CN208230724U - The falling structure of backform bar in a kind of stamping die - Google Patents
The falling structure of backform bar in a kind of stamping die Download PDFInfo
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- CN208230724U CN208230724U CN201820788034.5U CN201820788034U CN208230724U CN 208230724 U CN208230724 U CN 208230724U CN 201820788034 U CN201820788034 U CN 201820788034U CN 208230724 U CN208230724 U CN 208230724U
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Abstract
The utility model provides a kind of falling structure of backform bar in stamping die, belongs to field of mechanical technique.It solves the problems, such as the falling structural instability of backform bar in existing stamping die.The falling structure of backform bar in this stamping die, stamping die includes die holder, it is set in die holder and can be moved upwards along die holder inner cavity and outward mold core and the backform bar being set to below mold core, falling structure after rise includes being set to the pedestal that can be interlocked below backform bar and with the formed punch of punching machine, the falling hole opposite with backform bar lower end is provided through on pedestal, this falling structure further includes actuator and the slide plate that is set on the base side and can translate, being provided through on slide plate can be for relief hole that backform bar lower end passes through, when backform bar, which moves up, opens mold core, actuator can drive slide plate relative to pedestal to be moved to relief hole opposite with backform bar lower end.It has many advantages, such as that backform bar is fallen after rise and stablizes, is not easy to be lost.
Description
Technical field
The utility model belongs to field of mechanical technique, is related to pushing up in a kind of stamping die more particularly to a kind of stamping die
The falling structure of tringle.
Background technique
Punching machine is a kind of press machine of punching type, and die holder is fixed in the rack of punching machine by when use, and setting is used in die holder
In the mold core placing workpiece and capable of opening and closing, punching press then is carried out to the workpiece in mold core using formed punch pushing.Currently, in order to
It realizes the taking-up of automatic die sinking and forging, a piece backform bar can be set in the lower section of mold core and baffle, baffle are located at backform bar
Lower section and baffle can be interlocked by setting pull rod to be formed with the formed punch of punching machine, completed back punching head when punching press and moved up and pass through
Pull rod moves up together with baffle, and baffle can withstand on backform bar and move up to eject mold core upwards to realize and hold
Mould.It although can be realized automatic die sinking by the gearing of formed punch and baffle and the cooperation of baffle and backform bar, but in order to make
Workpiece in mold core can discharge and new workpiece can be put into mold core, and formed punch is to be in off working state always,
Mean that backform bar is also always to be placed into then being influenced to will lead to new workpiece by backform bar in ejection state
After in mold core can not held stationary well, and only workpiece can not be made to be accurately positioned by active force of the formed punch in punching press,
Therefore it is easy that there are the skimble-scamble problems of machining accuracy.
In order to solve the above-mentioned problems in the prior art, Chinese patent once disclosed a kind of forge die [application number:
201510422307.5], including cope plate, lower template, formed punch and cavity plate, cavity plate are made of two pieces of half modules, and formed punch is arranged upper
The lower section of template, lower template are equipped with mould bases, and mould bases is equipped with aperture gradually smaller first through hole and two from the top down
The first sliding groove being located on first through hole hole wall, mould bases are equipped with two pieces of Huff dies being slidably connected respectively with two first sliding grooves
Block, two pieces of half modules are fixedly connected with two pieces of Hough modules respectively, and the lower section of mould bases is equipped with shedding mechanism, and shedding mechanism includes a pair
It is fixed on the backform machine that on mould bases and the panel extended downwardly, the mandril being located between two panels and control mandril are gone up and down
Structure, the lower end face contact of the upper surface of mandril and two pieces of Hough modules, mold pushing mechanism include that supporting plate, pair of sliding are connected to supporting plate
On two pieces of sliding blocks of sliding block and connection on tension spring, cope plate is equipped with a pair of connecting rod extended downwardly, two connecting rods and support
Plate is fixedly connected, and tourelle is respectively equipped on two pieces of sliding blocks, and inclined-plane, two tourelle difference are respectively equipped on two panels
It rolls across two inclined-planes two pieces of sliding blocks of control from the top down to draw close, two tourelles roll across two inclined-planes controls from bottom to top respectively
Two pieces of sliding blocks separate.
Two pieces of sliding blocks pass through matching for two tourelles and two pieces of inclined-planes during being moved up and down with cope plate
It closes, two tourelles roll across two inclined-planes two pieces of sliding blocks of control from the top down respectively and draw close, and are less than the spacing of two pieces of sliding blocks
The diameter of mandril lower end, to make two pieces of sliding blocks jack up mandril when moving upwards with cope plate, to realize two pieces of Hough modular belts
Two pieces of half module automatic open-closes are moved, realizes and stablizes discharging；Two tourelles roll across two inclined-planes from bottom to top respectively and control two pieces
Sliding block separate, until two pieces of sliding blocks spacing be greater than mandril lower end diameter, thus make mandril lose two pieces of sliding blocks support and
Automatically it falls, to guarantee that mandril will not impact placement of the subsequent workpiece in cavity plate.
Although above-mentioned forge die solves the problems, such as that mandril impacts subsequent workpiece placement using the above scheme,
But it there is also some shortcomingss: firstly, two sliding blocks are moved upwards with cope plate, while tension spring will be between two sliding blocks
It tenses to keep attachment device, tourelle can apply a upward active force always when this causes tourelle to roll across inclined-plane
Active force to the right is on inclined-plane, that is to say, that frictional force when tourelle rolls across inclined-plane very greatly, and can use rolling originally
Dynamic mode, which just has abrasion, to be existed, therefore when frictional force increases, abrasion is even more that can aggravate, and rolling is compensated in spite of tension spring
The abrasion of device, but the elastic force of tension spring is effectively, to will lead between tourelle and panel after above-mentioned movement is repeated several times
Gap become very big, just will appear tourelle and inclined-plane at this time can not form effectively cooperation and can not be successfully two sliding blocks and beat
It opens, is fallen so that mandril be caused to can not be successfully, influence the stability that mandril is fallen；In addition, in two sliding blocks openings but also not
When the gap that formation is passed through for mandril lower end, mandril lower end is still withstood on two sliding blocks, is equivalent to mandril in this case
A downward active force is applied on two sliding blocks one end close to each other, and sliding block will pass through and set bevelled panel then
It is required that sliding block has to have enough length, it is upturned then being easy for will appear one end that two sliding blocks are located remotely from each other,
That is two sliding blocks are in one end that one end close to each other is located remotely from each other to the bottom and tilt upward, this will cause tourelle and is stuck in tiltedly
It can not normally be rolled on face, can not stablize so as to cause mandril and fall.
Summary of the invention
The purpose of this utility model is in view of the above-mentioned problems existing in the prior art, to propose backform in a kind of stamping die
The falling structure of bar, the technical problem to be solved is that the stability how improved when backform bar is fallen after rise.
The purpose of this utility model can be realized by the following technical scheme:
The falling structure of backform bar in a kind of stamping die, stamping die include die holder, are set in die holder and being capable of edge
Die holder inner cavity move upwards and outward mold core and the backform bar being set to below mold core, the falling structure packet
The pedestal that is set to and can interlock below backform bar and with the formed punch of punching machine is included, is provided through and backform bar on the pedestal
The opposite falling hole in lower end, which is characterized in that this falling structure further includes actuator and is set on the base side and can put down
The slide plate of shifting, being provided through on slide plate can be for the relief hole that backform bar lower end passes through, when backform bar is moved up mold core
Actuator can drive slide plate relative to pedestal to be moved to relief hole opposite with backform bar lower end when opening.
As existing stamping die, die holder is mounted in the rack of punching machine when in use, and mold core is arranged in die holder,
Workpiece is placed in mold core, is then moved down by the formed punch of punching machine and is carried out punching press to workpiece.After the completion of punching press, the formed punch of punching machine
Reset is moved up, the pedestal below backform bar and formed punch are formed to interlock and also be resetted upwards, and slide plate is located on pedestal and with pedestal
It synchronizes and moves up, backform bar is by pedestal with to moving up after moving to slide plate upper side on pedestal and leaning with backform bar lower end surface
Dynamic, backform bar moves up and pushes up mold core upwards, and mold core is just moved up and outwardly opened along die holder inner cavity.After mold core is opened,
It is opposite with backform bar lower end that actuator drives slide plate relative to pedestal to be moved to relief hole, and falling hole is provided on pedestal,
Backform bar through relief hole and will fall hole and automatic fall-back after rise in this way.
Two sliding blocks are separated for allowing mandril to fall after rise using the cooperation on tourelle and inclined-plane in compared with the prior art,
The falling structure of backform bar passes through the mobile falling for realizing ejector beam of slide plate, the movement of middle slide plate and punching machine in this stamping die
Other movements it is mutually indepedent, i.e., slide plate is only driven by actuator without being limited by stamping die other component, and monolithic is sliding
Plate translates on pedestal keeps the mode of ejector beam falling more stable, is not in situation about be stuck on inclined-plane as two sliding blocks,
Will not occur relief hole can not being made opposite with backform bar lower end because of abrasion simultaneously, so that steady when backform bar retracts
It is qualitative more preferable.
In above-mentioned stamping die in the falling structure of backform bar, the pedestal is oriented to equipped with two opposite bar shapeds
Slot, slide plate are connected separately with guide rod between two bar shaped guide grooves and at left and right sides of slide plate, and guide rod, which passes through, to be corresponded to
Bar shaped guide groove in and can be moved along bar shaped guide groove.
Mobile formation of the slide plate on pedestal is oriented to by the cooperation of bar shaped guide groove and guide rod, guarantees that slide plate can be with
Accurately it is moved to that relief hole is opposite with backform bar lower end under the driving of the driving member, to realize the smooth falling of backform bar, thus
Further improve stability when backform bar is fallen after rise.
In above-mentioned stamping die in the falling structure of backform bar, the actuator is cylinder/oil cylinder, cylinder/oil
The cylinder body of cylinder is fixed on the base and cylinder/oil cylinder piston rod end is resisted against on the front side wall of slide plate, this falling structure is also
The reset spring on slide plate, and elastic force direction of the action of reset spring on slide plate and cylinder/oil cylinder are acted on including elastic force
Piston rod ejection is contrary.
After backform bar jacks up mold core under the drive of pedestal upwards, cylinder/oil cylinder piston rod ejects and pushes slide plate
It is moved rearwardly into that relief hole is opposite with backform bar lower end, backform bar will be through the falling hole automatic fall-back on relief hole and pedestal.
When formed punch pushes again, pedestal moves down again with slide plate, when slide plate is displaced downwardly to upper surface lower than backform bar lower end surface
Afterwards, backform bar is mutually separated with relief hole, and slide plate resets under the elastic force effect of reset spring and makes relief hole and backform bar at this time
Lower end is staggered, and opens mold core to guarantee that when pedestal moves up next time, slide plate can head on backform bar again and move up.
Conventionally, when using cylinder/oil cylinder as actuator, it should be directly that cylinder/oil cylinder piston rod is direct
It is fixedly connected with slide plate, is slided so that cylinder/oil cylinder piston rod be allow to drive slide plate translation when releasing and drive in retraction
Sheet reset.However, in actual production, sufficiently bulky due to entire stamping die, slide plate is also one block of very big plate of area,
It and is all made of that it is very big only to realize that the translation of slide plate and reset can cause cylinder/oil cylinder by cylinder/oil cylinder using metal
Loss, therefore cylinder/oil cylinder piston rod is set as only being abutted together with slide plate in this falling structure, utilizes gas
Cylinder/oil cylinder piston rod, which is released, drives slide plate translation, while being resetted using the elastic force of reset spring to slide plate, with this
Guarantee cylinder/oil cylinder service life, to guarantee stability of the backform bar when falling after rise.
In above-mentioned stamping die in the falling structure of backform bar, location hole is additionally provided on the pedestal, slide plate
Front side is connected at least one locating rod, and the located hole of locating rod is worn to outside pedestal and reset spring is set in locating rod and wears the bottom of to
On part outside seat, the reset spring both ends are withstood on respectively in pedestal and locating rod.
Locating rod is connected on front side of slide plate, locating rod is worn through the location hole on pedestal to outside pedestal, and reset spring is set in
Locating rod is worn on the part to outside pedestal, while reset spring both ends are withstood on respectively in pedestal and locating rod, since pedestal is phase
It is fixed to slide plate, therefore the elastic force of reset spring can be acted on slide plate by locating rod, to make slide plate
It is able to be formed and ejects contrary reset force with cylinder/oil cylinder piston rod, to ensure mutually to separate in relief hole with backform bar
Tail skid can automatically move the dislocation to realize relief hole Yu backform bar, keep the job stability of this falling structure more preferable.
In addition, the shaft hole matching that locating rod and location hole are formed can also play certain guiding role, then led with closing
To movement of the bar in bar shaped guide groove, slide plate is enabled more accurately to be moved to relief hole opposite with backform bar lower end.
In above-mentioned stamping die in the falling structure of backform bar, cylinder/oil cylinder piston rod is resisted against cunning
In the middle part of the front side wall of plate, the locating rod quantity is two, and two locating rods are located at left and right sides of cylinder/oil cylinder cylinder body,
Above-mentioned reset spring is arranged in two locating rods.
Cylinder/oil cylinder piston rod is resisted against in the middle part of the front side wall of slide plate, and such cylinder/oil cylinder can drive more stablely
Slide plate is translated, while setting two for locating rod, and is located at two locating rods at left and right sides of cylinder/oil cylinder cylinder body,
It is arranged reset spring in two locating rods, then reset slide plate by two reset springs more stablely.
In above-mentioned stamping die in the falling structure of backform bar, the pedestal includes and slide plate bottom disposed in parallel
Plate and the two parallel limited blocks being fixed on bottom plate, each limited block are equipped with an above-mentioned bar shaped guide groove, slide plate following table
Face mutually reclines with plate upper surface and slide plate slides are arranged between two limited blocks.
Slide plate lower surface mutually reclines with plate upper surface, and slide plate inclined feelings would not occur relative to bottom plate in translation
Condition, even and if slide plate have abrasion be also entire surface wear, then would not because slide plate tilt due to cause backform bar lower end can not
Relief hole is passed through, this also ensure that the stability that backform bar is fallen after rise to a certain extent.In addition, being arranged by slide plate slides
Between two limited blocks, that is to say, that clearance fit is formed between slide plate and two limited blocks, then making slide plate can only be toward front and back
The offset that direction is translated without left and right directions, which improves equally the stability when falling of backform bar.
In above-mentioned stamping die in the falling structure of backform bar, two limited blocks pass through fastener and are fixed on bottom plate
On, the downside of two limited blocks is equipped with recess one, and the bottom plate upper side is correspondingly provided with two recesses two, each recess one with it is right
The recess two answered plugs, and two sidewalls of each limited block at recess one lean with bottom plate front-rear side walls.
When connecting limited block and bottom plate, the recess one of limited block downside is inserted with recess two-phase corresponding on bottom plate
It connects, then recycles fastener that limited block and bottom plate are fixed together.After limited block is fixed on bottom plate, limited block is in recess
Two sidewalls at one lean with bottom plate front-rear side walls, that is to say, that limited block can be existed by the cooperation of recess one and recess two
Positioning is realized on bottom plate, then the distance between two limited blocks are just after two limited blocks are fixed on bottom plate through the above way
Meet the bar shaped guide groove that slide plate slides are arranged between two limited blocks, while being also ensured on two limited blocks well to set relatively
It sets, to ensure that slide plate can only guarantee that stablizing for backform bar is fallen after rise toward a reversed translation.
In above-mentioned stamping die in the falling structure of backform bar, before two limited blocks are in long strip and two limited blocks
End extends to outside the front side of bottom plate, and pedestal further includes the positioning plate being connected between two limited block front ends, cylinder/oil cylinder cylinder body
It is fixed on positioning plate, cylinder/oil cylinder piston rod passes through positioning plate and withstands on the front side wall middle part of slide plate, location hole setting
In on positioning plate, the end of locating rod is equipped with stopper, and the both ends of reset spring are withstood on respectively on stopper and positioning plate.
Positioning plate is mainly used for installing cylinder/oil cylinder cylinder body, while location hole being arranged on positioning plate, that is to say, that
Locating rod is that located hole is worn to outside positioning plate, in this way when reset spring is set on the part that locating rod is worn to outside positioning plate
Afterwards, one end of reset spring can be withstood in the stopper of positioning boom end, and the other end of reset spring can then be withstood on positioning plate.By
Be connected between two limited blocks in positioning plate, and two limited blocks are fixed on bottom plate, bottom plate relative to slide plate be it is fixed,
Therefore just the elastic force of reset spring can be made to act on slide plate by locating rod and guarantees action of reset spring on slide plate
Elastic force is contrary with the ejection of cylinder/oil cylinder piston rod, and such slide plate can be after by the ejection of cylinder/oil cylinder piston rod
Directly resetted using the elastic force of reset spring.
In above-mentioned stamping die in the falling structure of backform bar, it is mutually solid with positioning plate that two limited blocks pass through fastener
Fixed, the positioning plate is respectively arranged on the left side and the right side bayonet, two limited block front ends be in it is I-shaped, the front end of two limited blocks is blocked
In the corresponding bayonet of positioning plate.
Two limited block front ends are stuck in the corresponding bayonet of positioning plate, then recycle fastener by limited block and positioning plate
It is mutually fixed, it can guarantee that two limited block faces are arranged in this way, then positioning plate is exactly, and gas parallel with the leading flank of bottom plate
Cylinder/oil cylinder cylinder body can just make the leading flank of cylinder/oil cylinder piston rod and slide plate be to be in naturally after being fixed on positioning plate
Plumbness can guarantee the accurate movement of slide plate in this way, and then improve stability when backform bar is fallen after rise.
In above-mentioned stamping die in the falling structure of backform bar, the lower end cross section of the backform bar is in kidney-shaped,
The relief hole upper port is in outer expanding shape.
For normal, be not in swing when passing through relief hole to backform bar, backform bar is generally required to want with relief hole
Clearance fit can be just formed, but this can drive the distance of slide plate translation to propose to require well to actuator.And by backform
The lower end cross section of bar is in kidney-shaped, indicates that the lower end outside wall of backform bar parallel is faced directly and two outer convex globoidals are enclosed by two
At, wherein backform bar lower end still forms clearance fit by the inner wall of two outer convex globoidals and relief hole, to guarantee backform bar
Be not in swing situation in relief hole, while can be made between backform bar lower end and relief hole by two parallel facing directly again
Status requirement become less high.
Compared with prior art, the falling structure of backform bar realizes returning for ejector beam by the way that slide plate is mobile in this stamping die
It falls, the movement of middle slide plate and other movements of punching machine are mutually indepedent, i.e., slide plate is only driven by actuator without by stamping die
The limitation of other component, and monolithic slide plate translated on pedestal make ejector beam fall after rise mode it is more stable, be not in picture
Two sliding blocks are stuck in the situation on inclined-plane, while will not occur relief hole can not being made opposite with backform bar lower end because of abrasion,
Therefore stability when backform bar retracts is improved well.
In addition, by the cooperation of guide rod and bar shaped guide groove and the cooperation of locating rod and location hole so that slide plate is put down
It is more accurate to move, and further ensures the smooth falling of backform bar；And resetted by the elastic force of reset spring, make to bring about the desired sensation
Cylinder/oil cylinder as actuator will not excessive loss and generate fatigue, provide guarantee for the normal translation of slide plate.
Detailed description of the invention
Fig. 1 is the schematic diagram between stamping die and formed punch.
Fig. 2 is the schematic diagram of the falling structure of backform bar in this stamping die.
Fig. 3 is the longitudinal sectional view of the falling structure of backform bar in this stamping die.
Fig. 4 is schematic diagram when backform bar is fallen after rise.
Fig. 5 is longitudinal sectional view when backform bar is fallen after rise.
Fig. 6 is the exploded view of pedestal in the falling structure of backform bar in this stamping die.
In figure, 1, die holder；2, mold core；3, backform bar；4, pedestal；4a, bottom plate；4a1, hole is fallen after rise；4a2, recess two；4b,
Limited block；4b1, bar shaped guide groove；4b2, recess one；4c, positioning plate；4c1, location hole；4c2, bayonet；4c3, through-hole；5, sliding
Plate；5a, relief hole；6, actuator；7, guide rod；8, locating rod；8a, stopper；9, reset spring；10, cylinder body；11, piston rod；
12, formed punch；13, pull rod.
Specific embodiment
It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these examples.
As shown in Figures 2 and 3, in a kind of stamping die backform bar falling structure, stamping die include die holder 1, setting
In can move upwards in die holder 1 and along 1 inner cavity of die holder and outward mold core 2 and the top for being set to the lower section of mold core 2
The structure of tringle 3, mold core 2 and die holder 1 in the present embodiment can refer to a kind of punching machine of Patent No. ZL201220636465.2
Content disclosed in mould bases.
As shown in Figure 1, Figure 2 and Figure 3, structure is fallen after rise to include actuator 6, be set to 3 lower section of backform bar and connect with formed punch 12
Dynamic pedestal 4 and the slide plate 5 being arranged on pedestal 4 are provided through on pedestal 4 and fall hole 4a1 after rise, fall hole 4a1 and backform after rise
3 lower end of bar is oppositely arranged, be provided through on slide plate 5 can for the relief hole 5a that 3 lower end of backform bar passes through, when backform bar 3 to
When mold core 2 is opened in upper movement, actuator 6 can drive slide plate 5 to slide into relief hole 5a relative to pedestal 4 to be located at backform bar 3
Lower section.In the present embodiment, 3 lower end cross section of backform bar is in kidney-shaped, and the upper port of relief hole 5a is in outer expanding shape.
As shown in Figure 2 and Figure 6, bar shaped guide groove 4b1 there are two setting on pedestal 4, two bar shaped guide groove 4b1 are oppositely arranged,
Slide plate 5 is connected separately with guide rod 7 between two bar shaped guide groove 4b1, and in the left and right sides of slide plate 5, and guide rod 7 passes through
Corresponding bar shaped guide groove 4b1 and slide plate 5, which pass through guide rod 7, to be moved forward and backward along bar shaped guide groove 4b1.In the present embodiment
In, pedestal 4 includes the limited block 4b that bottom plate 4a and two is fixed in parallel on bottom plate 4a, and it falls hole 4a1 after rise and is set on bottom plate 4a,
Bottom plate 4a and formed punch 12 interlock, and specifically bottom plate 4a are connected with formed punch 12 by pull rod 13 to be formed and be interlocked, two limited blocks
A bar shaped guide groove 4b1 is respectively arranged on 4b.Two limited block 4b pass through fastener and are fixed on bottom plate 4a, two limited blocks
The downside of 4b is equipped with one 4b2 of recess, and bottom plate 4a upper side is correspondingly provided with two recesses, two 4a2, each one 4b2 of recess with it is corresponding
Two 4a2 of recess is plugged, and two sidewalls of each limited block 4b at one 4b2 of recess lean with bottom plate 4a front-rear side walls.
As shown in Fig. 2, Fig. 3 and Fig. 6, two limited block 4b are in long strip and the front end of two limited block 4b extends to bottom plate 4a
Front side outside, pedestal 4 further includes that the positioning plate 4c, two limited block 4b being connected between two front ends limited block 4b pass through fastener
It is fixed with positioning plate 4c phase, positioning plate 4c's is respectively arranged on the left side and the right side bayonet 4c2, and the front end of two limited block 4b is in I-shaped
Type, and the front end of two limited block 4b is stuck in bayonet 4c2.Actuator 6 is cylinder, and the cylinder body 10 of cylinder is fixed on positioning plate 4c
On, the center positioning plate 4c is provided through through-hole 4c3, and the 11 via through holes 4c3 of piston rod of cylinder passes through positioning plate 4c and withstands on cunning
On in the middle part of the front side wall of plate 5., can also be using oil cylinder as actuator 6 other than cylinder, the cylinder body 10 of oil cylinder is fixed on positioning
On plate 4c, the piston rod 11 of oil cylinder passes through positioning plate 4c and withstands on the front side wall middle part of slide plate 5.
As shown in Fig. 2, Fig. 3 and Fig. 6, at least one location hole 4c1, the front side of slide plate 5 are provided through on positioning plate 4c
It is connected at least one locating rod 8, the located hole 4c1 of locating rod 8 wears to outside positioning plate 4c and in locating rod 8 and wears to positioning plate 4c
Outer part is arranged with reset spring 9, and 8 end of locating rod is equipped with stopper 8a, and one end of reset spring 9 is withstood on stopper 8a, multiple
The other end of position spring 9 is withstood on positioning plate 4c.In the present embodiment, locating rod 8 is two, is arranged in every locating rod 8
There is reset spring 9, and locating rod 8 is located at the left and right sides of cylinder.
When needing to stamp, workpiece is placed in the mold core 2 of die holder 1, then the formed punch 12 of punching machine, which pushes, carries out workpiece
Punching press.Since pedestal 4 and formed punch 12 interlock, pedestal 4 and slide plate 5 are also moved down when formed punch 12 pushes.Workpiece punching press is complete
Cheng Hou needs to take out workpiece out of mold core 2, and formed punch 12 moves up and with pedestal 4 and slide plate 5 together to moving up at this time
It is dynamic.As shown in Figures 2 and 3, since slide plate 5 is located at the lower section of backform bar 3, when pedestal 4 and slide plate 5 are moved further up
When 5 upper side of slide plate and the lower end surface of backform bar 3 lean.Then backform bar 3 is just pushed up upwards, so that mold core 2 be pushed up
Out, thus mold core 2 outwardly opens, can thus take out workpiece.
As shown in Figure 4 and Figure 5, mold core 2 is opened and after workpiece taking-up, needs just to need when carrying out punching press to next workpiece
Again mold core 2 is closed, but is closed in die holder 1 for mold core 2 since backform bar 3 is headed on by pedestal 4 to move up and occupy
Space, therefore just need to reset backform bar 3 first downwards.At this point, gas in-cylinder fuel supply ejects the piston rod 11 of cylinder.Due to gas
The piston rod 11 of cylinder is withstood on the front side wall of slide plate 5, therefore the piston rod 11 of cylinder will push slide plate 5 and move backward.And bottom
The falling hole 4a1 opposite with 3 lower end of backform bar is provided through on seat 4, while the piston rod 11 of cylinder can head on the shifting of slide plate 5 again
It moves to the relief hole 5a on slide plate 5 and is located at the lower end of backform bar 3, so, backform bar 3 will be through relief hole 5a and falling hole
4a1 and move down so that die holder 1 in for mold core 2 be closed space be released, mold core 2 can be moved into die holder 1 again
It moves and is closed.
When carrying out punching press next time, formed punch 12 moves down again, and pedestal 4 is with slide plate 5 also with moving down.Work as bottom
When seat 4 is moved to extreme lower position, 3 lower end of backform bar is higher than slide plate 5, that is to say, that the lower end of backform bar 3 is no longer pass through slide plate 5
On relief hole 5a, at this time slide plate 5 can spring elastic force effect under reset forward so that relief hole 5a no longer with backform
3 lower end of bar is opposite, is in order to which guarantee ought be again after the completion of punching press in this way, pedestal 4 moves up still can be by 5 upper end of slide plate
Face leans with 3 lower end surface of backform bar and pushes up backform bar 3.
The falling structure of backform bar realizes the falling of ejector beam by the translation of slide plate 5 in this stamping die, middle slide plate 5
Movement and other movements of punching machine are mutually indepedent, i.e., slide plate 5 is only driven by actuator 6 without the limit by stamping die other component
System, and monolithic slide plate 5 translate on pedestal 4 make ejector beam falling mode it is more stable, be not in as two sliding blocks are stuck in
Situation on inclined-plane, while will not occur relief hole 5a can not being made opposite with 3 lower end of backform bar because of abrasion, so that
Stability when backform bar 3 retracts is more preferable.
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Claims (10)
1. the falling structure of backform bar in a kind of stamping die, stamping die includes die holder (1), is set in die holder (1) and energy
It is enough to be moved upwards along die holder (1) inner cavity and outward mold core (2) and the backform bar (3) being set to below mold core (2),
The falling structure includes being set to the pedestal (4) that can be interlocked below backform bar (3) and with the formed punch (12) of punching machine, described
Pedestal (4) on be provided through the falling hole (4a1) opposite with backform bar (3) lower end, which is characterized in that this falling structure is also
Being provided through on the slide plate (5) pedestal (4) upside and can translated, slide plate (5) including actuator (6) and setting can
For the relief hole (5a) that backform bar (3) lower end passes through, actuator (6) energy when backform bar (3), which moves up, opens mold core (2)
Enough it is opposite with backform bar (3) lower end relative to pedestal (4) to be moved to relief hole (5a) for driving slide plate (5).
2. the falling structure of backform bar in stamping die according to claim 1, which is characterized in that the pedestal (4)
Two opposite bar shaped guide grooves (4b1) are equipped with, slide plate (5) is between two bar shaped guide grooves (4b1) and on a left side for slide plate (5)
Right two sides are connected separately with guide rod (7), and guide rod (7) is interior across corresponding bar shaped guide groove (4b1) and can be along bar shaped
Guide groove (4b1) is mobile.
3. the falling structure of backform bar in stamping die according to claim 2, which is characterized in that the actuator
It (6) is cylinder/oil cylinder, cylinder/oil cylinder cylinder body (10) is fixed on pedestal (4) and cylinder/oil cylinder piston rod (11) end
It is resisted against on the front side wall of slide plate (5), this falling structure further includes the reset spring (9) that elastic force acts on slide plate (5), and multiple
It is contrary with cylinder/oil cylinder piston rod (11) ejection that position spring (9) acts on the elastic force direction on slide plate (5).
4. the falling structure of backform bar in stamping die according to claim 3, which is characterized in that the pedestal (4)
On be additionally provided with location hole (4c1), be connected on front side of slide plate (5) at least one locating rod (8), locating rod (8) located hole
(4c1) is worn to pedestal (4) outside and reset spring (9) is set in locating rod (8) and wears to the outer part of pedestal (4), and described answers
Position spring (9) both ends are withstood on respectively on pedestal (4) and locating rod (8).
5. the falling structure of backform bar in stamping die according to claim 4, which is characterized in that the cylinder/oil
The piston rod (11) of cylinder is resisted against in the middle part of the front side wall of slide plate (5), and the locating rod (8) quantity is two, and two locating rods
(8) it is located at left and right sides of cylinder/oil cylinder cylinder body (10), above-mentioned reset spring (9) is arranged on two locating rods (8).
6. according to the falling structure of backform bar in stamping die described in Claims 2 or 3 or 4 or 5, which is characterized in that described
Pedestal (4) include and slide plate (5) bottom plate disposed in parallel (4a) and the two parallel limited blocks being fixed on bottom plate (4a)
(4b), each limited block (4b) are equipped with an above-mentioned bar shaped guide groove (4b1), slide plate (5) lower surface and table on bottom plate (4a)
Face mutually reclines and slide plate (5) is slidably arranged between two limited blocks (4b).
7. the falling structure of backform bar in stamping die according to claim 6, which is characterized in that two limited blocks (4b) are equal
It is fixed on bottom plate (4a) by fastener, the downside of two limited blocks (4b) is equipped with recess one (4b2), the bottom plate
(4a) upper side is correspondingly provided with two recesses two (4a2), and each recess one (4b2) plugs with corresponding recess two (4a2), and each limit
Two sidewalls of the position block (4b) at recess one (4b2) lean with bottom plate (4a) front-rear side walls.
8. the falling structure of backform bar in stamping die according to claim 7, which is characterized in that two limited blocks (4b) are equal
In long strip and two limited blocks (4b) front ends extend to outside the front side of bottom plate (4a), and pedestal (4) further includes being connected to two limits
Positioning plate (4c) between the front end block (4b), cylinder/oil cylinder cylinder body (10) are fixed on positioning plate (4c), cylinder/oil cylinder
Piston rod (11) passes through positioning plate (4c) and withstands on the front side wall middle part of slide plate (5), and location hole (4c1) is set to positioning plate
On (4c), the end of locating rod (8) is equipped with stopper (8a), and the both ends of reset spring (9) withstand on stopper (8a) and positioning plate respectively
On (4c).
9. the falling structure of backform bar in stamping die according to claim 8, which is characterized in that two limited blocks (4b) are equal
It is mutually fixed by fastener and positioning plate (4c), the positioning plate (4c) is respectively arranged on the left side and the right side bayonet (4c2), two limits
The front end block (4b) be in it is I-shaped, the front end of two limited blocks (4b) is stuck in the corresponding bayonet (4c2) of positioning plate (4c).
10. the falling structure of backform bar in stamping die according to claim 1, which is characterized in that the backform bar
(3) lower end cross section is in kidney-shaped, and the relief hole (5a) upper port is in outer expanding shape.
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| CN201820788034.5U CN208230724U (en) | 2018-05-24 | 2018-05-24 | The falling structure of backform bar in a kind of stamping die |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108555176A (en) * | 2018-05-24 | 2018-09-21 | 台州建松机械有限公司 | The falling structure of backform bar in a kind of diel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108555176A (en) * | 2018-05-24 | 2018-09-21 | 台州建松机械有限公司 | The falling structure of backform bar in a kind of diel |
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