CN202028678U - Dual-purpose punching die - Google Patents

Abstract

The utility model discloses a dual-purpose punching die, and relates to a die which punches holes on thin-walled square steel tubes and thin-walled flat steel tubes. An upper die, a core die and a lower die are fixedly arranged in a die holder, the core die is strip-shaped, the front end of the core die is suspended while the rear end of the core die is fixed at the rear end of the die holder, two spring blocks which spring out towards two sides in a linkage manner are disposed in the core die, pulleys of two clamp handles in an external clamp device on the die holder respectively extend in the die holder in a linkage manner, the core die consists of an upper core die and a lower core die, the rear ends of the upper core die and the lower core die are fixed together, the front ends of the upper core die and the lower core die are suspended, the upper core die corresponds to an inner hole of a flat steel tube, the upper core die and the lower core die correspond to inner holes of a square steel tube, the two spring blocks are disposed on the upper core die, a clamp groove is arranged on the upper core die, a fan-shaped swing plate is disposed on the lower core die, the lower die is fixedly provided with a positioning plate with a clamp groove, and the fan-shaped swing plate on the lower core die is clamped in the clamp groove of the positioning plate or the clamp groove of the upper core die in a turnover manner. Round holes can be punched on the flat steel tubes and the square steel tubes fast and flexibly without assembling and disassembling any parts.

Description

Dual-purpose punching die

Technical field

The utility model relate to a kind of at thin-walled square metal tube and the flat rectangular metal pipe of thin-walled on the mould of punching.

Background technology

At building industry and decorative craft, be extensive use of the framework of thin-walled square steel tube (hereinafter to be referred as square steel tube) the structure rectangle burglary-resisting window of stainless steel, in this framework, be provided with many longitudinally stainless steel the thin-walled round steel pipe and add together or the flat rectangular steel pipe of twice stainless steel thin-wall (hereinafter to be referred as the band steel pipe) as horizontal buttress brace, form fence.Here said band steel pipe and square steel tube, identical, the interior hole width of wall thickness is identical, and endoporus height difference.Before assembling and being welded into burglary-resisting window, need in advance lower wall at the entablature square steel tube of this framework, the upper side wall of sill square steel tube, the upper and lower sidewall of each buttress brace band steel pipe are gone out corresponding circular hole respectively, so that intert round steel pipe longitudinally.For this reason, the inventor has successively proposed two corresponding utility model patents.

First is that the disclosed patent No. of Chinese utility model patent specification CN 267705Y is ZL200420038557.6, name is called the technical scheme of " a kind of manual stainless steel square pipe punching machine ", propose this perforating press comprise casing, main mould, with suitable main mould cutter, eccentric wheel and hand wheel of main mould; Main mould comprises patrix, core and counterdie, and from top to bottom is fixedly arranged on successively in the support of casing bottom.Core is a strip, and its rear end is fixed on the rear end of support, and its leading section is unsettled.Patrix, core, counterdie are provided with the nib of consistency from top to bottom, main mould cutter also with each nib consistency from top to bottom.Set firmly a rotating shaft on the eccentric wheel, the rotating casing top of being located at of this rotating shaft, its overhanging end and hand center of taking turns are affixed.Eccentric outer peripheral face is arranged with a sleeve rotationally.Other has a connecting rod, and the top of this connecting rod is connected with this sleeve is rotating, and the bottom of this connecting rod is connected with the top of main mould cutter is rotating.The square steel tube of stainless steel is inserted in the main mould of casing bottom, its core is inserted in this square steel tube, shake hand the wheel, eccentric wheel rotates thereupon, sleeve on the eccentric wheel makes the connecting rod motion that teeters, and then makes main mould cutter circular hole along this square steel tube upper side wall of nib punching press of patrix in main mould.Further, in casing, be provided with a secondary mould and with the suitable secondary mould cutter of this pair mould; Secondary mould also comprises second patrix, second core and second counterdie, and from top to bottom is fixedly arranged on successively in the support of casing bottom.Second core is a strip, and its rear end is fixed on the rear end of support, and its leading section is unsettled.Second patrix, second core, second counterdie are provided with the nib of consistency from top to bottom, secondary mould cutter also with these nib consistencies from top to bottom.The bottom of above-mentioned connecting rod can switch to directly and be connected with the top of secondary mould cutter is rotating.The band steel pipe of stainless steel is inserted in the secondary mould of casing bottom, its second core is inserted in this band steel pipe, shake hand the wheel, eccentric wheel rotates thereupon, sleeve on the eccentric wheel makes the connecting rod motion that teeters, and then make secondary mould cutter circular hole along this band steel pipe upper side wall of nib punching press of second patrix in secondary mould, again through the circular hole of this band steel pipe lower wall of nib punching press of second core.

But the main mould of this perforating press (and secondary mould) exists core (second core) and arranged on left and right sides in the square steel tube (or band steel pipe) that neutrality be can not get guaranteeing the defective of fragile core during punching press (second core).In addition, because the band steel pipe is identical with the interior hole width of square steel tube, and endoporus height difference, a corresponding round steel pipe need be gone out two circular holes up and down on the band steel pipe, and corresponding round steel pipe only need be gone out a circular hole on the square steel tube; In order to be fit to the different punching requirements of square steel tube and band steel pipe, need two cover cores.

For solving above-mentioned two problems, the inventor has further improved the mould of square-pipe punching machine, proposing the disclosed patent No. of Chinese utility model patent specification CN 201046478Y is ZL200720006626.9, and name is called the technical scheme of " a kind of piercing on rectangular tube mould with apparatus structure in the automatic accent ".This punching die is offered translot one in core, each hinged " fourth " type bullet piece of the and arranged on left and right sides in this translot, the mutual interlock of toothed region of hinged place, two bullet piece middle parts; Establish extension spring between the rear end of two bullet pieces, their front end is ejected to the core and arranged on left and right sides in linkage.In band steel pipe or square steel tube insert die holder (being " support " in the last utility model file) and entangle this core, two bullet pieces are the left and right sidewall of roof pressure band steel pipe or square steel tube internally, reaches the effect that makes band steel pipe or square steel tube and core automatic centering; Clamp device outside on die holder, being provided with simultaneously, should comprise left and right two clamp holders by outer clamp device, the rear end of two clamp holders is hinged on the upper back of patrix respectively and is provided with the mutual interlock of gear part, the front end that is provided with extension spring and two clamp holders between the front end of two clamp holders is respectively equipped with the curved boom of downward extension, pulley of the installed inside of each curved boom; Two pulleys pass window corresponding on the die holder respectively and stretch in the die holder, from the left and right sidewall of outside roof pressure band steel pipe or square steel tube, reach the effect that makes the upper die and lower die automatic centering on band steel pipe or square steel tube and the die holder.Just can not damage core during punching press.

But the core in this technical scheme need remove from die holder, and with after the dismounting of the counterdie on the die holder, fixes a pad mould that has nib at the lower surface of core front end again, could change the circular hole of punching press square steel tube from the circular hole of punching press band steel pipe into.So it also has the impact style shortcoming easily inadequately of changing band steel pipe and square steel tube, incompatible in the operation of various job sites to the impact style flexibility with to the rate request of quick change.

The utility model content

The utility model aims to provide a kind of dual-purpose punching die, without dismounting pad mould and counterdie, just can finish the operation of the circular hole of punching press band steel pipe and square steel tube fast, neatly with same core.

The technical solution of the utility model is: dual-purpose punching die sets firmly patrix, core and the counterdie of the nib with upper and lower alignment from top to bottom successively in the die holder; This core is a strip, on the rear end that its leading section is unsettled, die holder is fixed in the rear end; Two bullet pieces that eject to the left and right sides in linkage are set in this core; The outer clamp device that is provided with on this die holder comprises left and right two clamp holder and extension springs that have gear part, curved boom and pulley, and the pulley of two clamp holders passes window corresponding on the die holder in linkage respectively and stretches in the die holder; Last core that this core is fixed together by the rear end and leading section is unsettled and following core are formed; The thickness that should go up core is corresponding with the height of band steel pipe orifice, and last core is corresponding with the height of square steel tube endoporus with the thickness sum of following core; Should go up the nib that is respectively equipped with upper and lower alignment on core and this time core; Described two bullet pieces are located on the core; Should go up core and be provided with the draw-in groove of front and back to the setting of extending, this time core is provided with the fan-shaped pendulum of front and back to the setting of extending; Set firmly a spacer on this counterdie, this spacer has the nib that aligns with the counterdie nib and front and back to the draw-in groove that extends; Fan-shaped pendulum on this time core snaps into turningly in the draw-in groove of spacer on this counterdie and maybe should go up in the draw-in groove of core.

In the band steel pipe inserts die holder and cover live in core, " core " when last core becomes punching press band steel pipe; And the fan-shaped pendulum of erectting on the following core is pushed and snaps in the draw-in groove of spacer on the counterdie by the lower wall outer surface of band steel pipe; Following core is connected with counterdie by spacer, " counterdie " when following core becomes punching press band steel pipe.In square steel tube inserts die holder and cover live in core and following core, the fan-shaped pendulum of erectting on the following core is by the pushing of the lower wall inner surface of square steel tube and snap in the draw-in groove of core, last core is connected as a single entity with following core." core " when forming the punching press square steel tube.So without any part of dismounting, the same core that just can use core and following core composition fast, is neatly finished the operation of the circular hole of punching press band steel pipe and square steel tube.

Implement in the structure preferred: the described front end of core down is provided with the guiding tongue, and this guiding processus hyoideus is for the front end face of last core.

The band steel pipe can overlap core easily by means of the upper surface of this tongue that leads; And square steel tube can overlap core and following core easily by means of the lower surface of this tongue that leads.

Implement in the structure preferred: the rear end of described die holder is provided with an adjustment rack, and this adjustment rack has sliding sleeve and support body; This sliding sleeve is the rectangular block shape body that has vertical axis hole, and its upper surface has the last screw that connects axis hole, and its lower surface has the following screw that connects axis hole; A recessed platform is left to accept the rearward end of core in the front portion of support body, has major part on this platform at last stairstepping positioning screw hole; The middle part of support body is provided with circular shaft, and the rear end of support body is a screw rod; The rear end of die holder is the square tube that the upper end is opened wide, the elongated slot that extends before and after the lower wall of die holder rear end has, and the rear wall of die holder rear end has via hole; This sliding sleeve is placed in the elongated slot top of this die holder rear end, and the elongated slot that first screw passes this die holder rear end lower wall is screwed together in the following screw of this sliding sleeve, this sliding sleeve is fixed on the rear end of this die holder; The round sleeve of this support body is loaded in the axis hole of this sliding sleeve, and the screw rod of this support body screws togather the via hole that passes this die holder rear end rear wall behind first nut, screws togather second nut again; Second screw is screwed together in the last screw of this sliding sleeve and locks the circular shaft of this support body; Should go up the core rearward end is provided with the locating hole of a setting and is provided with a positioning boss to lower convexity at its lower surface around this locating hole; Should go up the core rearward end rides against on the platform of this support body, the positioning boss that should go up the core rearward end is stuck in the enlarged head of this support body platform stairstepping positioning screw hole, and a dog screw passes the locating hole of core rearward end on this and is screwed together in this support body platform stairstepping positioning screw hole.

The effect of adjustment rack has three: one, changes the relative angle of circular shaft in the axis hole of sliding sleeve of support body, can adjust the registration of space angle of the nib axis of the nib axis of core and following core and the upper die and lower die on the die holder, elimination angle deviation.Two, change the front and back position of the elongated slot top slide over die holder rear end lower wall, can adjust the registration of front and back position of the nib axis of the nib axis of core and following core and the upper die and lower die on the die holder, elimination front and back position deviation.Three, the positioning boss of last core rearward end is stuck in the enlarged head of support body platform stairstepping positioning screw hole, only need a dog screw to pass the locating hole of core rearward end and be screwed together in support body platform stairstepping positioning screw hole, core is located by connecting quickly and accurately in the rear end of die holder; Readjust the loaded down with trivial details operation of location in the time of can saving core in the dismounting.

Implement in the structure preferred: the described lower surface of going up the rearward end of core is provided with a positioning screw hole and is provided with a lug that extends downwards at the rear of this screw, has via hole on this lug; The rearward end of described down core be provided with major part under the stairstepping via hole and the rear end face of this time core be provided with the screw rod that extends back; The screw rod of described down core rear end screws togather the via hole that passes core rear end lug on this behind the nut, screws togather another nut again; A dog screw passes the described stairstepping via hole of core rearward end down and is screwed together in the described positioning screw hole of going up the core rearward end.

In the time of only need assembling for the first time, two nuts cooperate with the lug of last core rear end on the screw rod of the following core rear end of utilization, adjust the nib axis of core and the registration of the front and back position of the nib axis of following core, the stairstepping via hole of core rear end is at the certain position of preceding drill with ferrule of last core rear end lug screw under passing through again, and the stairstepping via hole that dog screw passes down the core rearward end is screwed together in the positioning screw hole of core rearward end, the front and back position location that just can realize down core and last core.Later under removing during core, though will unclamp down two nuts on the screw rod of core rear end; But when loading core, as long as the stairstepping via hole that dog screw is passed down the core rearward end is screwed together in the positioning screw hole of core rearward end, again again locking down on the screw rod of core rear end two nuts make their clamp the lug of going up core rear end, core is located by connecting quickly and accurately in the rear end of last core; Readjust the loaded down with trivial details operation of location in the time of can saving core under the dismounting.

Implement in the structure preferred: the described core of going up is made up of the last die shank of last hard alloy blocks that has nib and strip, and hard alloy blocks is fixed on the front end of die shank and is somebody's turn to do the lower surface that the lower surface of going up hard alloy blocks is lower than die shank on this on this; Described down core comprises the following hard alloy blocks that has nib and the following die shank of strip, and the upper surface that this time hard alloy blocks is fixed on the front end of this time die shank and this time hard alloy blocks is higher than the upper surface of this time die shank; Upward be provided with a pad between the rearward end of die shank rearward end and this time die shank, this pad is set on the described dog screw.

The service life of adopting hard alloy blocks can improve upper and lower core, but also improved requirement to the nib dead in line degree of upper and lower core.Utilization is provided with the mode of pad, makes between the following die shank of the last die shank of core and following core and forms a gap.Going up the last hard alloy blocks of core and the following hard alloy blocks of following core when this gap can make the punching press square steel tube on the one hand entirely fits together; The nib axis inregister of upper and lower core.On the other hand, when this gap also helps punching press band steel pipe, the lower wall of holding the band steel pipe, avoided the lower wall of the direct clamping band steel of the following die shank pipe of the last die shank of last core and following core, make the nib axis of upper and lower core roughly overlap, the lower wall of the following hard alloy blocks clamping entirely of the last hard alloy blocks of last core and following core band steel pipe between them.Thereby the nib of following hard alloy blocks that makes the nib of last hard alloy blocks of core and following core protects the hard alloy blocks of upper and lower core can not be damaged in the coincidence that two kinds of machining states can both keep axis.

The dual-purpose punching die of the utility model is divided into last core and the following core that the rear end is fixed together and leading section is unsettled with core; The thickness of last core is corresponding with the height of band steel pipe orifice, can be directly as the core of punching press band steel pipe.Last core is corresponding with the height of square steel tube endoporus with the thickness sum of following core, can be used as the core of punching press square steel tube.To the draw-in groove of the setting of extending, to the fan-shaped pendulum of the setting of extending, on counterdie, set firmly before and after having spacer before and after on core down, establishing before and after on last core, establishing to the draw-in groove that extends; Utilize fan-shaped pendulum on the core down to snap in the draw-in groove of spacer on the counterdie turningly or go up in the draw-in groove of core, the automatic centering problem of core under having solved in two kinds of punching states of band steel pipe and square steel tube, make each nib axis overlap all the time, the nib that has guaranteed upper and lower core can not processed the change of operating type and be damaged.So the dual-purpose punching die of the utility model, just can be used the operation that the same core of core and following core composition is finished the circular hole of punching press band steel pipe and square steel tube fast, neatly without any part of dismounting.Compared with prior art, it is simple that it has an additional structure, easy to implement and use production efficiency height, the advantage of long service life.

Description of drawings

Fig. 1 is the perspective view of an embodiment of the dual-purpose punching die of the utility model.

Fig. 2 is the plan structure schematic diagram of Fig. 1 embodiment leading section.

Fig. 3 is the side structure schematic diagram of Fig. 1 embodiment leading section.

Fig. 4 is the structural representation of spacer among Fig. 1 embodiment.

Fig. 5 is the structural representation of looking up of Fig. 1 embodiment leading section.

Fig. 6 is the deployed configuration schematic diagram of adjustment rack among Fig. 1 embodiment.

Fig. 7 is the plan structure schematic diagram of Fig. 1 embodiment rearward end.

Fig. 8 is the right flank structural representation of Fig. 1 embodiment rearward end.

Fig. 9 is the structural representation of looking up of Fig. 1 embodiment rearward end.

Figure 10 is the perspective view of the upper and lower core among Fig. 1 embodiment.

Figure 11 is the perspective view of the last core among Fig. 1 embodiment.

Figure 12 is the perspective view of the following core among Fig. 1 embodiment.

Figure 13 is the right flank structural representation of the upper and lower core leading section among Fig. 1 embodiment.

Figure 14 is the plan structure schematic diagram of the upper and lower core leading section among Fig. 1 embodiment.

Figure 15 is the right flank structural representation of the upper and lower core rearward end among Fig. 1 embodiment.

Figure 16 is the structural representation of looking up of the upper and lower core rearward end among Fig. 1 embodiment.

Figure 17 is the leading flank structural representation of Fig. 1 embodiment.

Figure 18 is that Fig. 1 embodiment is at the leading flank structural representation that inserts band steel tubulose attitude.

Figure 19 is that Fig. 1 embodiment is at the leading flank structural representation that inserts the square steel tube state.

The specific embodiment

Embodiment of the dual-purpose punching die of the utility model is applicable to punching on thin-walled square metal tube with same widths and the flat rectangular metal pipe of thin-walled, particularly be applicable to and have upward punching of stainless steel thin-wall square steel tube of same widths (abbreviation square steel tube) and the flat rectangular steel pipe of stainless steel thin-wall (being called for short the band steel pipe), its stereochemical structure, as shown in Figure 1.One section channel-section steel 11 of front end welding of the rectangular steel tube 10 of strip, the square tube 14 that upper end of welding, rear end of rectangular steel tube 10 is opened wide is formed die holder 1.The diapire lower surface of channel-section steel 11 is fixed a base plate 112, respectively has a window 113 on left and right two sidewalls of channel-section steel 11.The back lower place of each window 113 is provided with a screw a little more than the upper surface of the diapire of channel-section steel 11, screws togather a screw 115 in each screw.Each fixes on connection side's steel pipe and the band steel pipe connecting plate 121 of the adjustment positioner (not shown in figure 1) of pitch-row between adjacent circular holes on left and right two sidewalls of channel-section steel 11, adjusting the structure of positioner can not give unnecessary details here with reference to adjustable plate in first utility model patent of the inventor and main square tube positioner.Respectively have a window 122 on two connecting plates 121, the window 113 of homonymy aligns on each window 122 and the channel-section steel 11.The fixedly connected patrix 12 in the top of channel-section steel 11 left and right two sidewalls.Please referring to Figure 17.The upper surface of patrix 12 aligns with nib 1201 around the endoporus 131 that circular nib 1201 is provided with fairlead 13. fairleads 13 of mould cutter.The diapire of channel-section steel 11 and base plate 112 constitute counterdie, and circular hole 1101 on channel-section steel 11 diapires and the circular hole on the base plate 112 1121 constitute the nib of counterdie, and the nib of patrix 12 aligns with the nib of counterdie is upper and lower.The core of being made up of the rear end is fixed together and leading section is unsettled last core 3 and following core 4 is fixed in the die holder 1, the nib 311 of last core 3 and the nib 411 of following core 4 also with upper and lower alignment of nib of the nib 1201 and the counterdie of patrix 12.Set firmly a spacer 5 on channel-section steel 11 diapires, spacer 5 has the nib 52 that aligns with the nib of counterdie.

Please referring to Fig. 2 and Fig. 3, above die holder 1 leading section, (being guide cylinder 13 back) is provided with outer clamp device 2 on the little supporting plate 123 at patrix 12 rear portions.Outer clamp device 2 comprises stepped plate 21, pressing plate 22, left and right two clamp holders 23 and extension spring 24.Stepped plate 21 left and right symmetries, anterior wide, to contract in the middle part, the rear portion is long and narrow extension.Stepped plate 21 is positioned on the little supporting plate 123, the rear end of stepped plate 21 extensions is articulated in the rear end central authorities of little supporting plate 123, a lug of upwards extending 1231 is each side established at little supporting plate 123 middle parts, each lug 1231 is provided with one and adjusts screw, two sides of adjusting screw from left and right both direction difference roof pressure stepped plate 21 middle part correspondences, change two degree of adjusting screws precession or back-out on corresponding lug 1231, the axis that can adjust stepped plate 21 is to neutrality.Passing adjustment slot to make way 211 to 211, one screws of adjustment slot to make way that extend about the middle part of stepped plate 21 has is fixed on stepped plate 21 on the little supporting plate 123.

The rear end of two clamp holders 23 is placed on the front portion of stepped plate 21, and pressing plate 22 is placed on above the rear end of two clamp holders 23.The rear end of two clamp holders 23 is respectively equipped with gear part 231, and these two gear part, 231 mutual interlocks. two screws are distinguished the via hole at pressing plate 22 two ends and the axis hole of two clamp holder 23 rear end gear part 231, the rear end of two clamp holders 23 are hinged on the front portion of stepped plate 21.The front end of two clamp holders 23 is respectively equipped with the curved boom of downward extension, pulley 232 of the installed inside of each curved boom lower end; Two pulleys 232 pass respectively that corresponding window 122 stretches in the die holder 1 on window 122 corresponding on the die holder 1 and two connecting plates 121.Extension spring 24 is located between the front end of two clamp holders 23, and the pulley 232 of two clamp holders 23 is as far as possible inwardly pressed in linkage.

Please referring to Fig. 4 and Fig. 5: on the axis of symmetry of spacer 5 from after have successively forward before and after to the draw-in groove 51, screw 53, nib 52 and the screw 53 that extend.Two screws pass corresponding via hole on via hole on the base plate 112 and channel-section steel 11 diapires respectively and screw togather the screw 53 corresponding with spacer 5, and the nib 52 of spacer 5 is alignd with the counterdie nib.Screw 115 on channel-section steel 11 left and right two sidewalls holds out against two sides of spacer 5 rear ends respectively from both sides.Can observe the draw-in groove 51 of spacer 5 rear ends by via hole corresponding on peep hole on the base plate 112 1122 and channel-section steel 11 diapires, change the degree of two screws 115 precession or back-out on channel-section steel 11 corresponding sidewalls, can adjust spacer 5 draw-in groove 51 relative channel-section steels 11 to neutrality.

The rear end of die holder 1 is provided with an adjustment rack 15, and please referring to Fig. 6: adjustment rack 15 has sliding sleeve 151 and 152 two major parts of support body.Sliding sleeve 151 is for having the rectangular block shape body of vertical axis hole 1511, and sliding sleeve 151 upper surfaces have the last screw 1512 that connects axis hole 1511, and sliding sleeve 151 lower surfaces have the following screw (not shown among Fig. 6) that connects axis hole 1511.A recessed platform 1522 is left to accept the rearward end of core 3 in the front portion of support body 152, has major part on this platform 1522 at last stairstepping positioning screw hole 1523; The middle part of support body 152 is provided with the smaller circular shaft of diameter 1524, and the rear end of support body 152 is that external diameter is followed little screw rod 1521.

The details of die holder 1 rearward end structure is please referring to Fig. 7, Fig. 8 and Fig. 9.The rear end upper side wall of rectangular steel tube 10 is left a gap 101, and lower wall has a window 102; The notch 103 of the lower wall end of rectangular steel tube 10 rear ends pieces together a sagittal elongated slot with the notch 141 of the lower wall of square tube 14, and the rear wall of square tube 14 has via hole.Sliding sleeve 151 is placed in the elongated slot top of rectangular steel tube 10 rear ends, and the elongated slot that first screw 154 passes rectangular steel tube 10 and square tube 14 rear end lower wall is screwed together in the following screw of sliding sleeve 151, sliding sleeve 151 is fixed on the rear end of die holder 1.Make the screw rod 1521 of support body 152 pass the axis hole 1511 of sliding sleeve 151 and screw togather first nut 155; And then the circular shaft 1524 that makes support body 152 is set in the axis hole 1511 of sliding sleeve 151, and the screw rod 1521 of support body 152 passes the via hole of die holder 1 rear end square tube 14 rear walls, screws togather second nut 156 again on screw rod 1521.Rotate support body 152, the platform 1522 of support body 152 is horizontal after, second screw 153 be screwed together in the last screw 1512 of sliding sleeve 151 and lock the circular shaft 1524 of support body 152.

Figure 10 shows the structure of core.Core is made up of last core 3 and 4 two elongated rod like parts of following core.

The structure of last core 3 is please referring to Figure 11, Figure 13, Figure 14, Figure 15 and Figure 16: go up core 3 and be made up of the last die shank 32 of last hard alloy blocks 31 that has nib 311 and strip.Last hard alloy blocks 31 is identical with the width of last die shank 32, is slightly less than the width of band steel pipe and square steel tube endoporus.The thickness of last hard alloy blocks 31 is corresponding with the height of band steel pipe orifice, and greater than the thickness of last die shank 32.The rear end face central authorities of last hard alloy blocks 31 extend back the connecting portion 312 of a T shape, and this connecting portion 312 is inlayed in the T-slot of leading section 321 correspondences that are fixed on die shank 32.The upper surface of last hard alloy blocks 31 is concordant with the upper surface of last die shank 32, and the lower surface of last hard alloy blocks 31 is lower than the lower surface of going up die shank 32.Leading section 321 front sides of last die shank 32 are offered translot 323 one, are provided with in the automatic accent in the translot 323 and install 33.Automatically device 33 is made up of 331,332, extension springs 333 of two " fourth " type bullet pieces and two bearing pins 334,335 in transferring.The right side of translot 323 bearing pin 334 hinged bullet pieces 331, the mutual interlock of toothed region of hinged place, bearing pin 332, two bullet piece 331,332 middle parts of 334 hinged bullet pieces of the left side of translot 323; Extension spring 33 is located between the rear end of two bullet pieces 331,332, makes their front end upwards leading section 321 and arranged on left and right sides of die shank 32 ejection in linkage.Leading section 321 rear sides of last die shank 32 are provided with the draw-in groove 322 of setting to the axis of symmetry along front and back.The lower surface of the rearward end 326 of last die shank 32 is provided with a positioning screw hole 36 and is provided with a lug 34 that extends downwards at the rear of screw 36, has via hole 341 on the lug 34.Last die shank 32 rearward end 326 are provided with the locating hole 351 of a setting and are provided with a positioning boss 35 to lower convexity at last die shank 32 rearward end 326 lower surfaces around locating hole 351 after being positioned at lug 34.

The structure of following core 4, please referring to Figure 12, Figure 13, Figure 15 and Figure 16: following core 4 is made up of the following die shank 42 and the guiding tongue 43 of the following hard alloy blocks 41 that has nib 411, strip.The width of following hard alloy blocks 41, time die shank 42 and the tongue 43 that leads is identical, is slightly less than the width of band steel pipe and square steel tube endoporus.The front portion of guiding tongue 43 is " U " font elbow of traverse.The middle part is for having the flat board of nib 431, and the rear portion is slightly upwards curved.The rear portion of guiding tongue 43 is welded on down in the groove of die shank 42 leading sections 421 preceding side lower parts, and the lower surface of guiding tongue 43 is concordant with the lower surface of following die shank 42.Following hard alloy blocks 41 is arranged on the top, middle part of guiding tongue 43, and the nib 411 of following hard alloy blocks 41 aligns with the nib 431 of guiding tongue 43.Extended T shape connecting portion 412 is inlayed in the T-slot of leading section 421 correspondences that are fixed on down die shank 42 behind the rear end face mediad of following hard alloy blocks 41.The upper surface of following hard alloy blocks 41 is higher than the upper surface of die shank 42 down.Following hard alloy blocks 41 adds the thickness of the thickness of guiding tongue 43 greater than following die shank 42.Last hard alloy blocks 31 is corresponding with the height of square steel tube endoporus with the thickness sum of following hard alloy blocks 41.The postmedian of following die shank 42 leading sections 421 has the grooving 422 of one setting to the axis of symmetry along front and back, swing clamping mechanism 44 is set in the grooving 422.The rotating shaft 441 of swing clamping mechanism 44 is articulated in the fan-shaped pendulum 442 of front and back to the setting of extending in the grooving 422.The rearward end of following die shank 42 be provided with major part under stairstepping via hole 423, the rear end face of following die shank 42 is provided with the screw rod 424 that extends back.

Please referring to Figure 15 and Figure 16: the screw rod 424 of following die shank 42 rear ends screws togather the via hole 341 that passes die shank 32 rear end lugs 34 behind the nut 426, screws togather another nut 427 again.Between the rearward end of last die shank 32 rearward end 326 and following die shank 42, a pad 37 is set, passes down the stairstepping via hole 423 of die shank 42 rearward end and the positioning screw hole 36 that pad 37 is screwed together in die shank 32 rearward end 326 with dog screw 425 again.Locking is two nuts 426,427 on the screw rod 424 of die shank 42 rear ends down, make it to clamp the lug 34 of die shank 32 rearward end 326.

So far, the core that last core 3 and following core 4 are connected as a single entity, please referring to Figure 12 and Figure 13: upward nib on the core 3 and the upper and lower alignment of nib on this time core 4, the fan-shaped pendulum 442 on the following core 4 snaps in the draw-in groove 322 of core 3 turningly.Guiding tongue 43 on the following core 4 protrudes in the front end face of core 3.

Core is inserted in the die holder 1, please referring to Fig. 7, Fig. 8 and Fig. 9: last die shank 32 rearward end 326 of core 3 are ridden against on the platform 1522 of support body 152, the positioning boss 35 of last die shank 32 rearward end 326 is stuck in the enlarged head of support body 152 platforms 1522 stairstepping positioning screw holes 1523, pass the locating hole 351 of die shank 32 rearward end 326 and be screwed together in the stairstepping positioning screw hole 1523 of support body 152 platforms 1522 with dog screw 37, finally finish assembling.The core of being made up of last core 3 and following core 4 is fixed in the die holder 1, this core rear end be fixed on the rear end of die holder 1 and the front end of this core in unsettled state, please referring to Figure 17.

In the time of need stamping out circular hole on band steel pipe 6, please referring to Figure 18: the upper surface of the guiding tongue 43 of core 4 front ends inserts in the die holder 1 and overlaps core 3 under band steel pipe 6 edges, and last core 3 becomes " core " of punching press band steel pipe 6; And the fan-shaped pendulum of erectting on the following core 4 442 is pushed and snaps in the draw-in groove 52 of spacer 5 on the counterdie by the lower wall outer surface of band steel pipe 6; Following core 4 is connected with counterdie by spacer 5, and following core 4 becomes " counterdie " of punching press band steel pipe 6.Automatically two bullet pieces 332,331 of device 33 roof pressure band steel pipe 6 left and right sidewalls internally make band steel pipe 6 and core automatic centering in transferring on the last core 3.Pulley 232 outside simultaneously on die holder 1 on two clamp holders 23 of clamp device 2 passes window 122,113 corresponding on the die holder 1 respectively and stretches in the die holder 1, from the left and right sidewall of outside roof pressure band steel pipe 6, make patrix 12 and counterdie automatic centering on band steel pipe 6 and the die holder 1.Make each nib axis overlap all the time, the nib that has guaranteed upper and lower core 3,4 can not processed the change of operating type and be damaged.

In the time of need on square steel tube 7, stamping out circular hole, please referring to Figure 19: the lower surface of the guiding tongue 43 of core 4 front ends inserts in the die holder 1 and overlaps core 3 and following core 4 under square steel tube 7 edges, the fan-shaped pendulum of erectting on the following core 4 442 is snapped in the draw-in groove 322 of core 3 by the pushing of the lower wall inner surface of square steel tube 7, last core 3 and following core 7 are connected as a single entity, and form " core " of punching press square steel tube 7.Automatically two bullet pieces 332,331 of device 33 roof pressure square steel tube 7 left and right sidewalls internally make square steel tube 7 and core automatic centering in transferring on the last core 3.Pulley 232 outside simultaneously on die holder 1 on two clamp holders 23 of clamp device 2 passes window 122,113 corresponding on the die holder 1 respectively and stretches in the die holder 1, from the left and right sidewall of outside roof pressure square steel tube 7, make patrix 12 and counterdie automatic centering on square steel tube 7 and the die holder 1.Make each nib axis overlap all the time, the nib that has guaranteed upper and lower core 3,4 can not processed the change of operating type and be damaged.

The above only is the utility model preferred embodiment, does not limit the scope that the utility model is implemented with this, and the equivalence of doing according to the technical solution of the utility model and description changes and modification, all should belong to the scope that the utility model is contained.

Claims (5)

1. dual-purpose punching die sets firmly patrix, core and the counterdie of the nib with upper and lower alignment from top to bottom successively in the die holder; This core is a strip, on the rear end that its leading section is unsettled, die holder is fixed in the rear end; Two bullet pieces that eject to the left and right sides in linkage are set in this core; The outer clamp device that is provided with on this die holder comprises left and right two clamp holder and extension springs that have gear part, curved boom and pulley, and the pulley of two clamp holders passes window corresponding on the die holder in linkage respectively and stretches in the die holder; It is characterized in that: last core that this core is fixed together by the rear end and leading section is unsettled and following core are formed; The thickness that should go up core is corresponding with the height of band steel pipe orifice, and last core is corresponding with the height of square steel tube endoporus with the thickness sum of following core; Should go up the nib that is respectively equipped with upper and lower alignment on core and this time core; Described two bullet pieces are located on the core; Should go up core and be provided with the draw-in groove of front and back to the setting of extending, this time core is provided with the fan-shaped pendulum of front and back to the setting of extending; Set firmly a spacer on this counterdie, this spacer has the nib that aligns with the counterdie nib and front and back to the draw-in groove that extends; Fan-shaped pendulum on this time core snaps into turningly in the draw-in groove of spacer on this counterdie and maybe should go up in the draw-in groove of core.

2. dual-purpose punching die according to claim 1 is characterized in that: the described front end of core down is provided with the guiding tongue, and this guiding processus hyoideus is for the front end face of last core.

3. dual-purpose punching die according to claim 1 and 2 is characterized in that: the rear end of described die holder is provided with an adjustment rack, and this adjustment rack has sliding sleeve and support body; This sliding sleeve is the rectangular block shape body that has vertical axis hole, and its upper surface has the last screw that connects axis hole, and its lower surface has the following screw that connects axis hole; A recessed platform is left to accept the rearward end of core in the front portion of support body, has major part on this platform at last stairstepping positioning screw hole; The middle part of support body is provided with circular shaft, and the rear end of support body is a screw rod; The rear end of die holder is the square tube that the upper end is opened wide, the elongated slot that extends before and after the lower wall of die holder rear end has, and the rear wall of die holder rear end has via hole; This sliding sleeve is placed in the elongated slot top of this die holder rear end, and the elongated slot that first screw passes this die holder rear end lower wall is screwed together in the following screw of this sliding sleeve, this sliding sleeve is fixed on the rear end of this die holder; The round sleeve of this support body is loaded in the axis hole of this sliding sleeve, and the screw rod of this support body screws togather the via hole that passes this die holder rear end rear wall behind first nut, screws togather second nut again; Second screw is screwed together in the last screw of this sliding sleeve and locks the circular shaft of this support body; Should go up the core rearward end is provided with the locating hole of a setting and is provided with a positioning boss to lower convexity at its lower surface around this locating hole; Should go up the core rearward end rides against on the platform of this support body, the positioning boss that should go up the core rearward end is stuck in the enlarged head of this support body platform stairstepping positioning screw hole, and a dog screw passes the locating hole of core rearward end on this and is screwed together in this support body platform stairstepping positioning screw hole.

4. dual-purpose punching die according to claim 3 is characterized in that: the described lower surface of going up the rearward end of core is provided with a positioning screw hole and is provided with a lug that extends downwards at the rear of this screw, has via hole on this lug; The rearward end of described down core be provided with major part under the stairstepping via hole and the rear end face of this time core be provided with the screw rod that extends back; The screw rod of described down core rear end screws togather the via hole that passes core rear end lug on this behind the nut, screws togather another nut again; A dog screw passes the described stairstepping via hole of core rearward end down and is screwed together in the described positioning screw hole of going up the core rearward end.

5. dual-purpose punching die according to claim 4, it is characterized in that: the described core of going up is made up of the last die shank of last hard alloy blocks that has nib and strip, and hard alloy blocks is fixed on the front end of die shank and is somebody's turn to do the lower surface that the lower surface of going up hard alloy blocks is lower than die shank on this on this; Described down core comprises the following hard alloy blocks that has nib and the following die shank of strip, and the upper surface that this time hard alloy blocks is fixed on the front end of this time die shank and this time hard alloy blocks is higher than the upper surface of this time die shank; Upward be provided with a pad between the rearward end of die shank rearward end and this time die shank, this pad is set on the described dog screw.

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