CN110355258A - A kind of stamping die - Google Patents
A kind of stamping die Download PDFInfo
- Publication number
- CN110355258A CN110355258A CN201910658247.5A CN201910658247A CN110355258A CN 110355258 A CN110355258 A CN 110355258A CN 201910658247 A CN201910658247 A CN 201910658247A CN 110355258 A CN110355258 A CN 110355258A
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- Prior art keywords
- core rod
- die holder
- workpiece
- mounting base
- stationary core
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
- B21D28/04—Centering the work; Positioning the tools
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
- B21D28/14—Dies
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Accessories And Tools For Shearing Machines (AREA)
- Punching Or Piercing (AREA)
Abstract
A kind of stamping die is disclosed, the present invention solves the problems, such as the punching press severing of ratio-frequency welding rectangular tube, and cutter and the floating core rod in workpiece form upper cutting edge；Stationary core rod and the feeding port of feeding body form lower cutting edge, after workpiece enters defined position from feeding port, upper and lower two secondary cutting edges are sheared simultaneously, then workpiece is unloaded from stationary core rod by device for discharging, punching operation can be efficiently carried out very much, positioning accuracy is high, at low cost, human cost is significantly saved, the features such as the operation is stable.
Description
Technical field
The present invention relates to processing and manufacturing fields to be more particularly related to a kind of stamping die.
Background technique
Mold is technological equipment common in industrial products production, it passes through certain mode with the special shape of its own
Raw material are made to shape (molding).In modern product production, mold is since its is high in machining efficiency, interchangeability is good, saves material
Feature, application are more and more extensive.
With rapid development of economy, demand of all trades and professions to steel is continuously increased, and stainless steel is excellent anti-corrosion with its
Property, good mechanical property and beauty appearance and be widely used in oil country tubular good, space flight and aviation, auto industry, engineering construction
And the industries such as food machinery.In recent years, ratio-frequency welding rectangular tube is as typical stainless steel welding steel, because its intensity is high, bending resistant section
Many irreplaceable advantages such as modulus is big, be easily assembled and consolidate, beauty, are widely used in vehicle, subway, building, ship
The fields such as oceangoing ship.
In ratio-frequency welding rectangular tube punching press punching production, the quality of the ratio-frequency welding rectangular tube after being punched for guarantee punching press is simultaneously most
The possible short production cycle, it need to ensure the reasonability of mould structure design and suitable stamping process parameters.For high frequency welding torch
For shape pipe, punching press severing is substantially lossless, can reduce cost in this way；Secondly the high production efficiency of stamping die, existing skill
Art CN207343554U discloses a kind of stainless steel tube welding nozzle stamping die, however the mold is still a kind of common sanction
Disconnected device, can not be accurately positioned and discharging, prior art CN204866891U disclose a kind of stainless steel tube molding machine, although
The prior art improves positional accuracy, but operation is relative complex, only shaping mechanism, can not effectively rush to pipe fitting
It cutting out, prior art CN104368670A discloses a kind of stainless steel tube welding nozzle stamping die, but the technical pattern is complicated,
Tubular structure cannot be effectively punched, therefore urgently need a kind of new and effective stamping die.
Summary of the invention
Therefore, in view of the shortcomings of the prior art, providing example of the invention to substantially solve since correlation is led
One or more problems caused by the limitation and disadvantage in domain, safety and reliability increase substantially, and effectively play guarantor
Protect the effect of equipment.
According to technical solution provided by the invention, stamping die includes lower die holder, upper die holder, and lower die holder and upper die holder pass through
Four guide post connections, upper die holder can be slided along guide post to lower die holder, and lower die holder is equipped with charging conduit, and the side of lower die holder is set
There is feeding port mounting base, feeding port mounting base is equipped with feeding body, and feeding body has feeding port, and upper die holder lower surface, which is equipped with, determines core
Mounting base, determines core mounting base equipped with a groove, in the groove on stationary core rod is installed, the lower part for determining core mounting base is also set
Have a positioning block, locating piece is located at the underface of stationary core rod, determine to be additionally provided in core mounting base through port, stationary core rod it is upper
Two semi-circular grooves are opened in portion and lower part respectively, and a recess is also opened among the lower part of stationary core rod, and upper die holder lower surface is additionally provided with
Cutter mounting rack, cutter mounting rack are equipped with cutter, are additionally provided with a block on lower die holder, and stamping die also has device for discharging,
Device for discharging includes upper and lower two groups of discharge components, and every group of discharge component includes two and unload charge bar, and upper and lower two groups of discharge components can
It is pierced by from through port, each unloads and be additionally provided with return spring on charge bar, wherein four charge bars that unload can be corresponding with four
The cooperation of semi-circular groove, four are unloaded charge bar and are connected on two vertical plates, are oppositely arranged on two vertical plates, are connected between two vertical plates
Have an axis, the centre of axis is equipped with axle sleeve, and the both ends of axis are equipped with fixed guide plate, axle sleeve and block cooperate and be used to control unload charge bar to
The time of preceding release is additionally provided with die shank on upper die holder, and upper die holder is connected on press ram by die shank.
Further, workpiece to be punched is tubular structure, is equipped with a floating core rod in workpiece, floating core rod can be in work
Free to slide in part, floating core rod through the iron staff of workpiece tail portion by fixing, the ruler of the size of floating core rod than stationary core rod
It is very little bigger.
Further, cutter and the floating core rod in workpiece form upper cutting edge；Under stationary core rod and feeding body composition
Cutting edge, after workpiece enters defined position from feeding port, upper and lower two secondary cutting edges are sheared simultaneously, then by device for discharging by work
Part is unloaded from stationary core rod.
Further, feeding port mounting base has intilted inclined-plane, and feeding port mounting base is welded on lower die holder.
Further, determine to be respectively equipped with two corresponding threaded holes in the groove of core mounting base and on stationary core rod, be used in combination
Hexagon socket head cap screw connection.
Further, after stationary core rod is fully inserted into groove, residue length subtract positioning block length be exactly equal to punching press after
Workpiece radical length.
Further, the center of stationary core rod and the center of feeding port are in sustained height, and cutter mounting rack is in upper die holder
Position is corresponding with feeding port, and the position for determining core mounting base is corresponding with the position of cutter mounting rack, and the two distance is solid
The length for determining plug subtracts the depth of groove and the width of cutter mounting rack.
Further, the contact surface of block and axis is inclined-plane.
The present invention solves the problems, such as the punching press severing of ratio-frequency welding rectangular tube, cutter and the floating core rod composition in workpiece
Upper cutting edge；Stationary core rod and the feeding port of feeding body form lower cutting edge, after workpiece enters defined position from feeding port, on
Lower two secondary cutting edge is sheared simultaneously, is then unloaded workpiece from stationary core rod by device for discharging, can efficiently be rushed very much
The features such as press operation, positioning accuracy is high, at low cost, the operation is stable.
Detailed description of the invention
Fig. 1 is stamping die overall schematic of the invention.
Fig. 2 is stamping die perspective view of the explosion of the invention.
Fig. 3 is stamping die detailed structure schematic diagram of the invention.
Fig. 4 is stamping die details perspective view of the explosion of the invention.
Fig. 5 is stationary core rod operation schematic diagram of the invention.
Fig. 6 is floating core rod operation schematic diagram of the invention.
Fig. 7 is feeding body structural schematic diagram of the invention.
Fig. 8 is stationary core rod structural schematic diagram of the invention.
Fig. 9 is floating core rod structural schematic diagram of the invention.
Figure 10 is cutter structure schematic diagram of the invention.
Figure 11 is feeding port mounting base structural schematic diagram of the invention.
Figure 12 determines core mounting base structural schematic diagram for of the invention.
Figure 13 unloads charge bar structural schematic diagram for of the invention.
Figure 14 is block operation schematic diagram of the invention.
Figure 15 is die shank structural schematic diagram of the invention.
Specific embodiment
The present invention is further explained in the light of specific embodiments.
Below with reference to specific embodiment shown in the drawings, the present invention will be described in detail.But these embodiments are simultaneously
The present invention is not limited, structure that those skilled in the art are made according to these embodiments, method or functionally
Transformation is included within the scope of protection of the present invention.
With reference to the accompanying drawing and specific embodiment is further described application principle of the invention.For high frequency welding steel
Speech, it is desirable that in claimed range, stamping die according to the present invention can guarantee length steel pipe completely after severance.But
It is steel pipe is hollow structure, in punching press, steel pipe can generate depressed deformation, and deflection is very big, not can guarantee subsequent shaping work
Skill is normally carried out, and part is indeformable after severance or deflection is smaller in order to control, and should have a stationary core rod in part,
Biggish deformation not to occur after keeping cutting parts.
Although part shape is guaranteed, depressed deformation can be also generated close to cut-off parts, affects subsequent production
Progress, therefore also need to be put into a floating core rod in steel pipe, which can be free to slide in steel pipe.
The stamping die is as shown in Figure 3.The mold is made of two sets of cutting edges, mounted in the cutter of upper die holder and in steel pipe
Floating core rod form upper cutting edge；Stationary core rod mounted in upper die holder and the feeding body mounted in lower die holder form lower cutting edge.Work as steel
Pipe is entered from feeding port after the defined position of locating piece, and upper and lower two secondary cutting edges are sheared simultaneously, then by shedding mechanism by work
Part is unloaded from stationary core rod.
The determination of Center of Pressure:
Mould's Pressure Center refers to the position of each punch-out stamping press resultant force when punching press.In order to ensure press machine and mold
It works normally, the center of the Center of Pressure and press ram that should make punch die coincides.For having the stamping die of die shank, pressure
Center should pass through the axial line of die shank.Otherwise punch die and press ram can be made to generate eccentric load, made between sliding block and guide rail
Excessive abrasion is generated, mold guide elements accelerated wear test reduces the service life of mold and press machine.
The Center of Pressure of punch die can be determined by following principles:
1. the Center of Pressure of the single blanking part of symmetric shape, punch die is exactly the geometric center of blanking part, when being punched straightway,
Center of Pressure is located at the midpoint of straightway.
2. workpiece shapes are identical and distributing position is symmetrical, the Center of Pressure of punch die and the symmetrical centre of part coincide.
3. be punched the part of complex-shaped part or more punch-pin, Center of Pressure can be asked by Analytic Calculation
Out, when steel pipe cutting parts, under blanking pressure effect on it on symmetrical two sides, so Pressure Center of Blanking Die is exactly the side
Midpoint.
For this stamping die, requirement with higher for blanking pressure, the purpose for calculating blanking pressure is rationally
Selection press machine and design mold.Blanking pressure refers to the maximum shear resistance in blanking process, it is as upper die holder is cut
Enter the depth of material and change, when material has reached shear strength, just cracks and material is separated from each other, rushing at this time
Cut out power maximum value.Selection press machine is exactly to calculate by blanking pressure maximum, force.
The cutting of the ratio-frequency welding rectangle tube components may be summarized to be three phases.Two parallel planes above and below first stage part
It is in contact with cutter；When second stage is that cutter is switched at part fillet, shearing force size can change；Phase III is
Occur in a distance of part both ends very little, cutter no longer generates shear action to part at this time, but generates a drawing
Stretch breaks part.
Therefore for press machine, the selection of press machine will be according to production batch, process and the property of stamping parts
And the requirements such as size, shape, precision of stamping parts carry out.The ratio-frequency welding rectangle tube components of the application are little, required precision phase
To suitable, it is desirable that produce in enormous quantities, production efficiency wants high, comprehensively considers optional Open Bank Machinery Press.From raising equipment
The service life of work rigidity, the precision of stamping parts and extension equipment sets out, it is desirable that place capacity has larger residue.For the application
Speech, equipment will there are 30%~40% surpluses, so press tonnage is preferably not less than 247KN.The dress of press machine is required simultaneously
Mould height has to be larger than mold total height.Therefore the present invention selects the open-type inclinable press of 250KN, parameter see the table below.
| Project | Unit | Value |
| Nominal pressure | kN | 250 |
| Nominal pressure stroke | mm | 6 |
| Slider stroke | mm | 80 |
| Slider stroke number | Beat/min | 100 |
| Maximum die set height | mm | 250 |
| Height of packing compact regulated quantity | mm | 70 |
| Center is to lathe bed distance | mm | 190 |
| Column spacing | mm | 260 |
| Bed dimension | mm | 560×360 |
| Workbench pore size | mm | φ180 |
| Die shank pore size | mm | Φ50×70 |
| Working plate thickness | mm | 70 |
| Inclination angle | Deg | 30° |
The selection of mould bases
Due to the demand that the bracket of die assembly of the invention needs to adapt to produce in enormous quantities, so the present invention selects stress balance
And guiding accuracy is high, four guide posts 3 produced in enormous quantities is suitble to form mould bases, guarantees the service life and product of mold with this
Quality.Because cavity plate is not present in the stamping die, standard die set is not used.For the present invention, using lower die holder 1
400 × 300 × 40(of specification unit mm), 2 350 × 300 × 30(of specification unit mm of upper die holder), upper and lower die holder material uses
45 steel need modifier treatment, and guide post 3 uses the A type guide post of diameter 25mm, tolerance range h5, length 300mm, and material uses 20Cr,
It needs to be quenched.
The selection of feeding body
Feeding body 5 be both feeding position simultaneously and die cutting a part, size and material selection it is very crucial because such as
Fruit size is less than normal, and just inconvenient feeding, influences the normal production of worker, influence production efficiency.But size is less than normal to guarantee workpiece
Shape and size it is advantageous.If size is bigger than normal, feeding is lighter, but workpiece deformation is big when will lead to shearing.So
The tolerance of workpiece has been fully considered when size determines.
Under normal circumstances, for the condition of production of ratio-frequency welding rectangular tube, the size of steel pipe be can control ± 0.3 mm's
The margin of tolerance, but in process of production, steel pipe needs to cut off by certain length, and cut out portion can deform, usually width
Become smaller, highly become larger, deflection maximum is close to 1.5mm.Therefore according to the working principle of mold, in cutting, 10 phase of cutter
Floating core rod and feeding port are moved downward, so influence of the height of feeding port to part is little, main function is to steel
One restriction effect of pipe.But to prevent steel pipe in the feeding process, double swerve in the plane, the length of feeding body 5
It should select longer more preferable.Since feeding body 5 is also a part of die cutting simultaneously, material has selected hardened steel SKD 11,
In shape, it since steel tube surface has impurity, can be accumulated inside feeding port in the feeding process, clamping stagnation be generated, so will send
A part is prescinded among Material 5, makes its perforation, keeps feeding more smooth.
The selection of floating core rod and stationary core rod
In conditions permit, setting plug is punched out, to control the collapsing of tube wall, deform it is highly beneficial.Stationary core rod 7 follows
Determine core mounting base 6 to be mounted on upper die holder 2, floating core rod 18 is fixed by the iron staff through steel pipe tail portion, is cutting its front end
The end face of stationary core rod 7 is pressed on when disconnected.In order to guarantee that feeding is smooth, the size of floating core rod 18 should be than stationary core rod 7
Size is bigger.In addition the size of floating core rod 18 also should be than the undersized of steel pipe, the small 0.5mm of stock size or so.Due to
The top half of stationary core rod 7 does not generate shear action, while considering the fixation of device for discharging, so will fix in design
The top of plug 7 cuts 1.5mm again, and other sizes remain unchanged.Two are also opened respectively in the upper and lower part of stationary core rod 7
Semi-circular groove, the diameter of semi-circular groove is equal with the diameter for unloading charge bar 12, and capable of accommodating for semi-circular groove unloads the one of charge bar 12
Half part, therefore the half for unloading charge bar 12 can be located in semi-circular groove, greatly facilitate the bottom surface for unloading charge bar 12 to workpiece
Support.Additionally, due to high frequency steel pipe, there are weld seams, so to open a corresponding groove on plug, avoid stuck.
The selection of upper die cutter
The cutter 10 of top mold holder is to be set on a cutter mounting rack 9, and be fixed on upper die holder 2 with cutter mounting rack 9.Cutter
10 height should be greater than the height of part, and installation pore size is left on cutter 10.
The selection of feeding port mounting base
Feeding port mounting base 4 controls installation site of the feeding body 5 on lower die holder 1, steel pipe cutting for fixing feeding body 5
Guidance part is leaked out from 1 discharge port of lower die holder afterwards, while controlling the height of feeding port, facilitates feeding.It should be noted bottom
The rear portion of seat will be made into intilted inclined-plane, can smoothly be released and be fallen without bumping against feeding port peace after being cut off part
It fills on seat 4.Tube chamber welds with base makes them become an entirety on lower die holder 1.
Determine the selection of core mounting base and locating piece
A groove identical with 7 cross sectional shape size of stationary core rod can be opened on determining core mounting base 6, stationary core rod 7 is embedding
Enter wherein, using interference fit.Insertion distance and securely when in order to guarantee to install every time, on stationary core rod 7 and in groove point
It is other to make a call to two corresponding threaded holes, and connected with hexagon socket head cap screw.Locating piece 8 is also fixed by bolts on pedestal, and against solid
Determine the underface of plug 7.The length of locating piece 8 and the depth needs of pedestal upper groove are worked good, and stationary core rod 7 is fully inserted into
After groove, residue length subtracts the radical length that 8 length of locating piece is exactly equal to part after punching.Since stationary core rod 7 is installed
Enter groove, and with determining to cooperate with the edge of a knife of moving cutting tool 10, so determining core after core mounting base 6 is mounted on upper die holder 2
6 fovea superior groove height of mounting base is also required to determine according to specific needs, to guarantee center and the feeding of stationary core rod 7 after being installed
In sustained height, cutter mounting rack 9 should be corresponding with feeding port in the position of upper die holder 2, determines the position of core mounting base 6 at the center of mouth
Set then corresponding with the position of cutter mounting rack 9, the two distance should subtract depth of groove for the length of stationary core rod 7
With 9 width of cutter mounting rack.
The selection of device for discharging
After steel pipe is completely severed, the ratio-frequency welding rectangle pipe sleeve after cutting is on stationary core rod 7, then by stationary core rod 7 weeks
It encloses four and unloads the release of charge bar 12.Unload charge bar 12 pass through determine core mounting base 6 run through port (not shown), by two vertical plates 13
It is fixed together with an axis 14, unloads and need to assemble return spring on charge bar 12, so that device for discharging is returned to original after the completion of discharging
Position.Certain length is also left to install fixed guide plate 16 at the both ends of axis 14, guarantee that the direction of motion is accurate in discharging,
Reduce stripping force.One section is the key that control discharging opportunity among axis 14, which is provided with axle sleeve 15, axle sleeve 15 needs and lower die holder
A block 11 cooperation on 1, to control the time unloading charge bar 12 and releasing forward.Axle sleeve 15 must be after steel pipe be thrust completely
It is just allowed to encounter block 11, otherwise unloads the premature release of charge bar 12, steel pipe and mold can collide damage, unload charge bar 12
It can be hit curved.Axle sleeve 15 must continue to move downward a distance after encountering block 11, until part is completely from stationary core rod 7
It is detached from.The contact surface beveling of block 11 and axle sleeve 15, reaction force that such block 11 generates axle sleeve 15 perpendicular to
Inclined-plane, that is, there are a horizontal component, this is conducive to unload the release part of charge bar 12.The outer dimension of block 11 is answered simultaneously
Greater than the outer dimension of axle sleeve 15, to increase their collision area, abrasion is reduced.
In order to which discharging is convenient, the whole axle center and 7 center of stationary core rod of device for discharging are contour.By controlling on block 11
The height of movement come adjust device for discharging movement time.
The selection of die shank
Upper die holder 2 is fixed on press ram by medium and small mold generally by die shank 17.Here screw-in die shank is used
17,17 size of die shank is according to the size selection in 17 hole of die shank on selected press machine.
It should be strongly noted that the closed height of stamping die mean mold at minimum operating position, upper and lower die holder
Distance between outerplanar.Mold totality closed height must be adapted with the closed height of equipment, otherwise cannot be guaranteed normal
Installation and work.
The material of stamping die working part and heat treatment
The selection of mold materials is a very important link in entire die manufacture.Mold material selection needs to meet three
Principle: mold meets the works demand such as wearability, obdurability, and mold meets technique requirement, while mold should meet economic serviceability
It is required that.
The heat treatment of metal material will not generally change the shape and overall chemical ingredient of material itself pair, but improve work
The inherent quality of part.To make metal that there is required mechanical property, in addition to selection suitable material and correctly work is shaped
Outside skill, it is heat-treated often indispensable.The material and heat treatment process of the knife edge die main parts size are as shown in the table.
| Part name | Material | Heat treatment and hardness HRC |
| Upper and lower die holder | 45 steel | It is quenched |
| Die shank | Q235 | It is quenched |
| Guide post | 20Cr | 58~62HRC of carburizing and quenching |
| Determine core mounting base | 45 steel | It is quenched |
| It floats, stationary core rod | SKD11 | Harden 58~62HRC |
| Feeding body | SKD11 | Harden 58~62HRC |
| Cutter | SKD11 | Harden 58~62HRC |
| Cutter mounting rack | 45 steel | It is quenched |
| Feeding port mounting base | 45 steel | It is quenched |
| Fixed guide plate | Cr12 | Quench 52~56HRC |
| Unload charge bar, block | 45 steel | Quench 40~45HRC |
| Locating piece | 45 steel | It is quenched |
The assembly of stamping die
In the pre-assembly, it is also necessary to complete following process: dress watch part checks and cleans part according to assembly demand；Cloth
Work-yard is set, work, folder, measurer and material and ancillary equipment required when assembly are got out, clears up good berth platform, preparation
The assembly of stamping die can be carried out after the completion.
A. the installation for first carrying out lower die, feeding body is installed in feeding port mounting base, and is consolidated with hexagon socket head cap screw
It is fixed, it is noted that the direction of feeding port, left side one end and pedestal port keep horizontal when installation, the slightly prominent feeding port in right side one end
Mounting base；
B. the installation for carrying out upper mold again, cutter mounting rack is installed on upper die holder, and cutter is fixed on cutter mounting rack；
C. stationary core rod is installed in the groove for determining core mounting base, is then co-mounted on upper die holder again；
D. core mounting base is determined into the charge bar loading of unloading of device for discharging, fixed guide plate is mounted on an axle, guarantees that axis is led in fixation
Into plate, activity is smooth；
E. die shank is installed on upper die holder, then entire upper mold is closed onto lower die, be placed on press bench face together,
Upper die holder is fitted into press ram by die shank again.
Screw on each connector must be tightened, and any loose phenomenon is not allow for.Ensure to install it is errorless after, can carry out
Die trial, observing whether there is the exception such as interference in entire motion process, in the normal situation of mold work, to the zero of trial production
Part is detected, and sees whether comply with standard.It timely to be adjusted if there is problem.
The course of work of stamping die
A. workpiece is set on stationary core rod, and push hard against locating piece, is floated simultaneously by being manually sent into from feeding port
Plug is connected to fill in workpiece by an elongated iron across workpiece tail portion, follows workpiece motion s by manually push；
B. then starting press machine, upper die holder are moved downward by press machine drive, and workpiece is in feeding body, cutter, fixed, floating core
Under the collective effect of stick, shearing occurs, stretches, eventual failure；
C. the workpiece after cutting off covers on stationary core rod, and upper die holder continuation moves still further below, under the axle sleeve of device for discharging is encountered
When block on die holder, discharge arm, which is pushed, to travel forward, and discharge arm starts to encounter the workpiece covered on stationary core rod, and by it
Ejection；
D. workpiece is fallen down from the charging conduit of lower die holder bottom and the opening of press bench；
E. press machine starts uplink after reaching range, and discharge arm returns to initial position under the action of return spring elastic force,
One impulse stroke is completed.
The above is only the embodiment of the present invention, the common sense such as well known specific structure and characteristic are not retouched excessively herein in scheme
It states.It should be pointed out that for those skilled in the art, without departing from the structure of the invention, if can also make
Dry modification and improvement, these also should be considered as protection scope of the present invention, these all will not influence the effect that the present invention is implemented and
Patent practicability.The scope of protection required by this application should be based on the content of the claims, the specific reality in specification
Applying the records such as mode can be used for explaining the content of claim.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (10)
1. a kind of stamping die, the stamping die includes lower die holder (1), upper die holder (2), the lower die holder (1) and institute
For the upper die holder (2) stated by four guide post (3) connections, the upper die holder (2) can be along described guide post (3) Xiang Suoshu's
Lower die holder (1) sliding, the lower die holder (1) are equipped with charging conduit, which is characterized in that the side of the lower die holder (1) is set
Have feeding port mounting base (4), the feeding port mounting base (4) is equipped with feeding body (5), and the feeding body (5), which has, to be sent
Material mouth, the upper die holder (2) lower surface, which is equipped with, determine core mounting base (6), it is described determine core mounting base (6) be equipped with one it is recessed
Slot, in the groove on be equipped with stationary core rod (7), the lower part for determining core mounting base (6) is additionally provided with a positioning block (8), institute
The locating piece (8) stated is located at the underface of the stationary core rod (7), and described determines to be additionally provided on core mounting base (6) through logical
Mouthful, two semi-circular grooves are opened in the upper and lower part of the stationary core rod (7) respectively, in the lower part of the stationary core rod (7)
Between also open a recess, the upper die holder (2) lower surface is additionally provided with cutter mounting rack (9), on the cutter mounting rack (9)
Equipped with cutter (10), a block (11) are additionally provided on the lower die holder (1), the stamping die also has device for discharging,
The device for discharging includes upper and lower two groups of discharge components, and discharge component described in every group includes two and unloads charge bar (12), up and down
Two groups of discharge components can be pierced by from described through port, and each described unloading is additionally provided with return spring on charge bar (12),
In unload charge bar (12) described in four and corresponding can cooperate with semi-circular groove described in four, unload charge bar described in four
(12) it is connected on two vertical plates (13), is oppositely arranged on vertical plate (13) described in two, between vertical plate (13) described in two
It being connected with axis (14), the centre of the axis is equipped with axle sleeve (15), and the both ends of the axis (14) are equipped with fixed guide plate (16),
The axle sleeve (15) and the block (11) cooperate and are used to control the time unloading charge bar (12) and releasing forward, institute
It is additionally provided with die shank (17) on the upper die holder (2) stated, the upper die holder (2) is connected to press ram by the die shank (17)
On.
2. a kind of stamping die according to claim 1, which is characterized in that workpiece to be punched is tubular structure, described
Workpiece in be equipped with a floating core rod (18), the floating core rod (18) can be free to slide in workpiece, the floating
Plug (18) is fixed by the iron staff through workpiece tail portion, and the size of the floating core rod (18) is than the stationary core rod
(7) size is bigger.
3. a kind of stamping die according to claim 1, which is characterized in that the cutter (10) and in workpiece
Cutting edge on described floating core rod (18) composition；Under the feeding port composition of the stationary core rod (7) and the feeding body (5)
Cutting edge, after workpiece enters defined position from feeding port, upper and lower two secondary cutting edges are sheared simultaneously, are then filled by the discharging
It sets and unloads workpiece from the stationary core rod (7).
4. a kind of stamping die according to claim 1, which is characterized in that the feeding port mounting base (4) have to
Tilted inclined-plane, the feeding port mounting base (4) are welded on the lower die holder (1).
5. a kind of stamping die according to claim 1, which is characterized in that in the groove for determining core mounting base (6)
Two corresponding threaded holes are respectively equipped with on the stationary core rod (7), and are connected with hexagon socket head cap screw.
6. a kind of stamping die according to claim 1, which is characterized in that the stationary core rod (7) is fully inserted into recessed
After slot, residue length subtracts the radical length that locating piece (8) length is exactly equal to the workpiece after punching press.
7. a kind of stamping die according to claim 1, which is characterized in that sent with described at the center of the stationary core rod (7)
The center of material mouth is in sustained height, position and the feeding port of the cutter mounting rack (9) in the upper die holder (2)
Corresponding, the position for determining core mounting base (6) is corresponding with the position of cutter mounting rack (9), the two apart away from
The depth of groove and the width of the cutter mounting rack (9) are subtracted from the length for the stationary core rod (7).
8. a kind of stamping die according to claim 1 or 2, which is characterized in that the block (11) and the axis
(14) contact surface is inclined-plane.
9. a kind of assembly method of mold, the mold is stamping die described in claim 1-8 any one, feature
It is, the installation step of the stamping die is as follows:
A. the installation for first carrying out lower die, feeding body is installed in feeding port mounting base, and is fixed with hexagon socket head cap screw, is pacified
The when dress it is noted that direction of feeding port, left side one end and pedestal port keep horizontal, the slightly prominent feeding port installation in right side one end
Seat；
B. the installation for carrying out upper mold again, cutter mounting rack is installed on upper die holder, and cutter is fixed on cutter mounting rack；
C. stationary core rod is installed in the groove for determining core mounting base, is then co-mounted on upper die holder again；
D. core mounting base is determined into the charge bar loading of unloading of device for discharging, fixed guide plate is mounted on an axle, guarantees that axis is led in fixation
Into plate, activity is smooth；
E. die shank is installed on upper die holder, then entire upper mold is closed onto lower die, be placed on press bench face together,
Upper die holder is fitted into press ram by die shank again.
10. a kind of application method of mold, the mold is stamping die described in claim 1-8 any one, special
Sign is that steps are as follows for the use of the stamping die:
A. workpiece is sent by worker from feeding port, is set on stationary core rod, and push hard against locating piece, floats simultaneously
Plug is connected to fill in workpiece by an elongated iron across workpiece tail portion, follows workpiece motion s by manually push；
B. then starting press machine, upper die holder are moved downward by press machine drive, and workpiece is in feeding body, cutter, fixed, floating core
Under the collective effect of stick, shearing occurs, stretches, eventual failure；
C. the workpiece after cutting off covers on stationary core rod, and upper die holder continuation is moving downward, when the axis of device for discharging encounters lower die
When block on seat, discharge arm, which is pushed, to travel forward, and discharge arm starts to encounter the workpiece covered on stationary core rod, and it is pushed up
Out；
D. workpiece is fallen down from the charging conduit of lower die holder bottom and the opening of press bench；
E. press machine starts uplink after reaching range, and discharge arm returns to initial position under the action of return spring elastic force,
One impulse stroke is completed.
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| CN201910658247.5A CN110355258B (en) | 2019-07-21 | 2019-07-21 | Application method of stamping die |
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|---|---|---|---|
| CN201910658247.5A CN110355258B (en) | 2019-07-21 | 2019-07-21 | Application method of stamping die |
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| CN110355258B CN110355258B (en) | 2020-11-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114247933A (en) * | 2022-03-01 | 2022-03-29 | 常州巨旋机械制造有限公司 | Special shearing plate and shearing device for special-shaped metal plate and manufacturing process |
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|---|---|
| CN110355258B (en) | 2020-11-03 |
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