CN208628262U - Bending forming die - Google Patents

Abstract

The utility model discloses a kind of bending forming die, including punch assemblies, cavity plate component and stretch bending mechanism, wherein punch assemblies include convex mould base and punch-pin, cavity plate component includes the die socket and cavity plate being oppositely arranged with convex mould base, one of convex mould base and die socket are driven toward another party's movement, so that the cavity plate is matched with the punch-pin.Stretch bending mechanism includes multiple stretch bending fixed blocks for fixing workpiece side, between the convex mould base and die socket, the multiple stretch bending fixed block is moved adjacent to the position of punch-pin side wall by driving from the position far from punch-pin side wall, to cooperate stretch bending workpiece with punch-pin, the cavity plate is matched with the punch-pin with molded workpiece.The utility model effectively reduces the stress of inside workpiece in forming process using the combination of two kinds of prototyping methods, the friction in traditional handicraft between workpiece surface and mold is reduced, to effectively reduce the scratch that the workpiece such as bool or hollow object generate in forming process.

Description

Bending forming die

Technical field

The utility model relates to mold machining technology fields, and in particular to a kind of bending forming die.

Background technique

In mold production process, especially in the mold production and processing of auto parts, it is often necessary to produce bool or sky Heart part.In the prior art, Sheet Metal Forming Technology is generallyd use to process workpiece.By taking the molding of U-board as an example, lead in the prior art Often set up the punch-pin and cavity plate being mutually matched separately on cavity plate component and punch assemblies, workpiece is located in punch assemblies by blank holder Side, the cavity plate component is mobile to the punch assemblies, so that the punch-pin is matched with the cavity plate, the workpiece quilt Pressing Deformation fills the gap between punch-pin and cavity plate to form.This stamping forming processing method is also referred to as drawing and forming, Plate thickness after molding influences timber intensity smaller without significant change, while having many advantages, such as high production efficiency.

But traditional molding mode is easy to cause scratch in workpiece surface.This is because during punch forming, Impulse force is larger, inside workpiece stress is larger, and workpiece surface relative to cavity plate flange and press surface slide, usually because Friction causes plate surface to deform and generate scratch.

Utility model content

In order to solve the above technical problems, the main purpose of the utility model is to provide a kind of bending forming dies, it is intended to Punch forming mode traditional in the prior art is solved when producing bool or hollow object, is easy to cause scratch in workpiece surface The technical issues of.

The utility model provides a kind of bending forming die, comprising:

Punch assemblies, the punch-pin including convex mould base and set on the convex mould base side；

Cavity plate component including the die socket being oppositely arranged up and down with the convex mould base and is set to the die socket side And cavity plate compatible with the punch-pin, one of the convex mould base and the die socket are driven, direction in above-below direction Another party is mobile, so that the cavity plate is matched with the punch-pin；And

Stretch bending mechanism, including multiple stretch bending fixed blocks for fixing workpiece side, the multiple stretch bending fixed block can live It is set between the convex mould base and the die socket dynamicly；

Wherein, the stretch bending mechanism has the multiple stretch bending fixed block horizontally far from the punch-pin and upper First working condition of the lower direction far from the convex mould base, and horizontally lean on close to the punch-pin and in above-below direction Second working condition of the nearly convex mould base；

The multiple stretch bending fixed block and/or the convex mould base are driven, so that the stretch bending mechanism is by the first work shape State is changed into the second working condition, to cooperate workpiece described in stretch bending with the punch-pin；Also, the cavity plate and the punch-pin match It closes so that the workpiece shaping.

It is preferred that the cavity plate includes multiple cavity plate sliding blocks, the multiple cavity plate sliding block is in square upward sliding close to each other It is installed on the die socket, to be enclosed matrix cavity jointly when close to each other；

The bending forming die further includes cavity plate driving mechanism, to lean on the convex mould base is opposite with the die socket In close stroke, the multiple cavity plate sliding block is driven to slide to direction close to each other.

It is preferred that the cavity plate driving mechanism includes driving inclined-plane and driving auxiliary section, the driving inclined-plane and the driving One of auxiliary section is set on each cavity plate sliding block, another to be set in the punch assemblies；The driving inclined-plane is in direction On the direction of the convex mould base, it is obliquely installed towards the direction of the punch-pin；In the convex mould base and the die socket in upper and lower Into stroke close to each other, the driving auxiliary section is matched with the driving inclined-plane, by the convex mould base and the cavity plate The upper and lower sliding action for being changed into the multiple cavity plate sliding block close to movement between seat.

It is preferred that the driving auxiliary section is idler wheel or sliding block on each cavity plate sliding block；The driving inclined-plane is Set on the convex mould base, and the arcwall face recessed to the convex mould base direction.

It is preferred that in the die socket and the convex mould base in above-below direction stroke close to each other, the multiple cavity plate Sliding block correspondence is abutted with the multiple stretch bending fixed block, with the multiple stretch bending fixed block of Linear Driving towards close to the punch-pin Direction sliding.

It is preferred that the cavity plate sliding block is equipped with insert, the stretch bending fixed block is equipped with and the matched fixation of insert shape Block, the insert are mutually clamped in the convex mould base stroke relatively close with the die socket with the fixed block, with folder If the workpiece, and the cavity plate sliding block is made to be connected to the stretch bending fixed block.

It is preferred that the die socket is driven toward, the convex mould base is mobile, and the stretch bending mechanism includes pedestal, the multiple Stretch bending fixed block can laterally slidably be set to the pedestal on, the pedestal be set to up or down the convex mould base with it is described recessed Between die holder, in the die socket in the stroke of the convex mould base, the pedestal is driven mobile towards the convex mould base.

It is preferred that the pedestal is resiliently supported installation, the elastic bearing dress by resilient supporting unit in above-below direction It is set to the pedestal and reset force is provided, in stroke of the die socket far from the convex mould base, so that the pedestal is upper and lower Direction is supported by the resilient supporting unit, and the direction for being directed away from the convex mould base is mobile to reset.

It is preferred that the stretch bending mechanism includes the fixed module resetting mechanism of stretch bending, the fixed module resetting mechanism of the stretch bending includes chain Item and sprocket wheel set on the pedestal, described chain one end are laterally extended and connect at least one described stretch bending fixed block, separately One end vertically extends and connects the punch assemblies after being oriented to by the sprocket wheel, in the pedestal far from the punch-pin In the return stroke of seat, at least one described stretch bending fixed block of the chain-driving is horizontally far from the punch-pin side wall with multiple Position.

It is preferred that the convex mould base is connect with the pedestal by the stripper bolt that up and down direction extends；And/or

Be arranged on the convex mould base and the pedestal guide post vertically extended and with the guide post phase The pilot hole of cooperation；And/or

Be arranged on the die socket and the convex mould base vertically extend guide legs and with the guide legs phase Leg guide plate is led in cooperation.

Bending forming die provided by the utility model makes workpiece bending forming by the cooperation of stretch bending mechanism and punch-pin, Keep workpiece molded by the cooperation of punch-pin and cavity plate, the combination of two kinds of prototyping methods effectively reduces inside workpiece in forming process Stress.And the opposite sliding in conventional ones technique between the components such as workpiece surface and press surface, cavity plate is reduced, work is reduced Friction between part and mold component, to effectively reduce stroke that the workpiece such as bool or hollow object generate in forming process Trace.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor Under, the structure that can also be shown according to these attached drawings obtains other attached drawings.

Fig. 1 is the sectional view of one embodiment of bending forming die provided by the utility model；

Fig. 2 is the schematic perspective view of Fig. 1 convexity die holder；

Fig. 3 is the schematic perspective view of Fig. 1 convex mould；

Fig. 4 is the schematic perspective view of die socket in Fig. 1；

Fig. 5 is the schematic perspective view of Fig. 1 concave mode slider；

Fig. 6 is the schematic perspective view of Tu1Zhong stretch bending mechanism.

Drawing reference numeral explanation:

Label	Title	Label	Title
				100	Punch assemblies	14	Lead leg guide plate
101	Convex mould base	15	Guide post
				102	Punch-pin	20	Nitrogen gas spring
200	Cavity plate component	21	Idler wheel
				201	Die socket	22	Lead-in chamfered
202	First cavity plate sliding block	23	Insert
				203	Second cavity plate sliding block	24	First guiding surface
300	Stretch bending mechanism	25	Guide legs
				301	Pedestal	30	Fixed block
302	First stretch bending fixed block	31	Chain
				303	Second stretch bending fixed block	32	Sprocket wheel
10	Positioning key	33	Chain spring
				11	First driving inclined-plane	34	Second guiding surface
12	Second driving inclined-plane	35	Pilot hole
				13	Locating slot	36	Stripper bolt

The realization, functional characteristics and excellent effect of the utility model aim, below in conjunction with specific embodiment and attached drawing It is described further.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describing, it is clear that described embodiment is only a part of the embodiment of the utility model, rather than all Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise Under every other embodiment obtained, fall within the protection scope of the utility model.

It is to be appreciated that directionality instruction is only used for solving if relating to directionality instruction in the utility model embodiment Relative positional relationship, the motion conditions etc. between component each under a certain particular pose are released, if the particular pose changes When, then directionality instruction also correspondingly changes correspondingly.

In addition, if relating to the description of " first ", " second " etc. in the utility model embodiment, " first ", " the Two " etc. description is used for description purposes only, and is not understood to indicate or imply its relative importance or is implicitly indicated meaning The quantity of the technical characteristic shown." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one A this feature.It in addition, the technical solution between each embodiment can be combined with each other, but must be with ordinary skill Based on personnel can be realized, this technical side will be understood that when the combination of technical solution appearance is conflicting or cannot achieve The combination of case is not present, also not within the protection scope of the requires of the utility model.

In the prior art, it generallys use Sheet Metal Forming Technology to process workpiece to produce bool or hollow object, but passes The Sheet Metal Forming Technology of system is easy to cause scratch in workpiece surface.For this purpose, the utility model is intended to provide a kind of bending forming die, with Effectively reduce the scratch generated in forming process.Fig. 1 to Fig. 6 is the one of a kind of bending forming die provided by the utility model Embodiment.

For convenience of description, in the present invention, the convex mould base 101 relatively moves close with the die socket 201 Direction is up and down direction, is transverse direction perpendicular to all directions in the plane of the up and down direction, wherein " towards convex mould base Direction " refers both to the direction towards convex mould base in the up-down direction, and " towards the direction of punch-pin " refers both to horizontally towards punch-pin Direction direction.The above-mentioned definition to direction does not constitute the limitation to scope of protection of the utility model, is only used for explaining a certain Relative positional relationship, motion conditions under particular pose between each component etc..

Referring specifically to Fig. 1, in the present embodiment, the bending forming die includes punch assemblies 100, cavity plate component 200 and stretch bending mechanism 300.The punch assemblies 100 include convex mould base 101 and the punch-pin set on 101 side of convex mould base 102.Positioning key 10 and locating slot 13 are arranged on the punch-pin 102 and the convex mould base 101, the punch-pin 102 passes through described The cooperation of positioning key 10 and locating slot 13 is installed on the side of the convex mould base 101.The cavity plate component 200 includes and institute State die socket 201 that about 101 convex mould base is oppositely arranged and be set to 201 side of die socket and with 102 phase of punch-pin The cavity plate of adaptation, one of them is driven for the convex mould base 101 and the die socket 201, is moved in above-below direction towards another party It is dynamic, so that the cavity plate is matched with the punch-pin 102 so that the workpiece shaping.The convex mould base 101 or die socket 201 Driving method with no restriction, in the present embodiment, the convex mould base 101 or the die socket 201 are driven (in figure using punching machine It is not shown), specific punching machine structure belongs to content known in the art, and details are not described herein.

The stretch bending mechanism 300 includes multiple stretch bending fixed blocks 302,303 for fixing workpiece side, the multiple drawing Curved fixed block 302,303 is movably arranged between the convex mould base 101 and the die socket 201.The stretch bending mechanism 300 tool Have: the multiple stretch bending fixed block 302,303 is horizontally far from the punch-pin 102, and in above-below direction far from the punch-pin First working condition of seat 101；And horizontally close to the punch-pin 102, and in above-below direction close to the convex mould base 101 The second working condition.The multiple stretch bending fixed block 302,303 and/or the convex mould base 101 are driven, so that the stretch bending Mechanism 300 is the second working condition by the first active state, to cooperate workpiece described in stretch bending with the punch-pin 102.

The specific number and arrangement of the multiple stretch bending fixed block 302,303 are designed according to the specific structure of workpiece, In the present embodiment, referring specifically to Fig. 1 to Fig. 3, the multiple stretch bending fixed block includes being respectively used to fixed workpiece both ends First stretch bending fixed block 302 and the second stretch bending fixed block 303.The stretch bending mechanism 300 includes the first stretch bending fixed block 302 and second stretch bending fixed block 303 be horizontally respectively further from 102 two sides of punch-pin, and in above-below direction far from described convex 101 the first working condition of upside of die holder；And horizontally respectively close to 102 two sides of punch-pin, and it is close in above-below direction Second working condition of 101 upside of convex mould base.

The stretch bending mechanism 300 by first the second working condition of active state can by the stretch bending fixed block 302, 303 are realized by driving, can also be moved up and down and realize by driving by the punch-pin 102, can also be by the stretch bending fixed block 302,303 realization is moved up and down by driving by the laterally driven while punch-pin 102.It is located at the punch assemblies 100 described For 200 lower section of cavity plate component, in the first embodiment, the position of the punch-pin 102 is constant, and the multiple stretch bending is fixed Block is driven in the laterally upper side wall close to the punch-pin 102, while being moved to and leaning on from the position close to 102 upper end of punch-pin The position of nearly lower end, to make the stretch bending mechanism 300 by first the second working condition of active state.

In the second embodiment, the multiple stretch bending fixed block 302,303 can laterally slidably be set to the punch-pin Between seat 101 and the die socket 201, the punch-pin 102 is driven to be moved from bottom to top, the multiple stretch bending fixed block 302, 303 the displacement of up and down direction does not occur, and since the traction of the workpiece is horizontally mobile to the direction of the close punch-pin, To make the stretch bending mechanism 300 by first the second working condition of active state.

In the third embodiment, the punch-pin 102 is driven to be moved from bottom to top, while the multiple stretch bending is fixed Block 302,303 is horizontally driven from two sides close to the punch-pin 102, to make the stretch bending mechanism 300 by the first work State is changed into the second working condition.

Due to the fixed workpiece side of the multiple stretch bending fixed block 302,303, and occur relatively with the punch-pin 102 Displacement, the multiple stretch bending fixed block 302,303 downwards, inwardly pulls the workpiece side, to be bonded the punch-pin 102, It is plastically deformed the workpiece, thus workpiece described in stretch bending.Also, wherein due to the convex mould base 101 and the die socket 201 One of be driven toward that another party is mobile, and the cavity plate and the punch-pin 102 are moved closer to mutual cooperation, further make described Workpiece shaping.

Bending forming die provided by the utility model is made by the stretch bending mechanism 300 and the cooperation of the punch-pin 102 The workpiece bending forming, while keeping workpiece molded by the cooperation of the punch-pin 102 and the cavity plate, two kinds of prototyping methods Combination effectively reduce the stress of inside workpiece in forming process.And reduce workpiece surface and flanging in conventional ones technique Opposite sliding between the components such as face, cavity plate, reduces the friction between workpiece and mold component, thus effectively reduce bool or The scratch that the workpiece such as hollow object generate in forming process.

Further, in order to avoid the opposite sliding between the cavity plate cavity inner wall and the workpiece surface, institute as far as possible Stating cavity plate includes multiple cavity plate sliding blocks 202,203.The specific number of the multiple cavity plate sliding block 202,203 can be according to practical need It is configured, specifically, in the present embodiment, please refers to Fig. 4 and Fig. 5.The cavity plate includes the first cavity plate sliding block 202 and the Two cavity plate sliding blocks 203 are slidably mounted on the die socket 201 on direction close to each other, to enclose jointly when close to each other Conjunction forms matrix cavity.The bending forming die further includes cavity plate driving mechanism, in the convex mould base 101 and the cavity plate In 201 relatively close strokes of seat, drive the first cavity plate sliding block 202 and the second cavity plate sliding block 203 to side close to each other To sliding, forms matrix cavity and the punch-pin 102 cooperates, fill the workpiece between the punch-pin 102 and the matrix cavity Gap to form.

Since split settings are multiple cavity plate sliding blocks 202,203 to the cavity plate before the workpiece shaping, in the workpiece Moved closer to during stretch bending or after stretch bending the workpiece, the movement of the cavity plate sliding block 202,203 and the workpiece Deformation it is synchronous, to reduce the opposite sliding between the workpiece surface and cavity plate cavity wall, cavity plate accent flange, relative to General Sheet Metal Forming Technology, the phenomenon that being effectively reduced during workpiece shaping because of friction generation scratch.

There are many forms of the cavity plate driving mechanism, such as can be by mechanical arm driving, by motor and machinery Transmission mechanism driving is joined by the Taper Wedge Actuating Mechanism or crank block transmission mechanism that are arranged between convex mould base and cavity plate Dynamic driving etc..Specifically, Fig. 2 and Fig. 5 are please referred to.The cavity plate driving mechanism includes driving inclined-plane 11,12, and with the drive The driving auxiliary section 21,22 that dynamic inclined-plane 11,12 cooperates, the driving inclined-plane 11,12 and the driving auxiliary section 21,22 wherein it One is set on each cavity plate sliding block, another to be set to the punch assemblies 100, be preferably disposed on the convex mould base 101.In this reality It applies in example, the driving inclined-plane 11,12 is arranged on convex mould base 101, and to institute on the direction towards the convex mould base 101 The direction for stating punch-pin 102 is obliquely installed.Specifically, it is divided into including being tilted towards from 102 periphery of punch-pin towards the direction of the punch-pin 102 The first driving inclined-plane 11 and the second driving inclined-plane 12 set.The driving auxiliary section 21,22 includes being arranged in first cavity plate Sliding block 202 and idler wheel 21 and lead-in chamfered 22 on the second cavity plate sliding block 203.

In the stroke that the convex mould base 101 is relatively close to the die socket 201, first driving inclined-plane 11 and institute The cooperation of idler wheel 21 is stated, second driving inclined-plane 12 is matched with the lead-in chamfered 22.So that the convex mould base 101 and institute The relative motion up and down stated between die socket 201 is changed into the first cavity plate sliding block 202 and by the cavity plate driving mechanism The sliding action of two cavity plate sliding blocks 203, and tilted since the driving inclined-plane 11,12 is disposed towards the punch-pin 102, The first cavity plate sliding block 202 and the second cavity plate sliding block 203 are close to each other in the convex mould base 101 and the die socket 201 In stroke, be driven toward the punch-pin 102 direction it is opposite slide close, and be enclosed matrix cavity jointly, finally and institute The cooperation of punch-pin 101 is stated, so that the workpiece fills the gap between the matrix cavity and the punch-pin to form.

Since the cavity plate driving mechanism is arranged to the linkage driving machine between the convex mould base 101 and the cavity plate Structure, it is no longer necessary in addition driving mechanism be set, have the advantages that save the cost.In addition, also being made by this linkage driving mode The relative motion obtained between the sliding action and the upper and lower die holder of the multiple cavity plate sliding block 202,203 has synchronism, keeps away The situation for exempting to cause forming process fault, molding effect bad since each component synchronization degree of mold is bad occurs.

The tilted shape of the driving inclined-plane 11,12 limits the sliding stroke of the cavity plate sliding block 202,203, for this purpose, institute It states the first driving inclined-plane 11 and is arranged to recessed and arc-shaped towards the direction of the convex mould base 101 in above-below direction, the drive Dynamic auxiliary section can be the idler wheel 21 matched with the curved driving inclined-plane or sliding block etc., to keep first cavity plate sliding The lower end of block 202 and the second cavity plate sliding block 203 first reaches the punch-pin side wall 101 than upper end, to avoid the cavity plate as far as possible Cavity wall is contacted with the workpiece, influences the workpiece shaping.

The multiple cavity plate component 100 is additionally provided with cavity plate slide block resetting-mechanism, including be set to each cavity plate sliding block 202, Nitrogen gas spring 20 between 203 and the die socket 201, described 20 one end of nitrogen gas spring be fixedly connected the cavity plate sliding block 202, 203, the other end is fixedly connected with the die socket 201, in stroke of the die socket 201 far from the convex mould base 101, for institute It states cavity plate sliding block 202,203 and reset force is provided, make the multiple cavity plate sliding block 202,203 along the driving inclined-plane 11,12 to remote Direction sliding from the punch-pin, is reset to the initial position being located remotely from each other.

Preferably, the cavity plate sliding block 202,203 is synchronously driven with the stretch bending fixed block 302,303.Specifically, it asks Refering to fig. 1, in the present embodiment, the cavity plate sliding block 202,203 and the stretch bending fixed block 302,303 are in the die socket 201 it is corresponding with the convex mould base 101 in above-below direction stroke close to each other abut so that the multiple cavity plate sliding block 202, 203 opposite slidings close to when, the multiple stretch bending fixed block 302,303 of Linear Driving is towards the direction close to the punch-pin 102 Sliding.In this way, making the stretch-bending molding process of the workpiece is synchronous with punch and matrix moulding process to carry out, production efficiency is improved.

Specifically, in the present embodiment, Fig. 1, Fig. 5 and Fig. 6 are please referred to, the cavity plate sliding block 202,203 is equipped with insert 23, The stretch bending fixed block 302,303 is equipped with and the matched fixed block 30 of 23 shape of insert.The stretch bending fixed block 202,203 There are many fixed forms of the fixed workpiece side, such as can be and the modes such as set or clamps by magnetic, clamping, hook and consolidate It is fixed.In the present embodiment, the stretch bending fixed block 30 fixed workpiece, workpiece side in such a way that hook is set is equipped with hook The flange of the fixed block is hooked in portion, with the fixation workpiece.Also, the insert 23 is with the fixed block 30 described convex It is mutually clamped in the stroke relatively close with the die socket 201 of die holder 101, to cooperate workpiece side described in sandwiched, and makes The cavity plate sliding block 202,203 is connected to the stretch bending fixed block 302,303.

Preferably, first matched is arranged on the cavity plate sliding block 202,203 and the stretch bending fixed block 302,303 to lead To inclined-plane 24 and the second guiding surface 34, in the cavity plate sliding block 202,203 and the stretch bending fixed block 302,303 in upper and lower Into stroke close to each other, first guiding surface 24 interacts with second guiding surface 34, is passed by inclined wedge It moves so that the insert 23 is horizontally engaged by driving with the fixed block 30.In this way, making the cavity plate sliding block 202,203 Impaction state is kept during stretch bending fixed block 302,303 described in Linear Driving, is not easy loose shift.

In order to realize the displacement of the stretch bending fixed block 302,303 in above-below direction, in the present embodiment, referring specifically to Fig. 6, the stretch bending mechanism 300 further include pedestal 301, and the first stretch bending fixed block 302 and the second stretch bending fixed block 303 can be horizontal To being slidably set on the pedestal 301, the pedestal 301 be set in a manner of it can move up and down the convex mould base 101 with Between the die socket 201, in the die socket 101 and the convex mould base 201 stroke close to each other, the pedestal 301 It is driven towards the convex mould base 101 movement, so that the stretch bending fixed block 302,303 and the punch-pin 102 generate up and down The relative displacement in direction, with workpiece described in stretch bending.

Specifically, in the present embodiment, the cavity plate sliding block 202,203 is equipped with multiple, and stretch bending described in Linear Driving is solid Determine block 302,303.In the die socket 201 in above-below direction in the stroke of the convex mould base 101, it is sliding to pass through the cavity plate Block 202,203 drives the stretch bending fixed block 302,303 horizontally close to the punch-pin 102, also, since the stretch bending is solid Determine block 302,303 to be mounted on the pedestal 301, the cavity plate sliding block 202,203 is also lower by described in above-below direction simultaneously Stretch bending fixed block 302,303 pushes the pedestal 301, so that the pedestal 301 is mobile to the direction of the convex mould base 101.

In this way, stroke close with respect to sliding in above-below direction between the convex mould base 101 and the die socket 201 In, drive the multiple cavity plate sliding block 202,203 to slide in opposition by cavity plate driving mechanism close, cavity plate sliding block 202,203 with The stretch bending fixed block 302,303 is corresponding to abut, so that stretch bending fixed block 302,303 is horizontally close to institute described in Linear Driving Punch-pin 102 is stated, further, is arranged since the stretch bending fixed block 302,303 slides laterally in pedestal 301, the cavity plate is sliding 202,203 moving down due to the die socket 201 of block pushes the pedestal 301 by the stretch bending fixed block 302,303, makes The pedestal 301 generates opposite upper and lower displacement with the punch-pin 102.To realize the bending forming to workpiece in a process With molded synchronous progress, production efficiency is higher and can effectively avoid the generation of scratch.

The mounting means of the pedestal 301 with no restriction, as long as can be realized can be installed on the punch-pin up or down Between seat 101 and the die socket 201.For example, the convex mould base can be installed on by the piston structure extended up and down 101 or die socket 201, the slideway of up and down direction extension can also be installed on.

Further, in the present embodiment, the pedestal 301 is resiliently supported in above-below direction by resilient supporting unit Installation, the resilient supporting unit are that the pedestal 301 provides reset force.There are many forms of the resilient supporting unit, example The convex mould base 101 as described in can be and be supported on by nitrogen gas spring elastic element, can also be and be lifted on institute by hydraulic cylinder State die socket 201.In the present embodiment, the pedestal 301 is supported on the pedestal of 101 lower section of convex mould base (not by mandril Show) on, the ejector rod bottom end is supported on the pedestal by elastic element, the elastic element can be rubber, cylinder or Spring etc..In this way, the resilient supporting unit passes through in the stroke that the die socket 201 is relatively distant from the convex mould base 101 Elastic reset power makes the pedestal 301 mobile to reset towards the direction far from the convex mould base 101 in above-below direction.

Further, Fig. 1 and Fig. 6 are please referred to, stating stretch bending mechanism 300 further includes the fixed module resetting mechanism of stretch bending, specifically The fixed module resetting mechanism of the stretch bending includes chain 31 and the sprocket wheel 32 set on the pedestal 301, and described 31 one end of chain is horizontal To a few stretch bending fixed block 302,303 is extended and connected to, the other end is vertically square after being oriented to by the sprocket wheel 32 To extending and connect the punch assemblies 100, in return stroke of the pedestal 301 far from the convex mould base 102, the chain Item 31 drives at least one described stretch bending fixed block 302,303 horizontally far from the punch-pin 101 to reset.Preferably, described The chain spring 33 that setting keeps the chain 31 to be tensioned on chain 31.It so, it is possible to synchronize the stretch bending fixed block 302,303 With the homing action of the pedestal 301, without separately setting resetting apparatus.

Due to opposite sliding in above-below direction respectively between the convex mould base 101, die socket 201 and pedestal 301, in order to keep away Exempt to influence workpiece shaping because of mutual dislocation between three.In the present embodiment, the convex mould base 101 passes through with the pedestal 301 The stripper bolt 36 that up and down direction extends connects, and is limited by stripper bolt 36 to relative motion between the two.Institute State be arranged on convex mould base 101 and the pedestal 301 guide post 15 vertically extended and with 15 phase of guide post The pilot hole 35 of cooperation.Be arranged on the die socket 201 and the convex mould base 101 vertically extend guide legs 25 and Leg guide plate 14 is led with what the guide legs 25 matched.In this way, making the convex mould base by above-mentioned limit and guiding mechanism 101, die socket 201 and pedestal 301 steadily simultaneously can relatively move to accurate positioning in entire molding and reseting procedure, thus Guarantee the Forming Quality of workpiece.

In the technical scheme of this embodiment, bending forming die is specifically applicable to the molding of U-board, it is possible to understand that It is that the utility model is not limited to U-board molding die, as long as bool, hollow object etc. need punch-die to cooperate molding mould Tool each falls within the protection scope of the utility model, and those skilled in the art can design according to the concrete shape of workpiece shaping is corresponding Punch assemblies 100, cavity plate component 200 and stretch bending mechanism 300.

The above is only the preferred embodiments of the utility model, and therefore it does not limit the scope of the patent of the utility model, all Equivalent structure made based on the specification and figures of the utility model is applied directly or indirectly in other relevant technologies Field is also included in the patent protection scope of the utility model.

Claims (10)

1. a kind of bending forming die characterized by comprising

Punch assemblies, the punch-pin including convex mould base and set on the convex mould base side；

Cavity plate component, including with the convex mould base up and down the die socket that is oppositely arranged and be set to the die socket side and with The compatible cavity plate of the punch-pin, one of the convex mould base and the die socket are driven, in above-below direction towards another Fang Yidong, so that the cavity plate is matched with the punch-pin；And

Stretch bending mechanism, including multiple stretch bending fixed blocks for fixing workpiece side, the multiple stretch bending fixed block is movably Between the convex mould base and the die socket；

Wherein, the stretch bending mechanism has the multiple stretch bending fixed block horizontally far from the punch-pin and in upper and lower To the first working condition far from the convex mould base, and horizontally close to the punch-pin and in above-below direction close to institute State the second working condition of convex mould base；

The multiple stretch bending fixed block and/or the convex mould base are driven, so that the stretch bending mechanism is turned by the first working condition Become the second working condition, to cooperate workpiece described in stretch bending with the punch-pin；Also, the cavity plate matched with the punch-pin with Make the workpiece shaping.

2. a kind of bending forming die as described in claim 1, which is characterized in that the cavity plate includes multiple cavity plate sliding blocks, The multiple cavity plate sliding block is slidably mounted on the die socket on direction close to each other, to enclose jointly when close to each other Form matrix cavity；

The bending forming die further includes cavity plate driving mechanism, to relatively close in the convex mould base and the die socket In stroke, the multiple cavity plate sliding block is driven to slide to direction close to each other.

3. a kind of bending forming die as claimed in claim 2, which is characterized in that the cavity plate driving mechanism includes that driving is oblique Face and driving auxiliary section, one of the driving inclined-plane and the driving auxiliary section are set on each cavity plate sliding block, another In the punch assemblies；The driving inclined-plane tilts on the direction towards the convex mould base towards the direction of the punch-pin Setting；In the convex mould base and the die socket in above-below direction stroke close to each other, the driving auxiliary section with it is described Driving inclined-plane matches, and it is sliding that the upper and lower close movement between the convex mould base and the die socket is changed into the multiple cavity plate The sliding action of block.

4. a kind of bending forming die as claimed in claim 3, which is characterized in that the driving auxiliary section is set on described each Idler wheel or sliding block on cavity plate sliding block；The driving inclined-plane be set on the convex mould base, and it is recessed to the convex mould base direction Arcwall face.

5. a kind of bending forming die as claimed in claim 2, which is characterized in that exist in the die socket and the convex mould base In up and down direction stroke close to each other, the multiple cavity plate sliding block correspondence is abutted with the multiple stretch bending fixed block, with linear The multiple stretch bending fixed block is driven to slide towards the direction close to the punch-pin.

6. bending forming die as claimed in claim 5, which is characterized in that the cavity plate sliding block is equipped with insert, the stretch bending Fixed block be equipped with the matched fixed block of insert shape, the insert and the fixed block the convex mould base with it is described recessed It is mutually clamped in the relatively close stroke of die holder, with workpiece described in sandwiched, and the cavity plate sliding block is made to be connected to the stretch bending Fixed block.

7. such as a kind of bending forming die of any of claims 1-6, which is characterized in that the die socket is driven Mobile towards the convex mould base, the stretch bending mechanism includes pedestal, and the multiple stretch bending fixed block can laterally slidably be set to institute It states on pedestal, the pedestal is set to up or down between the convex mould base and the die socket, in the die socket close to institute It states in the stroke of convex mould base, the pedestal is driven mobile towards the convex mould base.

8. bending forming die as claimed in claim 7, which is characterized in that the pedestal is by resilient supporting unit upper and lower Direction is resiliently supported installation, and the resilient supporting unit provides reset force for the pedestal, in the die socket far from described In the stroke of convex mould base, so that the pedestal is supported by the resilient supporting unit in above-below direction, it is directed away from the punch-pin The direction of seat is mobile to reset.

9. bending forming die as claimed in claim 8, which is characterized in that the stretch bending mechanism includes the fixed block reset of stretch bending Mechanism, the fixed module resetting mechanism of the stretch bending includes chain and the sprocket wheel set on the pedestal, and described chain one end is laterally prolonged At least one described stretch bending fixed block is stretched and connects, the other end vertically extends after being oriented to by the sprocket wheel and connects institute Punch assemblies are stated, in return stroke of the pedestal far from the convex mould base, at least one described stretch bending of the chain-driving Fixed block is horizontally far from the punch-pin side wall to reset.

10. bending forming die as claimed in claim 7, which is characterized in that the convex mould base and the pedestal pass through up and down The stripper bolt connection that direction extends；And/or

The guide post vertically extended is arranged on the convex mould base and the pedestal and is matched with the guide post Pilot hole；And/or

It is arranged with the guide legs vertically extended on the die socket and the convex mould base and matches with the guide legs That closes leads leg guide plate.