CN121017384B

CN121017384B - A radiator fin stamping die and its stamping equipment

Info

Publication number: CN121017384B
Application number: CN202511395008.7A
Authority: CN
Inventors: 席杰; 胡怀东; 杨霄; 代自勇; 杨劲草; 郭艳丽
Original assignee: Hubei Yinlun Machinery Co ltd
Current assignee: Hubei Yinlun Machinery Co ltd
Priority date: 2025-09-28
Filing date: 2025-09-28
Publication date: 2026-04-17
Anticipated expiration: 2045-09-28
Also published as: CN121017384A

Abstract

The invention provides a radiator fin stamping die and stamping forming equipment thereof. The lower side of the upper die is movably connected with an upper pressing plate frame, an upper supporting spring is connected between the two; the upper side of the lower die is movably connected with a lower pressing plate frame, a lower supporting spring is connected between the two. The upper end of the lower die is provided with a lower shearing strip penetrating through the lower pressing plate frame, the upper pressing plate frame is provided with an upper limiting groove matched with the lower shearing strip, the upper shearing strip and the lower shearing strip are connected end to end in a horizontal plane, and the upper pressing plate frame is provided with an upper limiting groove matched with the lower shearing strip. The lower end of the upper die is provided with upper stamping extending strips at equal intervals on one side of the upper shearing strip, the lower pressing plate frame is provided with corresponding lower supporting grooves, the upper end of the lower die is provided with lower stamping extending strips at equal intervals on one side of the lower shearing strip, and the upper pressing plate frame is provided with corresponding upper supporting grooves. The lower end of the upper pressing plate frame is provided with a pressing strip at the position of the upper punching extension strip far away from the upper shearing strip. The invention realizes the rapid integrated forming processing of the thinner fins by using the stamping process, and greatly improves the production efficiency.

Description

Radiator fin stamping die and stamping forming equipment thereof

Technical Field

The invention belongs to the technical field of machining, and relates to a radiator fin stamping die and stamping forming equipment thereof.

Background

The heat dissipation fin is used as a key structure in a heat management device, is widely applied to the fields of electronic devices, power modules, new energy equipment and the like, and has the main functions of enhancing convection and radiation heat exchange by increasing the heat dissipation surface area, so that the working temperature of a core element is effectively reduced. In order to improve the heat dissipation efficiency, modern heat sinks generally seek integrated fin structures with high density, ultra-thin and high heat conductivity.

At present, the processing modes of the radiating fin mainly comprise stamping forming, extrusion forming, inserting sheet assembling, planing forming and the like. The stamping forming is used for manufacturing the metal fins with the thickness of more than 0.2 mm due to mature process, low cost and high production efficiency, and is suitable for mass heat dissipation components with relatively simple structures. However, due to the mold strength and material rebound, the conventional stamping is difficult to realize a precise structure with the fin thickness lower than 0.15 mm or the high thickness-diameter ratio, so that the application of the fin in a high-performance heat dissipation scene is restricted.

To break through the above limitations, two high density fin manufacturing techniques, namely insert and shave, have been developed. The inserting sheet type process prepares ultrathin fins (which can be as thin as 0.1 mm) by stamping or etching, and then inserts the ultrathin fins into a base plate with a groove and fixes the ultrathin fins by means of tube expansion, welding or brazing. Although the method can realize extremely thin wall thickness, obvious interface contact thermal resistance exists between the fins and the substrate, the overall heat conduction performance is obviously weakened, the subsequent assembly process is complex, and the consistency is difficult to ensure. On the other hand, the planing forming technology directly and continuously planes the integrated ultrathin fins from the solid metal blank (such as copper or aluminum) through a special cutter, so that a high-density structure with the fin thickness as low as 0.1 mm and the space less than 1 mm can be realized, the fins and the substrate have no interface, and the heat conduction path is continuous. However, the process has extremely high requirements on equipment precision, large equipment investment, low processing efficiency and low material utilization rate (a large amount of metal is removed by cutting), and is difficult to meet the requirements of low cost and large-scale production.

Disclosure of Invention

The invention aims to provide a radiator fin stamping die and stamping forming equipment thereof, which realize rapid integrated forming processing of thinner fins by adopting a stamping process, have high processing efficiency and can meet the requirements of low cost and mass production.

In order to solve the technical problems, the invention provides a radiator fin stamping die, which comprises an upper die and a lower die which are oppositely arranged, wherein an upper pressing plate frame is movably connected to the lower side of the upper die, an upper supporting spring is connected between the upper die and the upper pressing plate frame, a lower pressing plate frame is movably connected to the upper side of the lower die, and a lower supporting spring is connected between the lower die and the lower pressing plate frame;

An upper shearing strip capable of penetrating through the upper pressing plate frame is arranged downwards on one side of the lower end of the upper die, a lower limiting groove matched with the upper shearing strip is arranged downwards on the lower pressing plate frame, a lower shearing strip capable of penetrating through the lower pressing plate frame is arranged upwards on one side of the upper end of the lower die, the upper shearing strip and the lower shearing strip are connected end to end in a horizontal plane, and an upper limiting groove matched with the lower shearing strip is arranged upwards on the upper pressing plate frame;

A plurality of upper stamping extending strips are arranged at the lower end of the upper die at equal intervals downwards on one side of the upper shearing strip, a plurality of lower supporting grooves which are in one-to-one correspondence with the upper stamping extending strips are arranged downwards on the lower pressing plate frame, a plurality of lower stamping extending strips are arranged at equal intervals upwards on one side of the lower shearing strip at the upper end of the lower die, and a plurality of upper supporting grooves which are in one-to-one correspondence with the lower stamping extending strips are arranged upwards on the upper pressing plate frame;

The lower end of the upper pressing plate frame is provided with a pressing strip downwards at the position, far away from the upper shearing strip, of the upper punching extension strip.

By adopting the technical scheme, in the die assembly stage, in the descending process of the upper die, the upper pressing plate frame and the lower pressing plate frame are in contact with the plate in advance under the action of the supporting spring and form clamping fixation, and the plate is ensured to have no transverse displacement in the stamping process through the guiding action of the upper sliding shaft and the lower sliding shaft.

In the shearing forming stage, the upper shearing strip is matched with the lower limiting groove, the lower shearing strip is matched with the upper limiting groove, the stamping grooves connected end to end are formed on the plates in an up-down opposite shearing mode, the plates are synchronously stamped into vertical downward fins and vertical upward connecting pieces respectively, and integral forming of the fins and the connecting pieces is achieved.

And in the stage of extending and rolling, the upper stamping extending strip moves downwards, the fins are gradually stamped and extended along with the upper stamping extending strip in the closing process of the die after entering the lower supporting groove, the lower stamping extending strip moves upwards synchronously, and the connecting sheet is symmetrically stamped and extended by the lower stamping extending strip after entering the upper supporting groove. The fins and the connecting sheets gradually reach the design height in a plurality of stamping cycles by matching the stamping extension strips with the supporting grooves in a plurality of groups of gradually-changed intervals, and finally, the precise forming of the radiating fins is completed.

In the forming stage of the radiator, the connecting sheet can be further pressed downwards by the pressing strip in the next round of downward pressing process of the pressing strip, so that the connecting sheet is covered.

The invention is further characterized in that a plurality of upper sliding holes are formed through the edge of the upper die, a plurality of upper sliding shafts which are in one-to-one correspondence with the upper sliding holes are upwards arranged at the edge of the upper pressing plate frame, an upper limit cap is arranged at the upper end of each upper sliding shaft, which extends out of the corresponding upper sliding hole, and an upper supporting spring positioned between the upper die and the upper pressing plate frame is sleeved outside each upper sliding shaft.

The invention is further characterized in that a plurality of lower sliding holes are formed through the edge of the lower die, a plurality of lower sliding shafts which are in one-to-one correspondence with the lower sliding holes are downwards arranged at the edge of the lower pressing plate frame, lower limit caps are arranged at the lower ends of the lower sliding shafts, which extend out of the corresponding lower sliding holes, and lower supporting springs positioned between the lower die and the lower pressing plate frame are sleeved outside the lower sliding shafts.

The invention is further arranged that the distance between the upper punching extending strip and the inner wall of the lower supporting groove, which is close to the upper shearing strip, is gradually reduced in the direction away from the upper shearing strip, and the distance between the lower punching extending strip and the inner wall of the upper supporting groove, which is close to the lower shearing strip, is gradually reduced in the direction away from the lower shearing strip.

The invention is further arranged that the lower end of one side of each upper punching extending strip, which is close to the upper shearing strip, is rotationally connected with an upper rolling shaft which is arranged along the width direction of the upper punching extending strip, and the upper end of one side of each lower punching extending strip, which is close to the lower shearing strip, is rotationally connected with a lower rolling shaft which is arranged along the width direction of the lower punching extending strip.

The invention is further characterized in that a bending strip is downwards arranged at the lower end of the upper pressing plate frame between one upper punching extending strip farthest from the upper shearing strip and the pressing strip, the lower end of the bending strip is a bevel which is downwards inclined towards the direction away from the pressing strip, and the distance between the bending strip and one upper punching extending strip farthest from the upper shearing strip and the distance between the bending strip and the pressing strip are equal to the distance between two adjacent upper punching extending strips.

The invention also discloses radiator fin stamping forming equipment, which comprises a frame, wherein two opposite horizontal support bars are horizontally arranged in the middle of the frame, a stamping platform which is connected with one end of each of the two horizontal support bars and has the same height is horizontally arranged at the inlet of the frame, a plurality of belt conveyors which are distributed along the length direction of each horizontal support bar are arranged above each frame, each belt conveyor comprises a conveying belt which is arranged along the length direction of each horizontal support bar, two driving shafts which are respectively arranged at two ends in the conveying belt and are rotationally connected with the edges of the frame, and a conveying motor which is arranged outside the frame and is used for driving the driving shafts to rotate;

The upper die and the lower die are respectively positioned at the upper side and the lower side of the middle parts of the two horizontal support bars, a plurality of first hydraulic telescopic cylinders are arranged at the top of the frame downwards in the upper direction of the middle parts of the two horizontal support bars, the telescopic shaft of each first hydraulic telescopic cylinder is downwards connected with the upper end of the upper die, a plurality of first upper transmission racks are downwards arranged at the two sides of the upper die, which are vertical to the horizontal support bars, the two sides of the lower die, which are vertical to the horizontal support bars, are upwards provided with a plurality of first lower transmission racks which are in one-to-one correspondence with the first upper transmission racks, and a first transmission gear meshed with the first upper transmission racks and the first lower transmission racks is rotatably connected between each two opposite first transmission racks at the outer side of each horizontal support bar;

The top of frame in the horizontal support bar is kept away from one side of punching press platform installs many second hydraulic telescoping cylinders downwards, the lower extreme cooperation of the telescopic shaft of many second hydraulic telescoping cylinders is connected with the punching press shearing plate that the level set up, in the frame in the below of going up punching press shearing plate is provided with the lower punching press shearing plate that cooperatees with it, go up punching press shearing plate and be provided with down the shearing sword downwards, down punching press shearing plate upwards be provided with go up shearing sword matched with lower support bar, go up punching press shearing plate perpendicularly the both sides of horizontal support bar all are provided with the second downwards and go up the transmission rack, down punching press shearing plate perpendicularly the both sides of horizontal support bar all upwards be provided with the second of transmission rack one-to-one down, the outside of every horizontal support bar all rotate between every two relative second upper transmission racks and second lower transmission rack and be connected with the second transmission gear that meshes with both.

By adopting the technical scheme, the working principle of the radiator fin stamping forming equipment mainly comprises the key stages of plate conveying, die closing, fin stamping forming and cutting blanking.

In the plate conveying stage, the plate is placed on a stamping platform and is pushed forward to a belt conveyor on a horizontal supporting bar, the belt conveyor above the horizontal supporting bar is driven by a conveying motor, the lower side of the conveying belt is contacted with the upper surface of the plate, a bidirectional conveying resultant force is formed, and the plate is stably conveyed to a stamping station.

And in the mold closing stage, the two first hydraulic telescopic cylinders synchronously extend downwards to push the upper mold to vertically press downwards. The first upper transmission racks on the two sides of the upper die and the first lower transmission racks on the two sides of the lower die are meshed and transmitted through the first transmission gears, so that the linear motion of the hydraulic cylinder is converted into symmetrical opposite motion of the upper die and the lower die. The first vertical sliding groove guides and constrains the transmission rack, so that the upper die and the lower die are kept parallel in the die assembly process, and the die damage or fin forming defect caused by unbalanced load is avoided. When the upper pressing plate frame and the lower pressing plate frame are in contact with the plates, the upper supporting springs and the lower supporting springs are compressed to form flexible clamping of the plates, and the plates are prevented from being displaced in the stamping process.

The fin stamping forming stage is divided into two steps of shearing forming and extending rolling. During shearing forming, the upper shearing strip is matched with the lower limiting groove, the lower shearing strip is matched with the upper limiting groove, and the stamping grooves connected end to end are formed on the plate through upward and downward opposite shearing, so that the plate is synchronously stamped into a fin vertically downward and a connecting sheet vertically upward. And in the extending rolling stage, the upper stamping extending strip drives the upper rolling shaft to move downwards, the upper rolling shaft carries out progressive rolling extension on the fins after the fins enter the lower supporting groove, the lower stamping extending strip synchronously drives the lower rolling shaft to move upwards, and the lower rolling shaft carries out symmetrical rolling extension on the connecting sheet after the connecting sheet enters the upper supporting groove. The stamping extension strips with gradually changed intervals are matched with the supporting grooves, so that the fins and the connecting sheets gradually reach the designed height in a plurality of stamping cycles. And then the bending strip is downwards punched to bend the connecting sheet towards the direction of the punching groove, and the pressing strip is downwards pressed again to press the connecting sheet into the punching groove and cover the connecting sheet, so that the precise forming of the radiating fin is completed.

And in the cutting and blanking stage, the two second hydraulic telescopic cylinders synchronously extend downwards to push the upper punching shear plate to vertically press downwards. The second upper transmission racks on two sides of the upper punching shear plate and the second lower transmission racks on two sides of the lower punching shear plate are in meshed transmission through the second transmission gears, so that the upper shear plate and the lower shear plate are ensured to move in parallel. The upper shearing edge is matched with the lower supporting bar, and shearing force is formed at the position of the connecting sheet, so that the formed radiator fin assembly is cut and separated from the plate. The second vertical chute guides the transmission rack, so that cutting accuracy is guaranteed. And transferring the cut radiator fin component to a finished product area through a subsequent conveying device to complete the whole stamping forming process.

The invention is further characterized in that the frame is rotatably connected with a plurality of conveying shafts which are transversely arranged above the stamping platform, a driving motor is arranged outside the frame, a power output shaft of the driving motor is connected with one of the conveying shafts, one end of each conveying shaft extends out of the frame and is provided with a transmission belt wheel, all the transmission belt wheels are in transmission connection with each other through belts, rolling gears are arranged at two ends of each conveying shaft on the stamping platform, each rolling gear corresponds to the position of a corresponding conveying belt on one side, and the tooth height of the outer Zhou Gunchi of each rolling gear is gradually increased towards the direction of the horizontal supporting bar.

The invention is further arranged that the periphery of each conveying belt is provided with a conveying rack matched with the hobbing of the periphery of the rolling gear.

The invention is further arranged that a first vertical chute is arranged at the top of the frame at each first transmission gear, each first vertical chute is in sliding connection with a corresponding first upper transmission rack and a corresponding first lower transmission rack, a second vertical chute is arranged at the top of the frame at each second transmission gear, and each second vertical chute is in sliding connection with a corresponding second upper transmission rack and a corresponding second lower transmission rack.

Compared with the prior art, the invention has the following beneficial effects:

Firstly, the invention realizes the efficient and precise stamping forming of the radiator fin through a unique die design. The upper die and the lower die of the die are oppositely arranged, and the structure of the upper pressing plate frame, the lower pressing plate frame and the supporting spring is matched, so that stable clamping of the plate in the stamping process is ensured, displacement of the plate is effectively prevented, and the stamping precision and the fin quality are improved. Meanwhile, the upper shearing strip, the lower shearing strip, the upper punching extension strip, the lower punching extension strip and other structures are skillfully matched, so that the fins and the connecting sheet can be integrally formed, and finally, the rapid integral forming processing of thinner fins is realized, and the production efficiency is greatly improved.

Secondly, the stamping forming equipment adopts an advanced transmission mechanism and a hydraulic system, so that the precise die assembly of the die and the precise stamping of the fins are realized. Through the synchronous control of the first hydraulic telescopic cylinder and the second hydraulic telescopic cylinder and the meshing transmission of the transmission rack and the transmission gear, the symmetrical opposite movement of the upper die and the lower die is ensured, and the stamping process is more stable and reliable. In addition, the design of structures such as a belt conveyor, a conveying shaft, a rolling gear and the like in the equipment further improves the stability of conveying the plates and the precision of stamping forming.

Drawings

FIG. 1 is a schematic overall structure of a first embodiment of the present invention;

FIG. 2 is a schematic view of the overall structure of the upper die;

FIG. 3 is a schematic view of the overall structure of the upper platen frame;

FIG. 4 is a schematic view of the overall structure of the lower die;

FIG. 5 is a schematic view of the overall structure of the hold-down plate holder;

FIG. 6 is a schematic overall structure of a second embodiment of the present invention;

FIG. 7 is a view mainly showing a belt conveyor on a horizontal support bar and a rolling gear on a punching platform;

Fig. 8 is used to show the correspondence of the upper punch shear plate and the lower punch shear plate.

Wherein, 1, upper mould; 2, lower die, 3, upper press frame, 4, upper slide hole, 5, upper slide shaft, 6, upper limit cap, 7, upper support spring, 8, lower press frame, 9, lower slide hole, 10, lower slide shaft, 11, lower limit cap, 12, lower support spring, 13, upper shear bar, 14, lower limit groove, 15, lower shear bar, 16, upper limit groove, 17, upper punching extension bar, 18, lower support groove, 19, upper roll shaft, 20, lower punching extension bar, 21, upper support groove, 22, lower roll shaft, 23, press bar, 24, bending bar, 25, frame, 26, horizontal support bar, 27, punching platform, 28, conveying belt, 29, driving shaft, 30, conveying motor, 31, conveying shaft, 32, driving motor, 33, roll gear, 34, first hydraulic telescopic cylinder, 35, first upper transmission rack, 36, first lower transmission gear, 37, first transmission gear, 38, first vertical chute, 39, second hydraulic telescopic cylinder, 40, upper shear plate, lower shear plate, 24, bending bar, 25, frame, 26, horizontal support bar, 27, punching platform, 28, conveying belt, 29, driving shaft, 30, conveying motor, 31, conveying shaft, 32, driving motor, 33, rolling gear, 34, first hydraulic telescopic cylinder, 35, first hydraulic telescopic cylinder, 36, first lower transmission rack, 37, first transmission gear, first and second transmission gear, 48, second belt, 45, and second transmission belt.

Detailed Description

The invention provides a radiator fin stamping die and stamping forming equipment thereof, which are further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are in a very simplified form and are all to a non-precise scale, merely for convenience and clarity in aiding in the description of embodiments of the invention. The same or similar reference numbers in the drawings refer to the same or similar parts.

Embodiment 1 referring to fig. 1 to 5, a radiator fin press mold is described, which includes an upper die 1 and a lower die 2 disposed opposite to each other. The lower side of the upper die 1 is movably connected with a hollowed upper pressing plate frame 3, a plurality of upper sliding holes 4 are formed in the edge of the upper die 1, and a plurality of upper sliding shafts 5 which correspond to the upper sliding holes 4 one by one are arranged upwards in the edge of the upper pressing plate frame 3. The upper end of each upper sliding shaft 5 extends out of the corresponding upper sliding hole 4 and is provided with an upper limit cap 6, and each upper sliding shaft 5 is sleeved with an upper supporting spring 7 positioned between the upper die 1 and the upper pressing plate frame 3, so that the upper pressing plate frame 3 is contacted with a plate during punching.

The upper side of the lower die 2 is movably connected with a hollowed lower pressing plate frame 8, a plurality of lower sliding holes 9 are formed in the edge of the lower die 2, and a plurality of lower sliding shafts 10 which are in one-to-one correspondence with the lower sliding holes 9 are arranged downwards at the edge of the lower pressing plate frame 8. The lower end of each lower sliding shaft 10 extends out of the corresponding lower sliding hole 9 and is provided with a lower limiting cap 11, and each lower sliding shaft 10 is sleeved with a lower supporting spring 12 positioned between the lower die 2 and the lower pressing plate frame 8, so that the lower pressing plate frame 8 is contacted with a plate during punching, and the upper pressing plate frame 3 and the lower pressing plate frame 8 are matched to clamp the plate.

One side of the lower end of the upper die 1 is downwards provided with an upper shearing bar 13 which can pass through the upper pressing plate frame 3, and the lower pressing plate frame 8 is downwards provided with a lower limit groove 14 matched with the upper shearing bar 13. The upper shearing strips 13 are matched with the lower limiting grooves 14, and the plates can be punched into fins which are bent downwards to be vertically downwards. One side of the upper end of the lower die 2 is upwards provided with a lower shearing strip 15 which can pass through the lower pressing plate frame 8, and the upper shearing strip 13 and the lower shearing strip 15 are connected end to end in a horizontal plane. The upper pressing plate frame 3 is upwards provided with an upper limit groove 16 matched with the lower shear bar 15, and the upper shear bar 13 is matched with the upper limit groove 16 to punch the plate into a connecting sheet which is upwards bent to be vertically upwards. The upper shearing strip 13 and the lower shearing strip 15 shear up and down to bend the fin and the connecting sheet up and down respectively, and a punching groove is formed on the plate.

Four upper stamping extension strips 17 are downwards arranged at equal intervals on one side of the upper shearing strip 13 at the lower end of the upper die 1, and four lower supporting grooves 18 which are in one-to-one correspondence with the upper stamping extension strips 17 are downwards arranged on the lower pressing plate frame 8. The distance between the upper punch extension bar 17 and the inner wall of the lower support groove 18 near the upper shear bar 13 becomes gradually smaller in the direction away from the upper shear bar 13. The lower end of each upper punch extension 17 near the side of the upper shear 13 is rotatably connected to an upper roll shaft 19 provided along the width direction thereof. When the upper stamping extension bar 17 is stamped downwards, the fins extend into the lower supporting groove 18 to be supported by the lower supporting groove, the upper rolling shaft 19 rolls and extends the fins downwards to be longer, and the height of the fins is achieved through multiple times of rolling.

Four lower stamping extension bars 20 are arranged at equal intervals upwards at one side of the lower shearing bar 15 at the upper end of the lower die 2, and four upper supporting grooves 21 which are in one-to-one correspondence with the lower stamping extension bars 20 are arranged upwards on the upper pressing plate frame 3. The distance between the lower punch extension bar 20 and the inner wall of the upper support groove 21 near the lower shear bar 15 becomes gradually smaller in the direction away from the lower shear bar 15. The upper end of the side of each lower punch extension bar 20 near the lower shear bar 15 is rotatably connected to a lower roll shaft 22 provided along the width direction thereof. When the lower stamping extension bar 20 is stamped upwards, the connecting piece stretches into the upper supporting groove 21 to be supported by the upper supporting groove, the connecting piece is rolled upwards and extended to be longer by the lower rolling shaft 22, and the height of the connecting piece is equal to the width of the stamping groove through multiple times of rolling.

The lower extreme of top board frame 3 sets up a pressfitting strip 23 downwards in the upper punching press extension strip 17 department of keeping away from last shearing strip 13, and the lower extreme of top board frame 3 sets up a bending strip 24 downwards between a last punching press extension strip 17 of keeping away from last shearing strip 13 and pressfitting strip 23, and bending strip 24 lower extreme is the bevel connection to keeping away from pressfitting strip 23 direction downward sloping. The spacing between the bending strip 24 and one of the upper punch extensions 17 furthest from the upper shear strip 13 and the spacing between the bending strip 24 and the press-fit strip 23 are equal to the spacing between two adjacent upper punch extensions 17. When the bending strip 24 is punched downwards, the connecting sheet can be bent towards the direction of the corresponding punching groove, and when the next pressing strip 23 is punched downwards, the pressing strip 23 can press the connecting sheet downwards into the punching groove to cover the connecting sheet.

The working principle of the radiating fin stamping die is that in the die assembly stage, in the descending process of the upper die 1, the upper pressing plate frame 3 and the lower pressing plate frame 8 are in contact with the plate material in advance under the action of the supporting springs and form clamping fixation, and the plate material is ensured to have no transverse displacement in the stamping process through the guiding action of the upper sliding shaft 5 and the lower sliding shaft 10.

In the shearing forming stage, the upper shearing strip 13 is matched with the lower limiting groove 14, the lower shearing strip 15 is matched with the upper limiting groove 16, and the stamping grooves connected end to end are formed on the plates by shearing vertically and oppositely, so that the plates are synchronously stamped into vertical downward fins and vertical upward connecting pieces respectively, and the integrated forming of the fins and the connecting pieces is realized.

In the extending rolling stage, the upper stamping extending strip 17 drives the upper rolling shaft 19 to move downwards, after the fins enter the lower supporting groove 18, the upper rolling shaft 19 performs progressive rolling expansion on the fins in the closing process of the die, the lower stamping extending strip 20 synchronously drives the lower rolling shaft 22 to move upwards, and after the connecting sheet enters the upper supporting groove 21, the lower rolling shaft 22 performs symmetrical rolling expansion on the connecting sheet. The fins and the connecting sheets gradually reach the design height in a plurality of stamping cycles by matching the stamping extension strips with the supporting grooves in a plurality of groups of gradually-changed intervals, and finally, the precise forming of the radiating fins is completed.

In the forming stage of the radiator, when the bending strip 24 is punched downwards, the connecting sheet can be bent towards the corresponding punching groove direction. Subsequently, during the next round of pressing down of the press bar 23, the press bar 23 can press the connecting piece further down into the pressing groove, thereby realizing the covering thereof.

Embodiment 2, referring to fig. 6-8, a radiator fin press molding apparatus is described. The equipment comprises a frame 25, wherein two opposite horizontal support bars 26 are horizontally arranged in the middle of the frame 25, and a stamping platform 27 which is connected with one end of each of the two horizontal support bars 26 and has the same height is horizontally arranged at the inlet of the frame 25. The frame 25 is provided with two belt conveyors 49 distributed along its length above each horizontal support bar 26. Each belt 49 conveyor comprises a conveyor belt 28 arranged along the length direction of the horizontal support bar 26, two driving shafts 29 which are respectively positioned at two ends of the conveyor belt 28 and are rotatably connected with the edges of the frame 25, and a conveying motor 30 which is arranged outside the frame 25 and is used for driving the driving shafts 29 to rotate. The underside of the conveyor belt 28 contacts the sheet material on the horizontal support bar 26 and the sheet material is conveyed forward by movement of the conveyor belt 28.

The frame 25 is rotatably connected with three conveying shafts 31 which are transversely arranged above the stamping platform 27, a driving motor 32 is arranged outside the frame 25, and a power output shaft of the driving motor is connected with one conveying shaft 31. One end of each conveying shaft 31 extends out of the frame 25 and is provided with a driving belt wheel, and all the driving belt wheels are in driving connection with each other by a belt 49. Each conveying shaft 31 is provided with a rolling gear 33 at two ends of the stamping platform 27, each rolling gear 33 corresponds to the position of the conveying belt 28 at the corresponding side, and the tooth heights of the outer Zhou Gunchi of the rolling gears 33 are gradually increased towards the direction of the horizontal supporting bar 26. When the rolling gear 33 rotates, the deepened tooth slot can be gradually pressed out at the edge of the plate, and the plate is conveyed forward, so that the aim of accurately conveying the plate is fulfilled. The outer circumference of each conveyor belt 28 is provided with a conveyor rack that mates with the outer Zhou Gunchi of the roller gear 33.

The upper die 1 and the lower die 2 are respectively positioned on the upper side and the lower side of the middle part of the two horizontal support bars 26. Two first hydraulic telescopic cylinders 34 are arranged on the top of the frame 25 downwards in the upper direction of the middle parts of the two horizontal support bars 26, and the telescopic shaft of each first hydraulic telescopic cylinder 34 is downwards connected with the upper end of the upper die 1. Two first upper transmission racks 35 are downwards arranged on two sides of the vertical horizontal support bar 26 of the upper die 1, and two first lower transmission racks 36 which are in one-to-one correspondence with the first upper transmission racks 35 are upwards arranged on two sides of the vertical horizontal support bar 26 of the lower die 2. A first transmission gear 37 meshed with each two first upper transmission racks 35 and a first lower transmission rack 36 are rotatably connected between each two opposite first upper transmission racks 35 and each first lower transmission rack 36 on the outer side of each horizontal support bar 26, and the upper die 1 and the lower die 2 are oppositely moved through the connection of the first upper transmission racks 35 and the first lower transmission racks 36 and the first transmission gears 37. The top of the frame 25 is provided with a first vertical chute 38 at each first transmission gear 37, and each first vertical chute 38 is slidably connected to a corresponding first upper transmission rack 35 and first lower transmission rack 36.

Two second hydraulic telescopic cylinders 39 are downwards arranged on one side, far away from the stamping platform 27, of the top of the frame 25 on the horizontal support bar 26, and the lower ends of telescopic shafts of the second hydraulic telescopic cylinders 39 are connected with an upper stamping shearing plate 40 which is horizontally arranged in a matched mode. A lower punching shear plate 41 is arranged below the upper punching shear plate 40 in the frame 25, the upper punching shear plate 40 is provided with an upper shearing edge 42 downwards, and the lower punching shear plate 41 is provided with a lower supporting bar 43 matched with the upper shearing edge 42 upwards. When the radiating fins are cut, the lower supporting bar 43 supports the connecting sheet at the lower part, and the upper shearing blade 42 can be matched with the lower supporting bar downwards to shear off a section of radiator. The upper punching shear plate 40 is provided with a second upper transmission rack 44 downwards on both sides of the vertical horizontal support bar 26, and the lower punching shear plate 41 is provided with a second lower transmission rack 45 in one-to-one correspondence with the second upper transmission rack 44 upwards on both sides of the vertical horizontal support bar 26. A second transmission gear 46 meshed with each other is rotatably connected between each two opposite second upper transmission racks 44 and each second lower transmission rack 45 outside each horizontal support bar 26, and the upper punching shear plate 40 and the lower punching shear plate 41 are moved towards each other through the connection between the second upper transmission racks 44 and the second lower transmission racks 45 and the second transmission gear 46. A second vertical sliding groove 47 is arranged at each second transmission gear 46 at the top of the frame 25, and each second vertical sliding groove 47 is in sliding connection with the corresponding second upper transmission rack 44 and second lower transmission rack 45.

The working principle of the radiator fin stamping forming equipment mainly comprises the key stages of plate conveying, die closing, fin stamping forming and cutting blanking.

In the sheet conveying stage, the sheet on the punching stage 27 is first conveyed precisely by the cooperation of the roller gear 33 and the conveying belt 28. The driving motor 32 drives the three transverse conveying shafts 31 to synchronously rotate, and power transmission is realized through the transmission belt wheels and the belt 49. The tooth heights of the outer Zhou Gunchi teeth of the rolling gears 33 at the two ends of the conveying shaft 31 are distributed gradually, and tooth grooves with gradually increased depths are pressed out of the edges of the plates during rotation, so that the plates can be ensured to advance linearly and slip is avoided. Simultaneously, the belt 49 conveyor above the horizontal support bar 26 is driven by the conveying motor 30, and the lower side of the conveying belt 28 is contacted with the upper surface of the plate material to form a bidirectional conveying resultant force, so that the plate material is stably conveyed to the stamping station.

In the mold closing stage, the two first hydraulic telescopic cylinders 34 synchronously extend downwards to push the upper mold 1 to vertically downwards. The first upper transmission racks 35 on the two sides of the upper die 1 and the first lower transmission racks 36 on the two sides of the lower die 2 are meshed and transmitted through the first transmission gears 37, so that the linear motion of the hydraulic cylinder is converted into symmetrical opposite motion of the upper die 2 and the lower die 2. The first vertical sliding groove 38 guides and constrains the driving rack, so that the upper die 2 and the lower die 2 are kept parallel in the die assembly process, and die damage or fin forming defects caused by unbalanced load are avoided. When the upper pressing plate frame 3 and the lower pressing plate frame 8 contact the plate, the upper supporting springs 7 and the lower supporting springs 12 are compressed to form flexible clamping of the plate, and the plate is prevented from being displaced in the punching process.

The fin stamping forming stage is divided into two steps of shearing forming and extending rolling. During shearing forming, the upper shearing strip 13 is matched with the lower limiting groove 14, the lower shearing strip 15 is matched with the upper limiting groove 16, and the plates are synchronously stamped into vertical downward fins and vertical upward connecting sheets by vertically and oppositely shearing stamping grooves which are connected end to end on the plates. In the extending rolling stage, the upper stamping extension bar 17 drives the upper rolling shaft 19 to move downwards, after the fins enter the lower supporting groove 18, the upper rolling shaft 19 carries out progressive rolling extension on the fins, the lower stamping extension bar 20 synchronously drives the lower rolling shaft 22 to move upwards, and after the connecting sheet enters the upper supporting groove 21, the lower rolling shaft 22 carries out symmetrical rolling extension on the connecting sheet. The stamping extension strips with gradually changed intervals are matched with the supporting grooves, so that the fins and the connecting sheets gradually reach the designed height in a plurality of stamping cycles. And then the bending strip 24 is downwards punched to bend the connecting sheet towards the direction of the punching groove, and the pressing strip 23 is downwards pressed again to press the connecting sheet into the punching groove and cover the connecting sheet, so that the precise forming of the radiating fin is completed.

In the blanking stage, the two second hydraulic telescopic cylinders 39 extend downwards synchronously, and the upper punching shear plate 40 is pushed to vertically press downwards. The second upper transmission racks 44 on both sides of the upper punching shear plate 40 are engaged with the second lower transmission racks 45 on both sides of the lower punching shear plate 41 through the second transmission gears 46, so that the upper and lower shearing plates are ensured to move in parallel. The upper cutting edge 42 cooperates with the lower support bar 43 to form a shearing force at the location of the connecting tab to cut and separate the formed fin assembly from the sheet material. The second vertical sliding groove 47 guides the driving rack to ensure cutting precision. And transferring the cut radiator fin component to a finished product area through a subsequent conveying device to complete the whole stamping forming process.

It should be further noted that, in the present application (especially, the description), all "setting" and similar descriptors in the present application express that there is or exists a connection relationship between two structures, but the specific means by which the two structures are connected is not limited too much, and is usually a conventional connection means, that is, it should be understood that the means is the prior art, and need not be repeated too much. For example, "n is disposed on m", only n is disposed on m, and both are specifically disposed in the protection scope of the present application by welding, riveting, adhesive connection or integral molding, and "y is disposed on x, only y and x can rotate relatively, and both are connected by bearing rotation or y directly passes through x and is connected with x rotation, or other realizable modes are disposed in the protection scope of the present application.

The above description is only illustrative of the preferred embodiments of the present invention and is not intended to limit the scope of the present invention, and any alterations and modifications made by those skilled in the art based on the above disclosure shall fall within the scope of the appended claims.

Claims

1. The utility model provides a radiator fin stamping die, includes upper mould (1) and lower mould (2) that set up relatively, its characterized in that, the downside swing joint of upper mould (1) has upper clamp plate frame (3), upper mould (1) with be connected with between upper clamp plate frame (3) and go up supporting spring (7), the upside swing joint of lower mould (2) has lower clamp plate frame (8), be connected with between lower mould (2) and lower clamp plate frame (8) down supporting spring (12);

One side of the lower end of the upper die (1) is downwards provided with an upper shearing strip (13) capable of penetrating through the upper pressing plate frame (3), the lower pressing plate frame (8) is downwards provided with a lower limiting groove (14) matched with the upper shearing strip (13), one side of the upper end of the lower die (2) is upwards provided with a lower shearing strip (15) capable of penetrating through the lower pressing plate frame (8), the upper shearing strip (13) and the lower shearing strip (15) are connected end to end in a horizontal plane, and the upper pressing plate frame (3) is upwards provided with an upper limiting groove (16) matched with the lower shearing strip (15);

a plurality of upper stamping extending strips (17) are arranged at the lower end of the upper die (1) at equal intervals downwards on one side of the upper shearing strip (13), a plurality of lower supporting grooves (18) which are in one-to-one correspondence with the upper stamping extending strips (17) are arranged downwards on the lower pressing plate frame (8), a plurality of lower stamping extending strips (20) are arranged at equal intervals upwards on one side of the lower shearing strip (15) at the upper end of the lower die (2), and a plurality of upper supporting grooves (21) which are in one-to-one correspondence with the lower stamping extending strips (20) are arranged upwards on the upper pressing plate frame (3);

The distance between the upper punching extension bar (17) and the inner wall of the lower supporting groove (18) close to the upper shearing bar (13) gradually becomes smaller in the direction away from the upper shearing bar (13), and the distance between the lower punching extension bar (20) and the inner wall of the upper supporting groove (21) close to the lower shearing bar (15) gradually becomes smaller in the direction away from the lower shearing bar (15);

the lower end of the upper pressing plate frame (3) is downwards provided with a pressing strip (23) at the position, far away from the upper shearing strip (13), of the upper punching extension strip (17).

2. The stamping die for the radiator fins according to claim 1, wherein a plurality of upper sliding holes (4) are formed through the edge of the upper die (1), a plurality of upper sliding shafts (5) which are in one-to-one correspondence with the upper sliding holes (4) are upwards arranged on the edge of the upper pressing plate frame (3), an upper limit cap (6) is arranged at the upper end of each upper sliding shaft (5) extending out of the corresponding upper sliding hole (4), and an upper supporting spring (7) positioned between the upper die (1) and the upper pressing plate frame (3) is sleeved outside each upper sliding shaft (5).

3. The stamping die for the radiator fins according to claim 1, wherein a plurality of lower sliding holes (9) are formed through the edge of the lower die (2), a plurality of lower sliding shafts (10) which are in one-to-one correspondence with the lower sliding holes (9) are downwards arranged on the edge of the lower pressing plate frame (8), lower limit caps (11) are arranged at the lower ends of the lower sliding shafts (10) which extend out of the corresponding lower sliding holes (9), and lower supporting springs (12) positioned between the lower die (2) and the lower pressing plate frame (8) are sleeved outside the lower sliding shafts (10).

4. A radiator fin punching die according to claim 1, characterized in that the lower end of each upper punching extension bar (17) on the side close to the upper shear bar (13) is rotatably connected with an upper roll shaft (19) provided in the width direction thereof, and the upper end of each lower punching extension bar (20) on the side close to the lower shear bar (15) is rotatably connected with a lower roll shaft (22) provided in the width direction thereof.

5. The radiator fin stamping die according to claim 1, wherein a bending strip (24) is downwardly arranged between an upper stamping extension strip (17) which is farthest from the upper shearing strip (13) and the pressing strip (23) at the lower end of the upper pressing plate frame (3), the lower end of the bending strip (24) is a bevel which is downwardly inclined towards a direction which is far away from the pressing strip (23), and the distance between the bending strip (24) and the upper stamping extension strip (17) which is farthest from the upper shearing strip (13) and the distance between the bending strip (24) and the pressing strip (23) are equal to the distance between two adjacent upper stamping extension strips (17).

6. A radiator fin stamping forming device, based on any one of claims 1-5, comprising a frame (25), characterized in that, two opposite horizontal support bars (26) are horizontally arranged in the middle of the frame (25), a stamping platform (27) connected with one end of each of the two horizontal support bars (26) and having the same height is horizontally arranged at the inlet of the frame (25), a plurality of belt (49) conveyors distributed along the length direction of each horizontal support bar (26) are arranged above each horizontal support bar (25), each belt (49) conveyor comprises a conveying belt (28) arranged along the length direction of each horizontal support bar (26), two driving shafts (29) respectively arranged at two ends of the conveying belt (28) and rotationally connected with the edges of the frame (25), and a conveying motor (30) arranged outside the frame (25) and used for driving the driving shafts (29) to rotate;

The upper die (1) and the lower die (2) are respectively positioned on the upper side and the lower side of the middle parts of two horizontal support bars (26), a plurality of first hydraulic telescopic cylinders (34) are arranged on the top of the frame (25) downwards in the upper direction of the middle parts of the two horizontal support bars (26), telescopic shafts of each first hydraulic telescopic cylinder (34) are downwards connected with the upper end of the upper die (1), a plurality of first upper transmission racks (35) are downwards arranged on two sides of the upper die (1) perpendicular to the horizontal support bars (26), a plurality of first lower transmission racks (36) which are in one-to-one correspondence with the first upper transmission racks (35) are upwards arranged on two sides of the lower die (2) perpendicular to the horizontal support bars (26), and a first transmission gear (37) meshed with each first upper transmission rack (35) and each first lower transmission rack (36) are rotatably connected on the outer side of each horizontal support bar (26);

The top of frame (25) in horizontal support bar (26) keep away from one side of punching press platform (27) installs many second hydraulic telescoping cylinders (39) downwards, and the lower extreme cooperation of the telescopic shaft of many second hydraulic telescoping cylinders (39) is connected with upper punching press shearing plate (40) of level setting, in frame (25) in the below of upper punching press shearing plate (40) is provided with lower punching press shearing plate (41) with it matched with, upper punching press shearing plate (40) are provided with shearing sword (42) downwards, lower punching press shearing plate (41) upwards be provided with upper shearing sword (42) matched with lower support bar (43), upper punching press shearing plate (40) are perpendicular upper transmission rack (44) are all provided with down on the both sides of horizontal support bar (26), lower punching press shearing plate (41) are perpendicular both sides of horizontal support bar (26) all upwards be provided with second lower transmission rack (45) of second upper transmission rack (44) one-to-one, every horizontal support bar (26) are connected with second transmission rack (45) between the second transmission rack (46) and the second transmission rack (46) of two pairs of two sides.

7. The radiator fin press forming device according to claim 6, wherein the frame (25) is rotatably connected with a plurality of conveying shafts (31) which are transversely arranged above the press platform (27), a driving motor (32) is installed outside the frame (25), a power output shaft of the driving motor (32) is connected with one of the conveying shafts (31), one end of each conveying shaft (31) extends out of the frame (25) and is provided with a driving belt wheel, all the driving belt wheels are in transmission connection in pairs through belts (49), rolling gears (33) are arranged at two ends of each conveying shaft (31) on the press platform (27), each rolling gear (33) corresponds to a position of a conveying belt (28) on the corresponding side, and tooth heights of outer Zhou Gunchi of the rolling gears (33) are gradually increased towards the direction of the horizontal support bar (26).

8. A radiator fin press forming apparatus according to claim 7, wherein an outer periphery of each of the conveyor belts (28) is provided with a conveyor rack that cooperates with a hobbing of an outer periphery of the roller gear (33).

9. The radiator fin press molding apparatus as claimed in claim 6, wherein a first vertical runner (38) is provided at a top of the frame (25) at each first transmission gear (37), each first vertical runner (38) is slidably connected to a corresponding first upper transmission rack (35) and a corresponding first lower transmission rack (36), a second vertical runner (47) is provided at a top of the frame (25) at each second transmission gear (46), and each second vertical runner (47) is slidably connected to a corresponding second upper transmission rack (44) and a corresponding second lower transmission rack (45).