upper die base plate 2, the number of the upper die ejection rods 2-13 is six, the upper die pressing plates 2-10 are mounted at the bottoms of the upper die ejection rods 2-13, connecting plates 2-1 are mounted at the tops of the upper die ejection rods 2-13, the upper die limiting rods 2-12 are mounted at the tops of the upper die pressing plates 2-10, and the number of the upper die limiting rods 2-12 is four;

specifically, the embodiment is different from another technical scheme of the embodiments 1 to 4, and is used for punching operation of flywheel shell castings with large thickness;

an inner and outer edge double-station punching die and a punching process thereof are disclosed, wherein the specific punching process of a flywheel shell casting is as follows:

(1) the double-station punching die is moved onto a die machine through a hoisting device, a machine table template on the die machine is controlled to move downwards to be in contact with a supporting plate 2-3, the supporting plate 2-3 is fixed with the machine table template, an oil cylinder of the die machine is controlled to move downwards and extend into the supporting plate 2-3 to be connected, a lower die cutter block connecting plate 3 is connected with a connecting ejector rod on the die machine and is controlled by the control oil cylinder, a lower die limiting rod 3-8 is matched with an upper die supporting rod 2-11 for use, an upper die guide sleeve 2-8 is matched with a lower die guide pillar 3-7 for use, and the upper die is connected with the lower die;

(2) the oil cylinder moves upwards to drive an upper die and a lower die of the die to separate, a first oil cylinder 3-12 is started to jack up an ejection column 3-6, a flywheel shell casting is placed on the ejection column 3-6, the first oil cylinder 3-12 retracts to drive the ejection column 3-6 to slowly fall down, so that the flywheel shell casting is installed to the outer sides of the lower die positioning column 3-3 and a lower die cushion block 3-9, and a lower die positioning lug 3-2 is positioned on the outer side of the flywheel shell casting to realize positioning;

(3) the upper die and the lower die are assembled, the upper die pressing plate 2-10 is attached to the flywheel shell casting, meanwhile, the upper die cutter block 2-9 in the moving process trims the rough edges of the upper half part of the periphery of the flywheel shell casting, the upper die keeps a punching state, and the upper die pressing plate 2-10 keeps an attachment state with the flywheel shell casting;

(4) the oil cylinder II 3-4 drives the lower die punch 3-5 to move, burrs on the inner side wall of the flywheel shell casting are trimmed, and the oil cylinder II 3-4 contracts to retract the lower die punch 3-5;

(5) a control oil cylinder on the die machine controls a connecting ejector rod to jack up a lower die cutter block connecting plate 3, so that a lower die cutter block 3-1 moves upwards, burrs on the lower half part of the periphery of the flywheel shell casting are punched, and the control oil cylinder controls the connecting ejector rod to drop the lower die cutter block 3-1 to an initial position;

(6) the lower die is separated from the lower die, the flywheel housing casting is clamped on the upper die, the upper die pressing plate 2-10 ejects the flywheel housing casting to fall onto the lower die positioning column 3-3, the first oil cylinder 3-12 drives the ejection column 3-6 to eject the lower die fixing block 3-11 to eject the flywheel housing casting, so that the flywheel housing casting is separated from the lower die positioning column 3-3, the flywheel housing casting is taken away through the hoisting device, the ejection column 3-6 drives the lower die fixing block 3-11 to retract, and punching and trimming of the flywheel housing casting are completed.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. While the invention has been described with respect to the above embodiments, it will be understood by those skilled in the art that the invention is not limited to the above embodiments, which are described in the specification and illustrated only to illustrate the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (10)

1. The inner and outer edge double-station punching die is characterized by comprising a lower die bottom plate, guide pillars, guide sleeves, lower die positioning blocks, an upper die bottom plate, a connecting plate, a pressing rod, a supporting plate, a middle plate, a cutter block and a punch, wherein the lower die positioning blocks are arranged at the top of the lower die bottom plate, the guide pillars are respectively arranged at four corners of the top of the lower die bottom plate, the guide sleeves are respectively arranged at four corners of the upper die bottom plate, and the guide sleeves are matched with the guide pillars for use; the punching die comprises an upper die base plate, a middle plate, four pressing rod grooves, threaded holes, clamping grooves, a connecting plate and a punching head, wherein the bottom of the upper die base plate is provided with a supporting plate, the bottom of the supporting plate is provided with a middle plate, the middle of the middle plate is provided with the pressing rod grooves, the number of the pressing rod grooves is four, the bottom of the middle plate is provided with the threaded holes, the number of the threaded holes is N, N is not less than 4, the two ends of each outer side wall of the middle plate are respectively provided with the clamping grooves, the bottom of the middle plate is provided with the cutting block, the number of the cutting block is N, N is not less than 5, one end of the cutting block is clamped in the clamping grooves, the other end of the cutting block is fixed to the bottom of the middle plate through a bolt in a bolt hole, the connecting plate is arranged inside the supporting plate, the pressing rod grooves are provided with the pressing rods, the top of the pressing rods is provided with the connecting plate, the middle of the bottom of the middle plate is provided with the punching head through a punching head base, and the cutting block is arranged outside the punching head.

2. The inner and outer edge double-station punching die and the punching process thereof according to claim 1, characterized by comprising a punching device, wherein the punching device is arranged on a lower die base plate; the punching device comprises a lower die cutter block connecting plate, a lower die cutter block, a lower die positioning lug, a supporting block, a lower die cushion block, a lower die positioning column, a first oil cylinder, a second oil cylinder, a lower die punch, an ejection column, a lower die guide column and a lower die limiting rod, wherein the lower die cutter block connecting plate is arranged on a lower die bottom plate, the middle part of the lower die cutter block connecting plate is provided with two through grooves, the supporting block is arranged in one through groove, the top of the supporting block is provided with the lower die cushion block, the other through groove is provided with the lower die positioning column, the lower die positioning column and the lower die cushion block are respectively provided with a mounting groove, the top of the mounting groove is provided with a lower die fixing block and a lower die cushion block, and the first oil cylinder is respectively mounted through threads on the lower die fixing block and the lower die cushion block; the number of the first oil cylinders is three, the top of the first oil cylinder is provided with an ejection column, the edge of the lower die positioning column is provided with a lower die cutter block, the edge of the lower die cutter block is provided with a lower die positioning lug, and the number of the lower die positioning lugs is two; rectangular grooves are formed in the lower die positioning column, the number of the rectangular grooves is two, oil cylinders II are installed in the two rectangular grooves, and the oil cylinders II on the lower die positioning column are connected with a lower die punch; the number of the second oil cylinders is two, lower die guide blocks are mounted on two sides of the lower die punch, lower die limiting rods are arranged at four corners of a lower die cutter block connecting plate respectively, and lower die guide columns are arranged at two ends of the lower die cutter block connecting plate respectively; the middle part of the bottom of the middle plate is provided with an ejection mechanism, the bottom of the middle plate is provided with an upper die cutter block, and the upper die cutter block is arranged on the outer side of the ejection mechanism; four corners of the bottom of the middle plate are respectively provided with an upper die supporting rod, two ends of the middle plate are respectively provided with an upper die guide sleeve, and the upper die guide sleeves are matched with the lower die guide pillars for use; the ejection mechanism comprises last mould ejector pin, cope match-plate pattern, last mould gag lever post, install last mould ejector pin on the last die bed plate, the quantity of going up the mould ejector pin is six, the cope match-plate pattern is installed to the bottom of going up the mould ejector pin, the connecting plate is installed at the top of going up the mould ejector pin, the gag lever post is installed at the top of cope match-plate pattern, the quantity of going up the mould gag lever post is four.

3. The inner and outer edge double-station punching die and the punching process thereof according to claim 1, wherein the lower die double-station positioning block is arranged at the top of a lower die bottom plate, a blanking groove is formed in the lower die bottom plate, and the blanking groove is formed in the lower side of the lower die double-station positioning block; a lower die base plate is arranged on the lower die base plate, and a lower die large support positioning block is arranged at the top of the lower die base plate; the lower die small support double-station positioning block is arranged on a lower die bottom plate and is arranged on the upper side of the blanking groove.

4. The inner and outer edge double-station punching die and the punching process thereof according to claim 1, wherein the inner side wall of the coaming is provided with a clamping groove, and the clamping groove is of a dovetail structure; the lateral wall of sword piece is provided with the joint piece, the joint piece is the forked tail structure, the joint piece joint is in the joint groove.

5. The inner and outer edge double-station punching die and the punching process thereof as claimed in claim 1, wherein the side wall of the knife block is provided with a multi-step blade, the multi-step blade comprises a third step blade, a second step blade and a first step blade, the second step blade is arranged at the lower side of the third step blade, the first step blade is arranged at the lower side of the second step blade, the side wall of the knife block is respectively machined by a numerical control machining center to form a first broach slot and a second broach slot, the first broach slot is arranged between the first step blade and the second step blade, and the second broach slot is arranged between the second step blade and the third step blade.

6. The inner and outer edge double-station punching die and the punching process thereof according to claim 1 are characterized by comprising two pressing rods A and two pressing rods B, wherein the pressing rods A are arranged at the left end of the bottom of the connecting plate; the two compression rods B are arranged at the right end of the bottom of the connecting plate; the bottom of the pressure lever A is provided with a following convex surface matched with the casting, and the bottom of the pressure lever B is provided with a following concave surface matched with the casting.

7. The inner and outer edge double-station punching die and the punching process thereof according to claim 1 are characterized by comprising a pressing rod C and a pressing rod D, wherein the pressing rod C is arranged at the left end of the bottom of the connecting plate, and the pressing rod D is arranged at the right end of the bottom of the connecting plate.

8. The inner and outer edge double-station punching die and the punching process thereof according to claim 1, wherein the inner and outer edge double-station punching die comprises four pressing rods G, and the pressing rods G are arranged on a connecting plate; a contact plate is arranged on the side wall of the compression bar F; and a following convex surface matched with the casting is processed at the bottom of the pressure lever G.

9. The inner and outer edge double-station punching die and the punching process thereof according to claim 1, wherein the inner and outer edge double-station punching die comprises a pressing rod E and a pressing rod F, and the pressing rods E are arranged at the front end and the rear end of a connecting plate; the compression bar F is arranged at the left end and the right end of the connecting plate.

10. An inner and outer edge double-station punching die and a punching process thereof have the following specific punching flow:

(1) moving the double-station punching die onto a die machine through a hoisting device, controlling a machine table template on the die machine to move downwards to be in contact with an upper die bottom plate, fixing the upper die bottom plate and the machine table template, and controlling an oil cylinder of the die machine to move downwards to extend into the upper die bottom plate for connection;

(2) moving the oil cylinder upwards to drive an upper die and a lower die of the die to separate, and mounting a casting to be punched on a lower die positioning block;

(3) the oil cylinder moves downwards to drive the upper die and the lower die to be matched, the pressure rod is attached to a casting to be punched, the punch is positioned inside a middle hole of the casting to be punched to punch the middle hole, meanwhile, the cutter block is positioned on the periphery of the casting to be punched to punch and trim rough edges of a water inlet and a parting line;

(4) the oil cylinder moves upwards to control the upper die and the lower die to be separated, the casting to be punched is clamped between the cutter block and the punch, and the casting to be punched is ejected out by the pressing rod, so that punching and trimming are completed.

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