CN115055566A

CN115055566A - Numerical control automatic stamping and bending device

Info

Publication number: CN115055566A
Application number: CN202210682264.4A
Authority: CN
Inventors: 杨美芳
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-06-15
Filing date: 2022-06-15
Publication date: 2022-09-16

Abstract

The invention relates to the technical field of stamping and bending equipment, in particular to a numerical control automatic stamping and bending device, which comprises a rack, wherein the top of the rack is fixedly connected with a die frame, the bottom of the die frame is fixedly connected with a lower die assembly, the top of the lower die assembly is provided with an upper die assembly, the top of the upper die assembly is provided with a first hydraulic cylinder, and one side of the die frame is provided with a cutting and feeding mechanism for cutting and feeding blanks; according to the invention, the blank is extruded and conveyed between the upper roller and the lower roller by arranging the cutting and feeding mechanism, the blank is guided to the top of the temporary storage groove through the guide piece, then when one end of the blank props against the top plate, the top plate rotates, and the inching switch is pressed down, so that the second hydraulic cylinder drives the upper cutter group to be matched with the lower cutter plate, the blank is cut off, the cut blank falls into the bottom of the temporary storage groove, the blank is pushed between the dies by driving the push plate through the feeding telescopic rod, and the blank is punched and bent for forming, thereby improving the continuous working efficiency of equipment and avoiding the danger during manual feeding.

Description

Numerical control automatic stamping and bending device

Technical Field

The invention relates to the technical field of stamping and bending equipment, in particular to a numerical control automatic stamping and bending device.

Background

The stamping is a forming processing method for applying external force to plates, strips, pipes, profiles and the like by a press machine and a die to cause the plates, the strips, the pipes, the profiles and the like to generate plastic deformation or separation, thereby obtaining workpieces (stamping parts) with required shapes and sizes.

The equipment of buckling of punching press today is when using, cuts out the shaping back with the stock usually, then through artifical material loading and material returned, this method is not only inefficient to adopt artifical material loading to have certain danger, and when equipment continuous operation, the equipment mould can take place the friction with the stock when buckling to the punching press, makes the mould generate heat, and the inconvenient fan of mould is hot, and is inconvenient to the lubrication of oiling to the mould, uses inconveniently.

Aiming at the problems in the prior art, the invention aims to provide a numerical control automatic stamping and bending device which has the advantages that a larger blank can be cut into small blanks suitable for a die, the die is automatically fed after the blanks are cut, the continuous working efficiency is improved, and the danger caused by manual feeding is prevented; can be through fluid inner loop in the mould when continuous use, for the mould cooling of continuous use, and through the osmosis to the mould surface oil impregnate, reduce the frictional force between the piece and the mould of buckling in the punching press when using for the mould fuel feeding.

Disclosure of Invention

In order to solve the above problems, the present invention adopts the following technical solutions.

A numerical control automatic stamping and bending device comprises a rack, wherein the top of the rack is fixedly connected with a die frame, the bottom of the die frame is fixedly connected with a lower die assembly, the top of the lower die assembly is provided with an upper die assembly, and the top of the upper die assembly is provided with a first hydraulic cylinder;

a cutting and feeding mechanism for cutting and feeding blanks is arranged on one side of the die frame, a material returning mechanism for returning formed materials is arranged on the other side of the die frame, and an oil supply assembly for supplying oil to equipment is arranged at the top of the frame;

the cutting and feeding mechanism comprises a temporary storage groove, a push plate, a feeding telescopic rod, an upper cutter set, a lower cutter plate, a guide piece, a support plate, a second hydraulic cylinder, an upper roller, a lower roller, a side plate, a top plate, a jogging switch and a reset spring, wherein the temporary storage groove is fixedly arranged at one end of the lower die assembly, the push plate is slidably connected at the bottom of the inner side of the temporary storage groove, the feeding telescopic rod is fixedly arranged at the bottom of the temporary storage groove, the output end of the feeding telescopic rod is fixedly connected at the bottom of one end of the push plate, the upper cutter set is movably arranged at the top of the temporary storage groove, the lower cutter plate is fixedly arranged at one side of the top of the temporary storage groove, the guide piece is fixedly arranged at one side of the top of the temporary storage groove, the support plate is fixedly connected at the top of the rack, the upper roller and the lower roller are both rotatably connected at the inner side of the top of the support plate, the second hydraulic cylinder is fixedly arranged at the side wall of the temporary storage groove, the side plate is fixedly connected at both sides of the temporary storage groove, the roof rotates to be connected inboard at the curb plate, the inching switch sets up in roof top one side, reset spring fixed mounting is in curb plate and roof junction.

Optionally, the upper die assembly comprises an upper die fixing plate and an upper die, the upper die fixing plate is fixedly connected to the bottom of the first hydraulic cylinder, and the upper die is fixedly connected to the bottom of the upper die fixing plate.

Optionally, the lower die assembly comprises a lower die fixing groove and a lower die, the bottom of the inner side of the die frame is fixedly installed on the lower die fixing groove, and the lower die is movably installed at the bottom of the lower die fixing groove.

Optionally, the material returning mechanism comprises a material returning part, a material returning telescopic rod and a material returning guide hopper, the material returning part is connected to the bottom of the upper die assembly in a sliding mode, the material returning telescopic rod is fixedly installed at the top of the upper die assembly, one end of the material returning part is fixedly installed at the output end of the material returning telescopic rod, the material returning guide hopper is fixedly connected to the lower die assembly, and the material returning guide hopper is fixedly installed at the bottom of one side of the upper die assembly.

Optionally, the oil supply unit includes oil tank and oil pump, the equal fixed mounting of oil tank and oil pump is at the frame top, the oil pump input passes through the pipe connection inside the oil tank.

Optionally, go up the knife tackle including cutter fixing plate, side slide bar and last cutting board, cutter fixing plate fixed mounting is at side slide bar top, side slide bar sliding connection is at the groove lateral wall of keeping in, go up cutting board fixed connection in cutter fixing plate bottom, just go up cutting board movable mounting at cutting board top down, second hydraulic cylinder output fixed connection is in side slide bar bottom.

Optionally, an oil inlet is formed in one end of each of the upper die and the lower die, an oil outlet is formed in one end of each of the upper die and the lower die, a circulating oil path is formed in each of the upper die and the lower die, and the oil inlet and the oil outlet are communicated with the circulating oil path in each of the upper die and the lower die.

Optionally, bolts are installed on the outer side of the upper die and the inner side of the lower die, one end of each bolt is fixedly installed on the inner sides of the internal circulation oil paths of the upper die and the lower die, and a PP cotton stick is fixedly connected to the axial position of each bolt.

Optionally, the oil inlet is connected to the output end of the oil pump through a pipeline, and the oil outlet is connected to the inside of the oil tank through a pipeline.

A using method of a numerical control automatic stamping and bending device specifically comprises the following steps;

s1: firstly, feeding a large blank between an upper roller and a lower roller from one side of the upper roller and the lower roller, and driving the upper roller and the lower roller to rotate through a motor so that the blank moves towards the inner side of a guide piece from the space between the upper roller and the lower roller;

s2: then, under the guiding action of the guiding piece, the blank continuously moves to one side of the top of the temporary storage groove by utilizing the action of the upper roller and the lower roller;

s3: then the blank continues to move, one end of the blank pushes the bottom of the top plate at the moment, so that the top plate starts to rotate at the position of the mounting shaft, and then the top protrusion of the top plate presses the inching switch until the inching switch is started;

s4: at the moment, the inching switch starts a second hydraulic cylinder, then the second hydraulic cylinder stretches, one end of the second hydraulic cylinder pushes the upper knife tackle assembly, the side sliding rod is utilized for limiting and guiding, then the cutter fixing plate is pulled to drive the upper knife board to move downwards, and at the moment, the upper knife board and the lower knife board are mutually sheared to cut off the blank;

s5: then, the cut blanks fall into the bottom of the temporary storage groove, the process is repeated continuously, the cut blanks are accumulated in the temporary storage groove, and meanwhile, a feeding telescopic rod fixed at the bottom of the temporary storage groove is used for driving a push plate to work, so that the cut blanks stored at the bottommost of the temporary storage groove are pushed to a position between the molds by the push plate;

s6: then, the upper die assembly is driven by the first hydraulic cylinder to be combined with the lower die assembly, the blank is punched, bent and formed, the material returning telescopic rod of the material returning mechanism is used for pushing the material returning part, the formed part is demoulded by the material returning part, and the formed part is guided and collected uniformly by the material returning guide hopper;

s7: the step is repeated and is carried out the shaping of buckling in succession, utilize the oil pump to carry the inside fluid of oil tank to the inside oil circuit of cope mould and bed die through the pipeline by the oil inlet at the in-process that the punching press was buckled, then inside the oil tank was arranged into through the pipeline to the oil-out, simultaneously, when fluid passes through the inside oil circuit of cope mould and bed die, bolt center and cope mould and the inside oil circuit of bed die are linked together, utilize the cotton stick of PP to carry out the free infiltration, make fluid permeate to cope mould and bed die surface, lubricate the mould.

Compared with the prior art, the invention has the advantages that:

(1) this scheme is tailor feed mechanism including keeping in the groove through the setting, the push pedal, the pay-off telescopic link, go up the knife tackle, the lower cutter plate, the guide, the backup pad, the second hydraulic cylinder, go up the roller, the lower roll, the curb plate, the roof, inching switch and reset spring, the punching press stock rotates through last roller and lower roll, extrude the conveying between the two, lead to the groove top of keeping in through the guide, then when stock one end withstands the roof, the inching switch is pressed down to the roof rotation top, make the second hydraulic cylinder drive the knife tackle and cooperate with the lower cutter plate, cut off the stock, the stock after cutting off falls into the tank bottom portion of keeping in, drive the push pedal through the pay-off telescopic link and push away the stock between the mould, the shaping of punching press bending, and then the continuous operation efficiency of equipment has been improved, and danger when avoiding artifical material loading.

(2) According to the scheme, the material returning mechanism comprises the material returning telescopic rod and the guide hopper, after the blank is punched and bent by the die, the formed part is retained on the upper die, the material returning telescopic rod drives the material returning part to push forwards at the moment, so that the formed punched and bent part retained on the upper die is separated from the outer wall of the upper die, and then one end of the guide hopper falls down to be collected in a unified manner, so that the danger of manual material returning is avoided, and the work efficiency is improved by continuous material returning;

(3) according to the scheme, the oil supply assembly comprises the oil tank and the oil pump, oil in the oil tank is supplied to the interior of the mold through the oil inlet and the oil outlet which are formed in the upper mold and the lower mold by the oil pump, so that oil circulates in the interior of the upper mold and the lower mold, the upper mold and the lower mold can be cooled in the continuous use process, the heat generated by the molds due to continuous work is reduced, and the service life of the molds is prolonged;

(4) this scheme is including oil tank and oil pump through setting up fuel feeding unit, utilize oil pump to carry out the fuel feeding to the mould inside through oil inlet and the oil-out that last mould and bed die set up with the oil in the oil tank, and at the surface mounting bolt of last mould and bed die, the cotton stick of PP of high density is used at the bolt center, the one end of bolt communicates to the inside oil circuit of mould, make in fluid circulation cooling, carry out infiltration fluid to the mould surface through the osmosis, scribble the oil to the mould surface, reducible blank punching press when using is bent with the frictional force of mould, and then further improve the life of mould.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, without inventive work, other drawings can be obtained from the drawings

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

FIG. 2 is a schematic view of another embodiment of the present invention;

FIG. 3 is a schematic structural diagram of an upper module according to the present invention;

FIG. 4 is a schematic structural diagram of a lower module according to the present invention;

FIG. 5 is a schematic diagram of a first view of a temporary storage tank according to the present invention;

FIG. 6 is a schematic diagram of a second view of a temporary storage tank according to the present invention;

FIG. 7 is a schematic structural view of an upper blade set according to the present invention;

FIG. 8 is a schematic view of the structure of the lower cutting plate according to the present invention;

FIG. 9 is a schematic view of the construction of the guide member of the present invention;

FIG. 10 is a schematic structural view of a material returning mechanism according to the present invention;

FIG. 11 is a schematic view of the construction of the bolt of the present invention;

fig. 12 is a schematic mechanism diagram of the top plate of the present invention.

The reference numbers in the figures illustrate:

1. a frame; 2. a mold frame; 3. an upper die assembly; 301. an upper die fixing plate; 302. an upper die; 4. a lower die assembly; 401. a lower die fixing groove; 402. a lower die; 5. a first hydraulic cylinder; 6. a temporary storage tank; 601. pushing a plate; 602. a feeding telescopic rod; 7. an upper cutter set; 701. a cutter fixing plate; 702. a side slide bar; 703. an upper knife board; 8. a lower knife board; 9. a guide member; 10. a support plate; 11. a second hydraulic cylinder; 12. upper roll; 13. a lower roll; 14. an oil tank; 15. an oil pump; 16. returning the material piece; 17. a material returning telescopic rod; 18. a bolt; 19. a PP cotton swab; 20. a side plate; 21. a top plate; 22. a jog switch; 23. a return spring; 24. an oil inlet; 25. an oil outlet; 26. the material returning guide hopper.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the 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.

Referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9, and fig. 12, the present invention provides a numerical control automatic stamping and bending apparatus, including a frame 1, a die frame 2 fixedly connected to the top of the frame 1, a lower die assembly 4 fixedly connected to the bottom of the die frame 2, an upper die assembly 3 arranged on the top of the lower die assembly 4, and a first hydraulic cylinder 5 arranged on the top of the upper die assembly 3; the rack 1 is used for mounting various components of equipment, the die frame 2 is used for mounting an upper die component 3 and a lower die component 4, a die for stamping and bending is mounted in the die components, and a first hydraulic cylinder 5 adopts the prior art and is used for stamping and bending a blank by lifting and falling the die.

A cutting and feeding mechanism for cutting and feeding blanks is arranged on one side of the die frame 2, a material returning mechanism for returning formed materials is arranged on the other side of the die frame 2, and an oil supply assembly for supplying oil to equipment is arranged at the top of the frame 1; the effect that the feed mechanism was tailor in one side setting of mould frame 2 is used for, cut into the massive stock when using and be fit for the stock that is used for the mould punching press fritter of bending, then will be applicable to the little stock propelling movement of mould between to the mould, then bend the shaping with the stock punching press, the effect that sets up material returned mechanism is used for bending fashioned punching press and is released the material returned by the mould on by the mould, the effect that sets up oil supply unit is to carry out the oil supply to mould inside, dispel the heat and lubricate the mould.

The cutting and feeding mechanism comprises a temporary storage groove 6, a push plate 601, a feeding telescopic rod 602, an upper cutter group 7, a lower cutter plate 8, a guide part 9, a support plate 10, a second hydraulic cylinder 11, an upper roller 12, a lower roller 13, a side plate 20, a top plate 21, a inching switch 22 and a reset spring 23, wherein the temporary storage groove 6 is fixedly arranged at one end of a lower die assembly 4, the push plate 601 is slidably connected at the bottom of the inner side of the temporary storage groove 6, the feeding telescopic rod 602 is fixedly arranged at the bottom of the temporary storage groove 6, the output end of the feeding telescopic rod 602 is fixedly connected at the bottom of one end of the push plate 601, the upper cutter group 7 is movably arranged at the top of the temporary storage groove 6, the lower cutter plate 8 is fixedly arranged at one side of the top of the temporary storage groove 6, the guide part 9 is fixedly arranged at one side of the top of the temporary storage groove 6, the support plate 10 is fixedly connected at the top of a machine frame 1, the upper roller 12 and the lower roller 13 are both rotatably connected at the inner side of the top of the support plate 10, the second hydraulic cylinder 11 is fixedly arranged at the side wall of the temporary storage groove 6, the side plates 20 are fixedly connected to two sides of the temporary storage groove 6, the top plate 21 is rotatably connected to the inner sides of the side plates 20, the inching switch 22 is arranged on one side of the top plate 21, and the return spring 23 is fixedly installed at the connecting position of the side plates 20 and the top plate 21; the temporary storage groove 6 is used for storing cut small blanks, the inner side of the temporary storage groove 6 is a groove suitable for the shapes of the small blanks, the push plate 601 is arranged and used for pushing the push plate 601 to move by utilizing the telescopic feeding rod 602 arranged at the bottom of the temporary storage groove 6 to push the cut blanks falling into the bottom of the temporary storage groove 6 to be pushed to a position between dies through the output end of the telescopic feeding rod 602 arranged at the bottom of the temporary storage groove 6, specifically, a notch is formed at the bottom of the temporary storage groove 6 through a drawing and is arranged at one end of the die and tightly connected with one end of the die, so that the blanks are pushed to the position between the dies, the upper cutter group 7 and the lower cutter plate 8 are arranged and used for cutting, the large blanks are cut into required sizes, the guide 9 is arranged and used for enabling two sides of the blanks to pass through the inner side of the guide 9 when the raw materials are pushed to one side of the temporary storage groove 6, can prevent the stock front end off tracking when the conveying, the effect that sets up second pneumatic cylinder 11 is used for driving upper slitter group 7 up-and-down motion, make its cooperation lower cutter plate 8 cut out, wherein go up roller 12 and lower roll 13 and drive its rotation through the motor, wherein inching switch 22 is used for controlling 11 work of second pneumatic cylinder, equipment sets up by the PLC programmable controller who is used for controlgear work, and each subassembly work of controller control, inching switch 22 presses and can make 11 work of second pneumatic cylinder.

In some embodiments, referring to fig. 3, the upper mold assembly 3 includes an upper mold fixing plate 301, and an upper mold 302, the upper mold fixing plate 301 is fixedly connected to the bottom of the first hydraulic cylinder 5, and the upper mold 302 is fixedly connected to the bottom of the upper mold fixing plate 301; the upper die fixing plate 301 is provided for integrally fixing the upper die assembly 3 to the bottom of the first hydraulic cylinder 5, and the upper die 302 is provided for punching a blank.

In some embodiments, referring to fig. 4, the lower mold assembly 4 includes a lower mold fixing groove 401 and a lower mold 402, the lower mold fixing groove 401 is fixedly installed at the bottom of the inside of the molding frame 2, and the lower mold 402 is movably installed at the bottom of the lower mold fixing groove 401; the lower mold fixing groove 401 is provided to fixedly install the lower mold 402, and the lower mold 402 is movably installed at the bottom of the lower mold fixing groove 401.

In some embodiments, referring to fig. 3 and 10, the material returning mechanism includes a material returning member 16, a material returning telescopic rod 17 and a material returning guide hopper 26, the material returning member 16 is slidably connected to the bottom of the upper mold assembly 3, the material returning telescopic rod 17 is fixedly installed on the top of the upper mold assembly 3, one end of the material returning member 16 is fixedly installed at the output end of the material returning telescopic rod 17, the material returning guide hopper 26 is fixedly connected to the lower mold assembly 4, and the material returning guide hopper 26 is fixedly installed at the bottom of one side of the upper mold assembly 3; the effect that sets up material returned mechanism is used for the equipment material returned, the effect of material returned 16 is that the punching press that is used for promoting after the shaping is bent breaks away from the mould, the effect that sets up material returned telescopic link 17 is used for driving material returned 16 and slides in the one end of last module component 3, and then promotes the formed part and falls down, the effect that sets up material returned direction fill 26 is, when using, material returned telescopic link 17 drives material returned 16 and pushes away the formed part and fall, the formed part falls into material returned direction fill 26 surface and unifies the direction and collect.

In some embodiments, referring to fig. 1 and 2, the oil supply assembly includes an oil tank 14 and an oil pump 15, the oil tank 14 and the oil pump 15 are both fixedly mounted on the top of the frame 1, and an input end of the oil pump 15 is connected inside the oil tank 14 through a pipeline; the oil tank 14 is provided for storing oil for cooling and lubrication, and the oil pump 15 is provided for delivering the oil.

In some embodiments, referring to fig. 7, the upper knife group 7 includes a knife fixing plate 701, a side sliding rod 702 and an upper knife plate 703, the knife fixing plate 701 is fixedly installed on the top of the side sliding rod 702, the side sliding rod 702 is slidably connected to the side wall of the temporary storage slot 6, the upper knife plate 703 is fixedly connected to the bottom of the knife fixing plate 701, the upper knife plate 703 is movably installed on the top of the lower knife plate 8, and the output end of the second hydraulic cylinder 11 is fixedly connected to the bottom of the side sliding rod 702; the effect of setting up tool fixing plate 701 is used for fixed cutting board 703, and sideslip pole 702, it is concrete, side slide bar 702 sets up the slider through the lateral wall at groove 6 of keeping in, sideslip pole 702 slides in the inboard of groove 6 of keeping in, can carry out spacing direction when using, wherein the one end that side slide bar 702 kept away from tool fixing plate 701 is fixed with the connecting block that is used for installing second pneumatic cylinder 11, second pneumatic cylinder 11 is fixed at the lateral wall of groove 6 of keeping in, promote the one end of side slide bar 702 through the output, and then drive tool fixing plate 701 up-and-down motion, then drive cutting board 703 and lower cutting board 8 cooperation and tailor.

In some embodiments, referring to fig. 3 and 4, an oil inlet 24 is formed at one end of each of the upper mold 302 and the lower mold 402, an oil outlet 25 is formed at one end of each of the upper mold 302 and the lower mold 402, a circulating oil path is formed inside each of the upper mold 302 and the lower mold 402, and the oil inlet 24 and the oil outlet 25 are both communicated with the circulating oil path inside each of the upper mold 302 and the lower mold 402; the oil inlet 24 and the oil outlet 25 formed in the upper die 302 and the lower die 402 are used for conveying oil to the interior of the dies, specifically, an oil circulation oil path is formed in the upper die 302 and the lower die 402 and communicated with the oil inlet 24 and the oil outlet 25, the oil enters from the oil inlet 24 and then is discharged from the oil outlet 25, and the dies can be cooled by the oil.

In some embodiments, referring to fig. 3, 4 and 11, bolts 18 are installed on the outer side of the upper die 302 and the inner side of the lower die 402, one end of each bolt 18 is fixedly installed on the inner side of a circulating oil path inside the upper die 302 and the lower die 402, a PP cotton swab 19 is fixedly connected to the axial position of each bolt 18, an oil inlet 24 is connected to the output end of the oil pump 15 through a pipeline, and an oil outlet 25 is connected to the inside of the oil tank 14 through a pipeline; install oily a plurality of bolt 18 on upper die 302 and lower die 402, and the one end of bolt 18 communicates to the inside oil circuit of mould, and set up PP cotton swab 19 at bolt 18 center, the effect that sets up like this is, PP cotton swab 19 has certain permeability, when fluid passes through the inside oil circuit of mould through oil pump 15, and the inside pressure value of oil circuit is lower, can make fluid slowly permeate to the surface of upper die 302 or lower die 402 by PP cotton swab 19, can lubricate the mould when using to carry out the punching press bending to the stock.

The working process and principle of the invention are as follows: firstly, a large blank is sent between an upper roller 12 and a lower roller 13 from one side of the upper roller 12 and the lower roller 13, the upper roller 12 and the lower roller 13 are driven to rotate by a motor, and the blank moves towards the inner side of a guide part 9 from the space between the upper roller 12 and the lower roller 13; then, under the guiding action of the guiding piece 9, the blank continuously moves to one side of the top of the temporary storage groove 6 by the action of the upper roller 12 and the lower roller 13; then the blank continues to move, at the moment, one end of the blank pushes the bottom of the top plate 21, so that the top plate 21 starts to rotate at the position of the installation shaft, and then the top protrusion of the top plate 21 presses the inching switch 22 until the inching switch 22 is started; at this time, the inching switch 22 starts the second hydraulic cylinder 11, then the second hydraulic cylinder 11 stretches, one end of the second hydraulic cylinder 11 pushes the upper knife group 7 assembly, the side sliding rod 702 is used for limiting and guiding, then the knife fixing plate 701 is pulled to drive the upper knife plate 703 to move downwards, at this time, the upper knife plate 703 and the lower knife plate 8 are mutually sheared, and the blank is cut off; then, the cut blanks fall into the bottom of the temporary storage groove 6, the process is repeated continuously, the cut blanks are accumulated in the temporary storage groove 6, and meanwhile, a feeding telescopic rod 602 fixed at the bottom of the temporary storage groove 6 is used for driving a push plate 601 to work, so that the push plate 601 pushes the cut blanks stored at the bottommost of the temporary storage groove 6 to a position between the molds, and the danger of manual feeding is avoided through mechanical feeding; then, the upper die assembly 3 is driven by the first hydraulic cylinder 5 to be combined with the lower die assembly 4, the blank is punched, bent and formed, the material returning telescopic rod 17 of the material returning mechanism is used for pushing the material returning piece 16, the formed piece is demoulded by the material returning piece 16, the danger of manual demoulding is avoided by mechanical demoulding, and the material returning guide hopper 26 is used for guiding and collecting uniformly; the steps are repeated to carry out continuous stamping and bending forming, the continuous working is realized, the working efficiency is improved, in the stamping and bending process, oil in the oil tank 14 is conveyed to oil circuits inside the upper die 302 and the lower die 402 through the oil inlet 24 by the oil pump 15 through a pipeline, then the oil outlet 25 is discharged into the oil tank 14 through a pipeline, the circulation is carried out inside the die, the temperature of the die can be reduced, and the temperature generated in the continuous working process is reduced.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides an automatic punching press bending device of numerical control, includes frame (1), frame (1) top fixedly connected with mould frame (2), mould frame (2) bottom fixedly connected with lower module (4), lower module (4) top is provided with upper die assembly (3), upper die assembly (3) top is provided with first pneumatic cylinder (5), its characterized in that:

a cutting and feeding mechanism for cutting and feeding blanks is arranged on one side of the die frame (2), a material returning mechanism for returning formed materials is arranged on the other side of the die frame (2), and an oil supply assembly for supplying oil to equipment is arranged at the top of the frame (1);

the cutting and feeding mechanism comprises a temporary storage groove (6), a push plate (601), a feeding telescopic rod (602), an upper cutter group (7), a lower cutter plate (8), a guide piece (9), a support plate (10), a second hydraulic cylinder (11), an upper roller (12), a lower roller (13), a side plate (20), a top plate (21), a inching switch (22) and a reset spring (23), wherein the temporary storage groove (6) is fixedly installed at one end of the lower die assembly (4), the push plate (601) is slidably connected at the inner bottom of the temporary storage groove (6), the feeding telescopic rod (602) is fixedly installed at the bottom of the temporary storage groove (6), the output end of the feeding telescopic rod (602) is fixedly connected at the bottom of one end of the push plate (601), the upper cutter group (7) is movably installed at the top of the temporary storage groove (6), the lower cutter plate (8) is fixedly installed at one side of the top of the temporary storage groove (6), the guide piece (9) is fixedly installed at one side of the top of the temporary storage groove (6), backup pad (10) fixed connection is at frame (1) top, it is inboard in backup pad (10) top all to rotate connection to go up roller (12) and lower roll (13), second hydraulic cylinder (11) fixed mounting is in groove (6) lateral wall of keeping in, curb plate (20) fixed connection is in groove (6) both sides of keeping in, roof (21) rotate to be connected in curb plate (20) inboardly, inching switch (22) set up in roof (21) top one side, reset spring (23) fixed mounting is in curb plate (20) and roof (21) junction.

2. The numerical control automatic stamping and bending device according to claim 1, characterized in that: go up mould subassembly (3) including last mould fixed plate (301) and last mould (302), last mould fixed plate (301) fixed connection is in first pneumatic cylinder (5) bottom, go up mould (302) fixed connection in last mould fixed plate (301) bottom.

3. The numerical control automatic stamping and bending device according to claim 2, characterized in that: the lower die assembly (4) comprises a lower die fixing groove (401) and a lower die (402), the bottom of the inner side of the die frame (2) is fixedly installed in the lower die fixing groove (401), and the lower die (402) is movably installed at the bottom of the lower die fixing groove (401).

4. The numerical control automatic stamping and bending device according to claim 1, characterized in that: the material returning mechanism comprises a material returning part (16), a material returning telescopic rod (17) and a material returning guide hopper (26), wherein the material returning part (16) is connected to the bottom of the upper die assembly (3) in a sliding mode, the material returning telescopic rod (17) is fixedly installed at the top of the upper die assembly (3), one end of the material returning part (16) is fixedly installed at the output end of the material returning telescopic rod (17), the material returning guide hopper (26) is fixedly connected to the lower die assembly (4), and the material returning guide hopper (26) is fixedly installed at the bottom of one side of the upper die assembly (3).

5. The numerical control automatic punching and bending device according to claim 3, characterized in that: the oil supply assembly comprises an oil tank (14) and an oil pump (15), wherein the oil tank (14) and the oil pump (15) are fixedly mounted at the top of the rack (1), and the input end of the oil pump (15) is connected to the inside of the oil tank (14) through a pipeline.

6. The numerical control automatic stamping and bending device according to claim 1, characterized in that: go up knife tackle (7) including cutter fixing plate (701), side slide bar (702) and last cutting board (703), cutter fixing plate (701) fixed mounting is at side slide bar (702) top, side slide bar (702) sliding connection is at groove (6) lateral wall of keeping in, go up cutting board (703) fixed connection in cutter fixing plate (701) bottom, just go up cutting board (703) movable mounting at cutting board (8) top down, second hydraulic cylinder (11) output fixed connection is in side slide bar (702) bottom.

7. The numerical control automatic stamping and bending device according to claim 5, wherein: the oil inlet (24) is formed in one end of each of the upper die (302) and the lower die (402), the oil outlet (25) is formed in one end of each of the upper die (302) and the lower die (402), circulating oil paths are formed in the inner portions of the upper die (302) and the lower die (402), and the oil inlet (24) and the oil outlet (25) are communicated with the circulating oil paths in the inner portions of the upper die (302) and the lower die (402).

8. The numerical control automatic punching and bending device according to claim 3, characterized in that: bolts (18) are installed on the outer side of the upper die (302) and the inner side of the lower die (402), one end of each bolt (18) is fixedly installed on the inner sides of internal circulation oil ways of the upper die (302) and the lower die (402), and a PP cotton swab (19) is fixedly connected to the axial position of each bolt (18).

9. The numerical control automatic punching and bending device according to claim 7, characterized in that: the oil inlet (24) is connected to the output end of the oil pump (15) through a pipeline, and the oil outlet (25) is connected to the inside of the oil tank (14) through a pipeline.

10. The use method of the numerical control automatic stamping and bending device according to any one of claims 1 to 9, wherein: the method specifically comprises the following steps;

s1: firstly, a large blank is sent between an upper roller (12) and a lower roller (13) from one side of the upper roller (12) and the lower roller (13), and the upper roller (12) and the lower roller (13) are driven to rotate by a motor, so that the blank moves towards the inner side of a guide part (9) from the space between the upper roller (12) and the lower roller (13);

s2: then, under the guiding action of a guiding piece (9), the blank continuously moves to one side of the top of the temporary storage groove (6) by utilizing the action of an upper roller (12) and a lower roller (13);

s3: then the blank continues to move, one end of the blank pushes the bottom of the top plate (21) at the moment, so that the top plate (21) starts to rotate at the position of the mounting shaft, and then the top protrusion of the top plate (21) can press the inching switch (22) until the inching switch (22) is started;

s4: at the moment, the inching switch (22) starts the second hydraulic cylinder (11), then the second hydraulic cylinder (11) stretches, one end of the second hydraulic cylinder (11) pushes the upper knife group (7) assembly, the side sliding rod (702) is used for limiting and guiding, then the knife fixing plate (701) is pulled to drive the upper knife board (703) to move downwards, at the moment, the upper knife board (703) and the lower knife board (8) are mutually sheared, and the blank is cut off;

s5: then, the cut blanks fall into the bottom of the temporary storage groove (6), the process is repeated continuously, the cut blanks are accumulated in the temporary storage groove (6), and meanwhile, a feeding telescopic rod (602) fixed at the bottom of the temporary storage groove (6) is used for driving a push plate (601) to work, so that the push plate (601) pushes the cut blanks stored at the bottommost of the temporary storage groove (6) to a position between the molds;

s6: then, an upper die assembly (3) is driven by a first hydraulic cylinder (5) to be combined with a lower die assembly (4), the blank is punched, bent and formed, a material returning telescopic rod (17) of a material returning mechanism pushes a material returning piece (16), the formed piece is demoulded by the material returning piece (16), and the formed piece is guided and collected uniformly by a material returning guide hopper (26);

s7: and repeating the steps to perform continuous stamping and bending forming, conveying oil in the oil tank (14) to oil circuits in the upper die (302) and the lower die (402) through a pipeline by using the oil pump (15) in the stamping and bending process, then discharging an oil outlet (25) into the oil tank (14) through a pipeline, and meanwhile, when the oil passes through the oil circuits in the upper die (302) and the lower die (402), communicating the center of the bolt (18) with the oil circuits in the upper die (302) and the lower die (402), and performing free penetration by using the PP cotton rod (19) to ensure that the oil penetrates into the surfaces of the upper die (302) and the lower die (402) to lubricate the dies.