CN205878983U

CN205878983U - Auto radiator backplate

Info

Publication number: CN205878983U
Application number: CN201620859067.5U
Authority: CN
Inventors: 王震; 张兆芳; 张升强
Original assignee: SHANDONG HOUFENG AUTOMOBILE RADIATOR Co Ltd
Current assignee: SHANDONG HOUFENG AUTOMOBILE RADIATOR Co Ltd
Priority date: 2016-08-10
Filing date: 2016-08-10
Publication date: 2017-01-11
Anticipated expiration: 2026-08-10

Abstract

The utility model discloses an auto radiator backplate belongs to the radiator backplate, the utility model discloses how the technical problem who solves is for guaranteeing that the backplate and the synchronization inflation of cooling tube are unlikely to to produce too much internal stress to effectively improve auto radiator's life. Technical scheme does: this backplate includes this somatic part, turn -ups portion and the spill portion of bending, and the spill portion of bending sets up at the both ends of this somatic part, and the backplate of bending and describing for the U -shaped in the longitudinal section is formed with the spill portion of bending to this somatic part, turn -ups portion sets up and is provided with a plurality of opening in the both sides position of this somatic part and turn -ups portion, and the backplate that the cross section was bent and is described for the U -shaped is formed with turn -ups portion to this somatic part, the middle part position of this somatic part is provided with the expansion joint structure.

Description

A kind of automobile radiators backplate

Technical field

This utility model relates to radiator protecting plate, specifically a kind of automobile radiators backplate.

Background technology

Front aluminum matter automobile radiators is the most commonly used in all kinds of vehicles, and face shaping and installation size are different, is using During for the influence degree obvious difference of radiator expanded by heating of different volumes.Core body as radiator critical piece Ingredient radiating tube and backplate can influence each other in thermal expansion process, and be mainly manifested in that core is high and radiating tube and backplate long Change impact on degree direction.Owing to radiating tube and backplate material are thick and structural strength gap is obvious and the two uses at radiator During had institute by thermal change different, the difference of both thermal expansion effects can be caused, cause produce therebetween mutual Internal stress, thus cause the distance nearer radiating tube early fatigue crackle of backplate, make automobile radiators that the phenomenon of leakage to occur.

Summary of the invention

Technical assignment of the present utility model is for above not enough, it is provided that a kind of automobile radiators backplate, how solves Ensure that expand Tong Bu with radiating tube of backplate is unlikely to produce too much internal stress, thus be effectively improved automobile radiators The problem in service life.

This utility model solves its technical problem and be the technical scheme is that a kind of automobile radiators backplate, this backplate Including body, turn-up portion and spill bending part, spill bending part is arranged on the two ends of body, body and spill bending part Composition longitudinal section is the backplate of U-shaped bending-like；Turn-up portion is arranged on two side positions of body and turn-up portion is provided with some slitting Mouthful, body and the backplate that turn-up portion composition cross section is U-shaped bending-like；The medium position of body is provided with expansion nodule Structure.

As preferably, described expansion joint structure is made up of fracture and V-arrangement bending part, and fracture is arranged on the middle position of body Put, V-arrangement bending part in the both sides of fracture and and fracture between be provided with gap, V-arrangement bending part is turning over by body both sides The butterfly muscle structure that edge local bending is formed.

As preferably, described backplate uses the clad aluminium of 4343/3003/7072 material, and clad aluminium includes that outer layer welds The bed of material, middle level mother metal layer, internal layer touch water layer, and outer layer solder layer is 4343 aluminium alloy layers, and middle level mother metal layer is 3003 aluminium alloy layers, It is 7072 aluminium alloy layers that internal layer touches water layer.

As preferably, described backplate is by backplate punching shaving die and the backplate of molding mold for protecting plate machine-shaping.

More preferably, described backplate punching shaving die include upper bolster and die shoe, upper bolster and die shoe be arranged in parallel, And between upper bolster and die shoe, it being provided with guide pin bushing one and guide pin bushing two, between guide pin bushing one and guide pin bushing two, socket coordinates；Under upper bolster Side is provided with upper padding plate, is provided with cope match-plate pattern on the downside of upper padding plate, is provided with lower bolster, is provided with on the upside of lower bolster on the upside of die shoe Lower bolster, is provided with holding pad on the upside of lower bolster；Be disposed with between holding pad and upper padding plate crop punch, cutting punch, I-shaped punch and boss mould；Being provided with unloading bolt between upper bolster and holding pad, the side of unloading bolt is provided with rectangle Spring, Rectangular Spring is arranged between upper padding plate and holding pad and runs through cope match-plate pattern；Unloading bolt is fixing with holding pad to be connected, During punching press, unloading bolt moves back and forth with holding pad；Screw runs through die shoe, lower bolster and lower bolster, be used for connecting die shoe, Lower bolster and lower bolster；The side of crop punch is provided with straight pin, and straight pin runs through upper bolster, upper padding plate and cope match-plate pattern, circle Pin is used for connecting upper bolster, upper padding plate and cope match-plate pattern, plays positioning action during die assembly；The side of cutting punch is arranged There are alignment pin, alignment pin to be arranged on lower bolster, holding pad is correspondingly arranged on resigning hole, determining when material stamping-out Position.Wherein, crop punch, cutting punch, I-shaped punch and the equal insert of boss mould are fixed on cope match-plate pattern, and cope match-plate pattern top has Upper padding plate, is fastened with upper bolster by bolt, and holding pad is slidably matched with each stamping knife, is lifted on upper bolster by unloading bolt On.Lower bolster and lower bolster are fastenedly connected with die shoe by screw, and lower bolster has groove, facilitate blinking scrap to fall also Clean out.

More preferably, described molding mold for protecting plate includes upper bolster and die shoe, and upper bolster be arranged in parallel with die shoe, upper mold Being provided with guide pin bushing on Zuo, die shoe is provided with guide pillar, guide pillars and bushes socket coordinates；Upper padding plate it is provided with on the downside of upper bolster, It is provided with Rectangular Spring one on upper padding plate, on the upside of die shoe, is provided with lower bolster, lower bolster is provided with Rectangular Spring two, upper pad Wedge mechanism it is provided with between plate and lower bolster.

More preferably, described Wedge mechanism include punch, stripper, material returned block, die, block, compression spring, limited block, Locating piece, slide block and forward block, punch be arranged on upper padding plate lower section and with stripper matched in clearance, die is arranged on discharging The lower section of plate, material returned block is arranged in die, and block is embedded on die, and compression spring is fixedly installed on block side, spacing Block is fixed on die, and forward block plays spacing effect, and locating piece is fixed on die, slide block is played positioning action, Slide block is positioned by locating piece and compression spring, and slide block can move left and right backplate butterfly muscle molding, and forward block is fixed on On upper bolster, along with upper bolster moves up and down；The wedge shaped shape of forward block.

Compared to the prior art automobile radiators backplate of the present utility model, has the advantages that

1, being provided with expansion joint structure on backplate of the present utility model, during heat sink applications, backplate can be with temperature Change is arbitrarily shunk and extends, and basic guarantee is Tong Bu with the change of radiating tube, and backplate with radiating tube synchronization expansion is effectively ensured And be unlikely to produce too much internal stress, thus it is effectively improved the service life of automobile radiators；Protecting with expansion joint structure Plate is applied during radiator core body assembles, and is assembled into all kinds of automobile radiators to marketing, meets the market demand；

2, the expansion joint structure of this utility model backplate determines according to core body specification, different core body specification expansion joint structures Size also can difference, version is basically identical, determines the quantity of expansion joint structure according to the height of core body, it is ensured that expand While nodule structure eliminates thermal stress, reduce the quantity of expansion joint structure, cost-effective；

3, it is provided with gap at the turn-up portion of this utility model backplate, it is simple to fixed position placing clamp during core body welding, Ensure the concordance of core body welding；

4, backplate forming process of the present utility model uses rational processing technology, it is ensured that in obtaining eliminating The backplate of stress, this backplate passes through backplate punching shaving die and molding mold for protecting plate machine-shaping, it is ensured that manufacturability is strong, intensity High, relief of thermal stress impact, effectively solves the negative effect of thermal expansion, is applied in radiator by this backplate, it is possible to increase dissipate In the service life of hot device, increase the intensity of radiator, it is ensured that radiator can be applicable to all kinds of vehicle, and range is wide；

5, according to the different size of core body, determine the size of blanking in the backplate course of processing, and need not more mold exchange, Greatly reduce the development cost of product, shorten the production cycle of product, improve work efficiency；

6, model 4343/3003/7072 clad aluminium of backplate employing Ge Langjisi Aluminum company limited, the said firm's product Steady quality, with the addition of the alloy improving timber intensity in middle level masterbatch layer, i.e. 3003 aluminium alloy layers, and plate intensity increases； 4343 aluminium alloy layer fusing points are less than 3003 aluminium alloy layer fusing point about 10 DEG C, and welding temperature controls at 4343 aluminium alloy layers the most molten Change and mother metal 3003 aluminium alloy layer fusing point less than situation under, it is possible to realize the welding of 4343 aluminium alloy layers；7072 aluminium alloys Layer fusing point and 3003 aluminium alloy layers are identical, unchanged in welding process, have antisepsis, can extend 3003 aluminium alloy layers Corrosion resistance, and then extend backplate service life, reduce backplate change number of times, reduce cost.

Therefore this utility model has reasonable in design, simple in construction, is prone to the features such as processing, volume are little, easy to use, because of And, have good value for applications.

Accompanying drawing explanation

Below in conjunction with the accompanying drawings this utility model is further illustrated.

Accompanying drawing 1 is the structural representation of automobile radiators backplate；

Accompanying drawing 2 be in accompanying drawing 1 A to structural representation；

Accompanying drawing 3 is the close-up schematic view in accompanying drawing 2 at B；

Accompanying drawing 4 is the structural representation of backplate punching shaving die；

Accompanying drawing 5 is the structural representation of molding mold for protecting plate；

Accompanying drawing 6 is the structural representation of the blanking part that accompanying drawing 4 processes；

Accompanying drawing 7 is the structural representation of the profiled member that accompanying drawing 5 processes；

Accompanying drawing 8 is accompanying drawing 1 and the structural representation of corresponding radiator.

In figure: 1, body, 2, turn-up portion, 3, spill bending part, 4, gap, 5, fracture, 6, V-arrangement bending part；

In accompanying drawing 4: 4.1, upper bolster, 4.2 straight pins, 4.3, upper padding plate, 4.4, crop punch, 4.5, cope match-plate pattern, 4.6, Holding pad, 4.7, unloading bolt, 4.8, Rectangular Spring, 4.9, guide pin bushing one, 4.10, guide pin bushing two, 4.11, lower bolster, 4.12, spiral shell Nail, 4.13, lower bolster, 4.14, die shoe, 4.15, boss mould, 4.16, I-shaped punch, 4.17, cutting punch, 4.18, fixed Position pin；

In accompanying drawing 5: 5.1, upper bolster, 5.2, upper padding plate, 5.3, punch, 5.4, stripper, 5.5, material returned block, 5.6, recessed Mould, 5.7, material returned block alignment pin, 5.8, lower bolster, 5.9, die shoe, 5.10, Rectangular Spring one, 5.11, block, 5.12, cylinder Pin one, 5.13, compression spring, 5.14, guide pillar, 5.15, limited block, 5.16, straight pin two, 5.17, locating piece, 5.18, interior six Angle fillister head screw one, 5.19, slide block, 5.20, alignment pin, 5.21, forward block, 5.22, Rectangular Spring two, 5.23, guide pin bushing, 5.24, hexagon socket cap head screw two, 5.25, unloading bolt, 5.26, straight pin three；

In accompanying drawing 8: 8.1 core bodys, 8.2, backplate, 8.3, upper main leaf, 8.4, lower main leaf, 8.5, upper tank, 8.6, lower header.

Detailed description of the invention

The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings.

Embodiment 1:

As shown in accompanying drawing 1,2 and 3, automobile radiators backplate of the present utility model, its structure includes body 1, turn-up portion 2 With spill bending part 3, spill bending part 3 is arranged on the two ends of body 1, and body 1 and spill bending part 3 form longitudinal section and be The backplate of U-shaped bending-like；Turn-up portion 2 is arranged on two side positions of body 1 and turn-up portion 2 is provided with some gap 4, body Portion 1 and turn-up portion 2 form the backplate that cross section is U-shaped bending-like；The medium position of body 1 is provided with expansion joint structure.Swollen Swollen nodule structure is made up of fracture 5 and V-arrangement bending part 6, and fracture 5 is arranged on the medium position of body 1, and V-arrangement bending part 6 is positioned at disconnected The both sides of mouthfuls 5 and and fracture 5 between be provided with gap, V-arrangement bending part 6 be by the locally bending of the turn-up portion 2 of body 1 both sides The butterfly muscle structure formed.Backplate uses the clad aluminium of 4343/3003/7072 material, clad aluminium include outer layer solder layer, Middle level mother metal layer, internal layer touch water layer, and outer layer solder layer is 4343 aluminium alloy layers, and middle level mother metal layer is 3003 aluminium alloy layers, internal layer Tactile water layer is 7072 aluminium alloy layers.Backplate is by backplate punching shaving die and the backplate of molding mold for protecting plate machine-shaping.

As shown in Figure 4, backplate punching shaving die includes upper bolster 4.1 and die shoe 4.14, upper bolster 4.1 and lower mold Seat 4.14 be arranged in parallel and is provided with guide pin bushing 1 and guide pin bushing 2 4.10, guide pin bushing one between upper bolster 4.1 and die shoe 4.14 Between 4.9 and guide pin bushing 2 4.10, socket coordinates；It is provided with upper padding plate 4.3 on the downside of upper bolster 4.1, is provided with on the downside of upper padding plate 4.3 Cope match-plate pattern 4.5, is provided with lower bolster 4.13, is provided with lower bolster 4.11, lower mold on the upside of lower bolster 4.13 on the upside of die shoe 4.14 Holding pad 4.6 it is provided with on the upside of plate 4.11；Crop punch 4.4, cutting it is disposed with between holding pad 4.6 and upper padding plate 4.3 Punch 4.17, I-shaped punch 4.16 and boss mould 4.15；It is provided with unloading bolt between upper bolster 4.1 and holding pad 4.6 4.7, the side of unloading bolt 4.7 is provided with Rectangular Spring 4.8, and Rectangular Spring 4.8 is arranged on upper padding plate 4.3 and holding pad 4.6 Between and run through cope match-plate pattern 4.5；Unloading bolt 4.7 is fixing with holding pad 4.6 to be connected, and during punching press, unloading bolt 4.7 is with binder Plate 4.6 moves back and forth；Screw 4.12 runs through die shoe 4.14, lower bolster 4.13 and lower bolster 4.11, is used for connecting die shoe 4.14, lower bolster 4.13 and lower bolster 4.11；The side of crop punch 4.4 is provided with straight pin 4.2, and straight pin 4.2 runs through Die holder 4.1, upper padding plate 4.3 and cope match-plate pattern 4.5, straight pin 4.2 is used for connecting upper bolster 4.1, upper padding plate 4.3 and cope match-plate pattern 4.5, Play positioning action during die assembly；The side of cutting punch 4.17 is provided with alignment pin 4.18, and alignment pin 4.18 is arranged on On lower bolster 4.11, holding pad 4.6 is correspondingly arranged on resigning hole, the location when material stamping-out.

As shown in Figure 5, molding mold for protecting plate includes upper bolster 5.1 and die shoe 5.9, upper bolster 5.1 and die shoe 5.9 It is arranged in parallel, upper bolster 5.1 is provided with guide pin bushing 5.23, die shoe 5.9 is provided with guide pillar 5.14, guide pillar 5.14 and guide pin bushing 5.23 socket coordinates；It is provided with upper padding plate 5.2 on the downside of upper bolster 5.1, upper padding plate 5.2 is provided with Rectangular Spring 1, under It is provided with lower bolster 5.8 on the upside of die holder 5.9, lower bolster 5.8 is provided with Rectangular Spring 2 5.22, upper padding plate 5.2 and lower bolster Wedge mechanism it is provided with between 5.8.Wedge mechanism includes punch 5.3, stripper 5.4, material returned block 5.5, die 5.6, block 5.11, compression spring 5.13, limited block 5.15, locating piece 5.17, slide block 5.19 and forward block 5.21, punch 5.3 is arranged on The lower section of backing plate 5.2 and with stripper 5.4 matched in clearance, die 5.6 is arranged on the lower section of stripper 5.4, and material returned block 5.5 sets Putting in die 5.6, block 5.11 is embedded on die 5.6, and compression spring 5.13 is fixedly installed on block 5.11 side, spacing Block 5.15 is fixed on die 5.6, and forward block 5.21 plays spacing effect, and locating piece 5.17 is fixed on die 5.6, right Slide block 5.19 plays positioning action, and slide block 5.19 is positioned by locating piece 5.17 and compression spring 5.13, and slide block 5.19 can be left Having moved right backplate butterfly muscle molding, forward block 5.21 is fixed on upper bolster 5.1, along with upper bolster 5.1 moves up and down；Push away Enter the wedge shaped shape of block 5.21.It is provided with material returned block alignment pin 5.7 between lower bolster 5.8 and die 5.6, is used for realizing Rectangular Spring One 5.10 compressions and reset；Compression spring 5.13 is fixed on the one side of block 5.11 by straight pin 5.12；Limited block 5.15 are fixed on slide block 5.19 by straight pin 2 5.16, and locating piece 5.17 is fixed by hexagon socket cap head screw 1 On slide block 5.19；Being provided with some alignment pins 5.20 on punch 5.3, alignment pin 5.20 is for realizing determining of forward block 5.21 Position；Upper bolster 5.1 is connected by hexagon socket cap head screw 2 5.24 with upper padding plate 5.2, hexagon socket cap head screw 2 5.24 Side be additionally provided with unloading bolt 5.25, the medium position of upper bolster 5.1 is provided with straight pin 3 5.26.

As shown in Figure 8, backplate and corresponding heat spreader structures are as follows: this radiator include core body 8.1, main leaf, hydroecium and Backplate 8.2, core body 8.1 is radiating tube and the spaced assembly of heat-radiation belt, and main leaf is provided with main leaf hole, core body 8.1 Two ends are respectively arranged with main leaf 8.3, lower main leaf 8.4 up and down, and main leaf is inserted at the two ends up and down of the radiating tube of core body 8.1 respectively 8.3, in the main leaf hole of lower main leaf 8.4, the quantity in main leaf hole, position, shape size and the quantity of radiating tube of core body, position, Shape of cross section size is consistent, and upper main leaf 8.3 is provided above upper tank 8.5, is provided with lower header below lower main leaf 8.4 8.6, upper tank 8.5, radiating tube, lower header 8.6 form the cavity of an intercommunication sealed, upper tank 8.5 and lower header 8.6 Paddle hole is positioned on same side, is equipped with water inlet pipe and water outlet pipe at paddle hole；Core body 8.1, main leaf, that hydroecium is combined as one is whole Body, the left and right sides is gone along with sb. to guard him by left and right two backplates 8.2 and is fixed as one.

With the backplate 8.2 of expansion joint structure, for different core body specifications, expansion joint structure size can be variant, but knot Configuration formula is basically identical, and can arrange the expansion joint structure of varying number according to different core body height, if core body height is at 600mm One expansion joint structure below can be set, 2-3 can be arranged more than 600mm according to the difference of core high size and expand nodule Structure.

As shown in accompanying drawing 1,4 and 6, the specific works process of automobile radiators backplate punching trimming of the present utility model: will The clad aluminium of blanking is by uncoiler self-feeding to backplate punching shaving die, and one time stamping-out matched moulds punching and blanking obtains Blanking part, the crop punch 4.4 on backplate punching shaving die processes spill bending part 3, and boss mould 4.15 processes location Circular hole, positioning round orifice is for the location of follow-up backplate processing, and cutting punch 4.17 processes gap 4, and I-shaped punch 4.16 adds Work goes out I-shaped hole, and I-shaped hole is for processing follow-up backplate expansion joint structure；The concrete punching course of punching trimming is as follows: Holding pad 4.6 first contacts blanking part, compresses and fix blanking part by compression Rectangular Spring 4.8, crop punch 4.4, cut convex Mould 4.17, I-shaped punch 4.16 and boss mould 4.15 stamping-out, blinking scrap is fallen on die shoe 4.14 and cleans out in time；Punching Sanction completes, and upper bolster 4.1 is gradually increasing, the blanking part that stamping-out is completed under Rectangular Spring 4.8 resilience force effect by holding pad 4.6 Unload from crop punch 4.4, cutting punch 4.17, I-shaped punch 4.16 and boss mould 4.15, make blanking part stay lower mold On plate 4.11.

As shown in accompanying drawing 1,5 and 7, the specific works process of automobile radiators backplate molding of the present utility model: blanking part When being placed on molding mold for protecting plate, face down the one of outer layer solder layer, backplate forming process has bending at three, i.e. two ends Spill bending part 3, the turn-up portion 2 on both sides and the V-arrangement bending part 6 of expansion joint structure；Wherein, V-arrangement bending part 6 molding uses Wedge mechanism in molding mold for protecting plate, Wedge mechanism is by the I-shaped hole machined forming V-shape bending part 6 in step (2)；At two ends Spill bending part 3 and both sides turn-up portion 2 upright while Wedge mechanism bring into operation, the compression spring in molding mold for protecting plate 5.13 are gradually compressed, and after molding mold for protecting plate is of completely closed, V-arrangement bending part 6 molding puts in place；Molding mold for protecting plate opening process In, compression spring 5.13 gradually resilience, slide block 5.19 playbacks；Profiled member is released die cavity by material returned block 5.5, and backplate molding is complete. In the expansion joint structure forming process of backplate, the specific works process of Wedge mechanism is as follows: forward block 5.21 is along with upper bolster 5.1 Together moving down, forward block 5.21 contacts with slide block 5.19 and promotes slide block 5.19 to move to centre position, slide block simultaneously 5.19 compression compression springs 5.13, make compression spring 5.13 be in compressive state, reach to expand nodule when punch 5.3 moves down Structure shaping position, slide block 5.19 is simultaneously in expansion joint structure shaping position, and slide block 5.19 has moved left and right backplate expansion joint The butterfly muscle molding of structure；In molding mold for protecting plate opening process, forward block 5.21 together moves up along with upper padding plate 5.2, Forward block 5.21 separates with slide block 5.19, and slide block 5.19 moves out under the thrust of compression spring 5.13, returns to initial position.

By detailed description of the invention above, described those skilled in the art can readily realize this utility model.But It is to should be appreciated that this utility model is not limited to above-mentioned detailed description of the invention.On the basis of disclosed embodiment, described Those skilled in the art can the different technical characteristic of combination in any, thus realize different technical schemes.

In addition to the technical characteristic described in description, it is the known technology of those skilled in the art.

Claims

1. an automobile radiators backplate, it is characterised in that: this backplate includes body, turn-up portion and spill bending part, spill Bending part is arranged on the two ends of body, body and the backplate that spill bending part composition longitudinal section is U-shaped bending-like；Turn-up portion Two side positions and the turn-up portion that are arranged on body are provided with some gap, and body is U-shaped folding with turn-up portion composition cross section The backplate of curved shape；The medium position of body is provided with expansion joint structure.

Automobile radiators backplate the most according to claim 1, it is characterised in that: described expansion joint structure is by fracture and V-arrangement Bending part form, fracture is arranged on the medium position of body, V-arrangement bending part in the both sides of fracture and and fracture between set Being equipped with gap, V-arrangement bending part is the butterfly muscle structure formed by the turn-up portion local bending of body both sides.

Automobile radiators backplate the most according to claim 1 and 2, it is characterised in that: described backplate uses 4343/3003/ The clad aluminium of 7072 materials, clad aluminium includes that outer layer solder layer, middle level mother metal layer, internal layer touch water layer, and outer layer solder layer is 4343 aluminium alloy layers, middle level mother metal layer is 3003 aluminium alloy layers, and it is 7072 aluminium alloy layers that internal layer touches water layer.

Automobile radiators backplate the most according to claim 1, it is characterised in that: described backplate is by backplate punching trimming Mould and the backplate of molding mold for protecting plate machine-shaping.

Automobile radiators backplate the most according to claim 4, it is characterised in that: described backplate punching shaving die includes Die holder and die shoe, upper bolster and die shoe be arranged in parallel and are provided with guide pin bushing one and guide pin bushing two between upper bolster and die shoe, Between guide pin bushing one and guide pin bushing two, socket coordinates；It is provided with upper padding plate on the downside of upper bolster, on the downside of upper padding plate, is provided with cope match-plate pattern, lower mold It is provided with lower bolster on the upside of Zuo, on the upside of lower bolster, is provided with lower bolster, on the upside of lower bolster, be provided with holding pad；Holding pad and upper pad Crop punch, cutting punch, I-shaped punch and boss mould it is disposed with between plate；It is provided with between upper bolster and holding pad Unloading bolt, the side of unloading bolt is provided with Rectangular Spring, and Rectangular Spring is arranged between upper padding plate and holding pad and runs through Cope match-plate pattern；Unloading bolt is fixing with holding pad to be connected；Screw runs through die shoe, lower bolster and lower bolster；The side of crop punch Being provided with straight pin, straight pin runs through upper bolster, upper padding plate and cope match-plate pattern；The side of cutting punch is provided with alignment pin, location Pin is arranged on lower bolster.

Automobile radiators backplate the most according to claim 4, it is characterised in that: described molding mold for protecting plate includes upper bolster And die shoe, upper bolster be arranged in parallel with die shoe, and upper bolster is provided with guide pin bushing, and die shoe is provided with guide pillar, guide pillar and Guide pin bushing socket coordinates；It is provided with upper padding plate on the downside of upper bolster, upper padding plate is provided with Rectangular Spring one, is provided with on the upside of die shoe Lower bolster, lower bolster is provided with Rectangular Spring two, is provided with Wedge mechanism between upper padding plate and lower bolster.

Automobile radiators backplate the most according to claim 6, it is characterised in that: described Wedge mechanism includes punch, discharging Plate, material returned block, die, block, compression spring, limited block, locating piece, slide block and forward block, punch is arranged under upper padding plate Side and with stripper matched in clearance, die is arranged on the lower section of stripper, and material returned block is arranged in die, and block is embedded in recessed On mould, compression spring is fixedly installed on block side, and limited block is fixed on die, and locating piece is fixed on die, and slide block leads to Crossing locating piece and compression spring location, forward block is fixed on upper bolster；The wedge shaped shape of forward block.