CN112008069A

CN112008069A - Trimming die for aluminum alloy die castings

Info

Publication number: CN112008069A
Application number: CN202010642891.6A
Authority: CN
Inventors: 朱孝林
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-06
Filing date: 2020-07-06
Publication date: 2020-12-01

Abstract

The invention relates to an edge cutting die for aluminum alloy die castings, which comprises an upper die plate, an upper die tool apron, a lower die plate and a lower die tool apron, wherein a first upper die spring is arranged between the periphery of a limiting plate and an upper die fixing plate, a second upper die spring is arranged between the middle part of the limiting plate and the upper die fixing plate, one side of the top of the upper die tool apron is movably connected with an upper die tool set which is elastically connected with the second upper die spring in the vertical direction, a first lower die spring is fixed on one side of the lower die plate far away from die pins, the top of the lower die tool apron is provided with a lower die tool set, the first lower die spring is elastically connected with the periphery of the lower die tool apron in the vertical direction, and the bottom of the. This die casting side cut mould utilizes the spring in the die carrier from top to bottom to produce the die-cut that floats, cuts off the runner or the material limit of die casting, makes the product production qualification rate promote by a wide margin, and whole production shearing process is simple, and the processing stability is high to be favorable to automated production more.

Description

Trimming die for aluminum alloy die castings

Technical Field

The invention relates to the technical field of die manufacturing, in particular to an edge cutting die for an aluminum alloy die casting.

Background

For aluminum alloy die castings fed from the side edges of the product, after forming, leaving the feed stems and the edges connected to the edges of the product, they are usually removed by hand cutting and finished with a tool such as a sander to make the surface energy of the product acceptable. In order to improve work efficiency, people can design, make the trimming die who is used for cutting edge specially and repaiies, it includes the mould, lower mould and guide structure, be equipped with the side cut edge of a knife on going up the mould, can set up the product location structure that suits with the appearance profile of product on the lower mould so that place the product that needs the side cut, product location structure still includes the locating lever that the tip has certain tapering usually, so that utilize the shaping hole on the product to carry out accurate location to the product automatically, get rid of feeding handle etc. through the die-cut mode of similar panel beating with the product.

The current die-cutting technology of die casting product material limit and runner mainly has two kinds: the single-shearing edge cutting process of punching the edges in the same direction in a fixed direction is a double-shearing edge cutting process of punching the edges in two opposite directions at a fixed distance and keeping a certain distance between the two edges. During the use process, the following are found: when a single shear is adopted to carry out die-casting on a product flow channel and a material edge, the connection part of the flow channel and the product generates jumping and shortage on the product, so that the product is poor. When the material edges and the flow channels of the die-casting products are cut by the pair of scissors, the knife edges are relatively punched, so that the two knife edges are ensured not to collide, if the distance between the two knife edges is too short, the knife edges may collide to cause knife edge damage, and if the distance between the two knife edges is too far, the residual height of the joint of the products and the flow channels is too high, so that the material edges and the flow channels of the products cannot be cleaned completely, manual deburring needs to be added, and the production cost is increased.

Disclosure of Invention

The invention aims to provide a trimming die for an aluminum alloy die casting, which solves the problems in the prior art.

In order to achieve the purpose, the technical scheme of the invention is as follows:

a trimming die for aluminum alloy die castings comprises an upper die plate, an upper die cutter holder, a lower die plate and a lower die cutter holder, wherein the upper die plate is fixedly connected with the upper die cutter holder, four ends of the upper die plate are provided with guide holes, guide posts are fixed on the periphery of the lower die plate, the lower die plate is movably connected with the upper die plate up and down through the guide posts and the guide holes, an upper die fixing plate is fixed on one side of the upper die plate, which is far away from the upper die cutter holder, through a supporting plate, a limiting plate is arranged between the upper die fixing plate and the periphery of the limiting plate, a first upper die spring is arranged between the periphery of the limiting plate and the upper die fixing plate, a second upper die spring is arranged between the middle part of the limiting plate and the upper die fixing plate, one side of the top of the upper die cutter holder is movably connected with an upper die cutter, one side of the lower template is provided with a die foot, one side of the lower template, which is far away from the die foot, is fixed with a first lower die spring, the top of the lower die tool apron is provided with a lower die tool set, the first lower die spring is elastically connected with the periphery of the lower die tool apron in the vertical direction, one side of the lower template, which is far away from the lower die tool apron, is provided with a male die fixing plate, one side of the top of the male die fixing plate is fixed with a male die, and the bottom of the male die fixing plate is elastically connected with the lower template in the vertical direction through a second lower.

In the above scheme, the upper die cutter set is arranged at the top of the upper die cutter holder by the plurality of upper die cutter blocks according to the shape of the product, the lower die cutter set is arranged at the top of the lower die cutter holder by the plurality of lower die cutter blocks according to the shape of the product, and the position of the lower die cutter set corresponds to the position of the upper die cutter set in a one-to-one manner.

In the scheme, the top of the ejector plate is provided with a first limiting column, the top of the lower die tool apron is provided with a second limiting column, and the first limiting column and the second limiting column form a limiting part of the trimming die.

In the above scheme, the first limit column and the second limit column are both cylindrical structures.

In the scheme, a shovel base is fixed on one side, away from the upper die cutter set, of the top of the upper die cutter holder, a pressing strip is fixed on the other side of the top of the male die fixing plate, a shovel base matched with the shovel base is arranged between the pressing strip and the male die, and the shovel base, the pressing strip and the shovel base form a positioning component of the trimming die.

In the scheme, the pressing strip is U-shaped, a pushing block is arranged in a U-shaped groove of the pressing strip, and the pushing block is elastically connected with the pressing strip in the horizontal direction through a spring.

In the scheme, the middle of one outer side of the lower template is fixedly provided with the material handle supporting seat, and the top of the material handle supporting seat is fixedly provided with the material handle support.

In the scheme, the material handle support comprises a frame barrel and a top cover, and the top cover is in threaded connection with the frame barrel through a screw rod.

In the scheme, the lower die tool apron is elastically connected with the first lower die spring through the base plate arranged at the bottom.

In the scheme, the four outer ends of the lower template are vertically fixed with the mold locking strips, and the tops of the mold locking strips are fixedly connected with the upper template through the long waist holes and the screws.

Compared with the prior art, the invention has the beneficial effects that: this side cut mould contacts the product through last mould subassembly earlier, then utilizes the punching press power and goes up the spring force of mould and cut the runner or the material limit of product, continues the downstream in-process, when the spring of last mould spring and lower mould all reached maximum spacing, the spring force forms rebound effect and makes upper and lower sword piece upward movement, cuts the runner or the material limit of product once more, stops because of the effect of spacing post at last, accomplishes one and floats to cutting die-cut process. This die casting side cut mould utilizes the spring production in the die carrier die-cut of floating about, cuts runner or the material limit of die casting, cuts and cuts with the manual work for traditional machining mode and have the reliable quality, production is stable, the cost is lower, the punching of product cuts advantages such as section is more level and more smooth, makes the product production qualification rate promote by a wide margin, and whole production shearing process is simple, and the processing stability is high to be favorable to automated production more.

Drawings

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

FIG. 2 is a side view of the overall structure of the present invention;

FIG. 3 is a schematic view of the overall structure of the upper die plate and the upper die holder according to the present invention;

FIG. 4 is a schematic view of the overall structure of the lower die plate and the lower die tool apron of the present invention;

fig. 5 is a schematic view of the overall structure of the upper die cutter set and the lower die cutter set in the invention.

Reference numbers in the figures: 1-upper template; 11-a support plate; 12-an upper die fixing plate; 13-a first upper die spring; 14-a second upper die spring; 15-limiting plate; 16-a pilot hole; 2-upper die cutter holder; 21-upper die cutter group; 22-a material ejecting plate; 23-a first restraint post; 3-shovel base; 31-pressing strips; 32-a shovel base; 33-a push block; 4-a lower template; 41-mould feet; 42-a first lower die spring; 43-guide posts; 44-a mold locking strip; 45-material handle supporting seat; 46-a charge holder support; 47-a second lower die spring; 5-lower die tool apron; 51-lower die cutter set; 52-backing plate; 53-a second restraint post; 6-a male die fixing plate; 61-male die.

Detailed Description

The technical solution of the present invention is further described in detail with reference to the accompanying drawings and examples.

As shown in fig. 1 and 2, the trimming die for the aluminum alloy die castings comprises an upper die plate 1, an upper die cutter holder 2, a lower die plate 4 and a lower die cutter holder 5, wherein the upper die plate 1 and the upper die cutter holder 2 are fixedly welded and connected, guide holes 16 are formed in four ends of the upper die plate 1, guide pillars 43 are fixed on the periphery of the lower die plate 4, and the lower die plate 4 is movably connected with the upper die plate 1 up and down through the guide pillars 43 and the guide holes 16. In the implementation process, the upper template 1 and the lower template 4 are fixed at the corresponding mounting positions of the upper and lower dies of the die spotting machine.

Referring to fig. 3, an upper mold fixing plate 12 is fixed to a side of the upper mold plate 1 away from the upper mold tool apron 2 through a support plate 11, and the upper mold fixing plate 12 is fixed to a corresponding mounting rack of an upper mold of the mold closing machine through screws in implementation. A limiting plate 15 is arranged between the upper die fixing plate 12 and the upper die plate 1, the limiting plate 15 is a flat plate, and when the upper die cutter set 21 moves in the vertical direction, the limiting plate 15 limits the elastic movement of the upper die cutter set 21 by contacting the bottom of the upper die plate 1, so that the upper die cutter set is prevented from colliding and contacting with the lower die cutter set 51. First upper die springs 13 are arranged between the periphery of the limiting plate 15 and the upper die fixing plate 12, and second upper die springs 14 are arranged between the middle of the limiting plate 15 and the upper die fixing plate 12. One side of the top of the upper die tool apron 2 is movably connected with an upper die tool set 21 which is elastically connected with a second upper die spring 14 in the vertical direction, and the second upper die spring 14 enables the upper die tool set 21 to elastically move up and down in the vertical direction. When the die is implemented, the first upper die spring 13 and the second upper die spring 14 both adopt compression springs, and the compression springs of corresponding models are replaced according to different shearing product runners and material edges of the die.

An ejector plate 22 is fixed to the upper die cutter holder 2 in the inner position of the upper die cutter group 21, and the ejector plate 22 is used for ejecting the appearance of a product to fix the product when the upper die cutter holder 2 moves to the maximum limit in the trimming motion, so that the product flow channel and the material edge can be continuously cut back through the inertial resilience of the upper die cutter group 21 and the lower die cutter group 51.

Referring to fig. 4, a mold leg 41 is disposed on one side of the lower mold plate 4, and the mold leg 41 is fixed to a corresponding mounting frame of a lower mold of a mold closing machine by screws in the process of implementation. A first lower die spring 42 is fixed on one side of the lower die plate 4 far away from the die leg 41, and the first lower die spring 42 is elastically connected with the periphery of the lower die tool apron 5 in the vertical direction. In implementation, the first lower die spring 42 is a belleville spring, and the belleville spring with the corresponding model is replaced according to different product shearing runners and material edges of the die.

The top of lower mould blade holder 5 is equipped with lower mould knife tackle 51, and lower mould knife tackle 51 is located the middle part of lower mould blade holder 5, and both are swing joint from top to bottom through first lower mould spring 42, specifically are backing plate 52 and first lower mould spring 42 elastic connection that lower mould blade holder 5 was equipped with through the bottom. One side that lower bolster 4 kept away from lower mould blade holder 5 is equipped with punch plate 6, and top one side of punch plate 6 is fixed with terrace die 61, and second lower mould spring 47 and lower bolster 4 elastic connection in vertical direction are passed through to punch plate 6's bottom, and when implementing, second lower mould spring 47 adopts compression spring, according to the difference on the shearing product runner of mould and material limit, changes the compression spring of corresponding model.

Referring to fig. 5, in the above scheme, the upper die cutter set 21 is formed by arranging a plurality of upper die cutter blocks on the top of the upper die cutter holder 2 according to the shape of the product, the lower die cutter set 51 is formed by arranging a plurality of lower die cutter blocks on the top of the lower die cutter holder 5 according to the shape of the product, and the positions of the lower die cutter set 51 correspond to the positions of the upper die cutter set 21 one by one, so that the cutter edges of the upper die cutter set and the lower die cutter set are opposite one by one, and the product runner and the material edge.

A material handle supporting seat 45 is fixedly welded in the middle of the outer side of the lower template 4, a material handle support 46 is fixed at the top of the material handle supporting seat 45, the material handle support 46 comprises a frame barrel and a top cover, the top cover is in threaded connection with the frame barrel through a screw rod, the top cover is changed relative to the height position of the frame barrel through screwing the top cover, and product material handles with different heights are conveniently fixed. And the four outer ends of the lower template 4 are vertically fixed with mold locking strips 44, and the tops of the mold locking strips 44 are fixedly connected with the upper template 1 through long waist holes and screws. Adopt fork truck transport or place the clapper die spotting press to this side cut mould when conveniently removing at ordinary times.

As a preferable scheme, in the above scheme, the first limiting column 23 is installed at the top of the ejector plate 22, and the second limiting column 53 is installed at the top of the lower die tool apron 5, and the first limiting column and the second limiting column can be installed in a placing or bolt fixing manner. First spacing post 23 and the spacing post 53 of second are the cylinder tubular structure, and first spacing post 23 and the spacing post 53 of second have constituted this limit part of side cut mould, and when the relative motion of the last mould that upper die plate 1 and last mould blade holder 2 constitute and the lower mould that lower bolster 4 and lower mould blade holder 5 constitute reached the furthest size, limit part such as first spacing post 23 and the spacing post 53 of second can withstand upper die plate 1 to lower bolster 4 is the supporting plane, prevents that upper die plate 1 from continuing to descend and run into bad product.

As a preferable scheme, in the scheme, the shovel base 3 is fixedly welded on one side of the top of the upper die tool apron 2 away from the upper die tool set 21, the pressing strip 31 is fixed on the other side of the top of the male die fixing plate 6, the pressing strip 31 is U-shaped, a pushing block 33 is arranged in a U-shaped groove of the pressing strip, the pushing block 33 is elastically connected with the pressing strip 31 in the horizontal direction through a spring, and the pushing block 33 pushes and fixes the product through pushing of the spring. Be equipped with between layering 31 and the terrace die 61 with shovel base 3 matched with shovel base 32, shovel base 3, layering 31 and shovel base 32 have constituted the locating part of this side cut mould, through shovel base 3, layering 31 and shovel base 32 etc. locating part with the product when cuting product runner and material limit, stable firm fixes the product body, carries out steady shearing from top to bottom to the runner and the material limit of product.

The die-cut working process of this patent: install corresponding last mould knife tackle 21 on last mould blade holder 2 according to the product of difference, install corresponding lower mould knife tackle 51 on lower mould blade holder 5, place the product on whole die carrier down, and support the material handle of product through material handle support 46, make things convenient for the fixed of other positions of product, then fix firmly the product through shovel base 3, layering 31 and shovel base 32, through operation clapper die spotting press, make whole last mould carrier through the cooperation shearing motion downwards of guiding hole 16 and guide pillar 43, two upper and lower templates just do relative motion like this.

When the upper and lower formworks move relatively, the ejector plate 22 first contacts the product to generate pre-pressure. Then, when the first upper die spring 13 acts on the lower surface of the upper die plate 1, the ejector plate 22, the product and the male die 61 are tightly attached and move downwards, and the knife edge of the lower die knife set 51 is contacted with the lower surface of a product flow passage or a material edge. When the upper die plate 1 reaches the limit position due to the first limit column 23, the ejector plate 22, the product and the male die 61 stop moving. At this time, the second upper die spring 14 starts to act on the upper die plate 1, the knife edge of the upper die knife group 21 continues to move downwards to contact the upper surface of the product runner or the material edge, the upper knife edge and the lower knife edge of the die relatively move along the guide sleeve direction of the guide pillar 43, the upper knife edge and the lower knife edge are contacted to shear the product runner or the material edge, and at this time, under the action of the first lower die spring 42, the upper die knife group 21 and the lower die knife group 51 continue to move downwards for a certain distance.

Under the elastic action of the first lower die spring 42, after the upper and lower knife edges are in contact with the limit, the upper and lower knife edges stop moving relatively, and under the action of the spring structure of the second lower die spring 47, a rebound effect is formed, the upper and lower knife edges continue to move upwards for a certain distance along the original direction of the movement of the upper knife edge, the residual flow channel or material edge of the product is cut, and after the second limit column 53 is in contact with the limit, the movement is stopped, and the one-time floating opposite-cutting process is completed.

To sum up, this side cut mould contacts the product through last mould subassembly earlier, then utilizes the punching press and goes up the spring force of mould to cut the runner or the material limit of product, continues the downstream in-process, when the spring of last mould spring and lower mould all reached maximum spacing, the spring force forms rebound effect and makes upper and lower sword piece upward movement, cuts the runner or the material limit of product once more, stops because of the effect of spacing post at last, accomplishes once to float and cut die-cut process.

This die casting side cut mould utilizes the spring production in the die carrier die-cut of floating about, cuts runner or the material limit of die casting, cuts and cuts with the manual work for traditional machining mode and have the reliable quality, production is stable, the cost is lower, the punching of product cuts advantages such as section is more level and more smooth, makes the product production qualification rate promote by a wide margin, and whole production shearing process is simple, and the processing stability is high to be favorable to automated production more.

The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides an edge cutting die of aluminum alloy die casting, includes cope match-plate pattern (1), last mould blade holder (2), lower bolster (4) and lower mould blade holder (5), cope match-plate pattern (1) and last mould blade holder (2) fixed connection, guiding hole (16) have been seted up to four ends of cope match-plate pattern (1), be fixed with guide pillar (43) around lower bolster (4), swing joint about lower bolster (4) pass through guide pillar (43) and guiding hole (16) and cope match-plate pattern (1), its characterized in that: an upper die fixing plate (12) is fixed on one side, far away from the upper die cutter holder (2), of the upper die plate (1) through a supporting plate (11), a limiting plate (15) is arranged between the upper die fixing plate (12) and the upper die plate (1), a first upper die spring (13) is arranged between the periphery of the limiting plate (15) and the upper die fixing plate (12), a second upper die spring (14) is arranged between the middle of the limiting plate (15) and the upper die fixing plate (12), an upper die cutter set (21) which is elastically connected with the second upper die spring (14) in the vertical direction is movably connected to one side of the top of the upper die cutter holder (2), a material ejecting plate (22) is fixed on the inner position of the upper die cutter set (21) of the upper die cutter set (2), a die foot (41) is arranged on one side of the lower die plate (4), and a first lower die spring (42) is fixed on one side, far away from, the top of lower mould blade holder (5) is equipped with lower mould knife tackle (51), first lower mould spring (42) and lower mould blade holder (5) all around in vertical direction elastic connection, lower bolster (4) are kept away from one side of lower mould blade holder (5) is equipped with punch plate (6), top one side of punch plate (6) is fixed with terrace die (61), the bottom of punch plate (6) is through second lower mould spring (47) and lower bolster (4) in vertical direction elastic connection.

2. The trimming die for aluminum alloy die castings according to claim 1, wherein: go up mould knife tackle (21) and arrange the top at last mould blade holder (2) by a plurality of mould tool blocks according to the shape of product on, lower mould knife tackle (51) are arranged at the top of lower mould blade holder (5) by a plurality of lower mould tool blocks according to the shape of product, the position of lower mould knife tackle (51) and the position one-to-one of last mould knife tackle (21).

3. The trimming die for aluminum alloy die castings according to claim 1, wherein: the top of flitch (22) is equipped with first spacing post (23), the top of lower mould blade holder (5) is equipped with second spacing post (53), first spacing post (23) and second spacing post (53) have constituted this limit part of side cut mould.

4. The trimming die for aluminum alloy die castings according to claim 3, wherein: the first limiting column (23) and the second limiting column (53) are both cylindrical structures.

5. The trimming die for aluminum alloy die castings according to claim 1, wherein: go up the top of mould blade holder (2) and keep away from go up one side of mould knife tackle (21) and be fixed with shovel base (3), the top opposite side of punch plate (6) is fixed with layering (31), be equipped with between layering (31) and terrace die (61) with shovel base (3) matched with shovel base (32), shovel base (3), layering (31) and shovel base (32) have constituted the locating part of this side cut mould.

6. The trimming die for aluminum alloy die castings according to claim 5, wherein: the pressing strip (31) is U-shaped, a push block (33) is arranged in a U-shaped groove of the pressing strip, and the push block (33) is elastically connected with the pressing strip (31) in the horizontal direction through a spring.

7. The trimming die for aluminum alloy die castings according to claim 1, wherein: a material handle supporting seat (45) is fixed in the middle of one outer side of the lower template (4), and a material handle support (46) is fixed at the top of the material handle supporting seat (45).

8. The trimming die for aluminum alloy die castings according to claim 7, wherein: the material handle support (46) comprises a frame barrel and a top cover, and the top cover is in threaded connection with the frame barrel through a screw rod.

9. The trimming die for aluminum alloy die castings according to claim 1, wherein: the lower die tool apron (5) is elastically connected with a first lower die spring (42) through a base plate (52) arranged at the bottom.

10. The trimming die for aluminum alloy die castings according to claim 1, wherein: and four external ends of the lower template (4) are vertically fixed with mold locking strips (44), and the tops of the mold locking strips (44) are fixedly connected with the upper template (1) through long waist holes and screws.