CN216989714U

CN216989714U - Anti-deformation hub forging die

Info

Publication number: CN216989714U
Application number: CN202220035555.XU
Authority: CN
Inventors: 章可泽
Original assignee: Ningbo Runcheng Intelligent Technology Co ltd
Current assignee: Ningbo Runcheng Intelligent Technology Co ltd
Priority date: 2022-01-07
Filing date: 2022-01-07
Publication date: 2022-07-19
Anticipated expiration: 2032-01-07

Abstract

The utility model relates to the technical field of dies, and discloses an anti-deformation hub forging die which comprises an upper die and a lower die, wherein the lower die comprises a lower die plate, a lower die core arranged on the lower die plate and a lower die body fixedly sleeved on the lower die core, the upper die comprises an upper die plate and an upper die core, a forging cavity is formed among the upper die core, the lower die core and the lower die body during die assembly, the lower die body comprises at least two die body components which can be mutually far away from the lower die core or form a circular inner ring after being mutually attached to the lower die core, the mutual approaching or departing of the die body components is controlled by a first driving mechanism, a tightening ring clamped outside the attached die body components during die assembly is vertically lifted on the upper die, the lifting of the tightening ring is controlled by a second driving mechanism fixed on the upper die plate, and a connection strengthening mechanism for driving the mutual connection of the tightening ring and the strength of the tightening ring is simultaneously arranged between the tightening ring and the second driving mechanism, the die can ensure the forging quality and reduce the forging cost.

Description

Anti-deformation hub forging die

Technical Field

The utility model relates to the technical field of dies, in particular to an anti-deformation hub forging die.

Background

The structure of a traditional forging die can refer to a hub forging die disclosed in chinese patent with publication number CN106238647A, and the hub forging die comprises an upper die and a lower die, wherein the lower die comprises a lower die plate, a lower die body mounted on the lower die plate, and a lower die core, the lower die core comprises a forging core portion and a base portion located below the forging core portion, and an annular cavity for forging a rim is formed between the forging core portion and the lower die body.

At present, the lower die body of a forging die which is visible in the market is of an integrated annular structure, a forged hub is filled between the lower die body and the lower die core in an interference manner, the hub can be ejected only by forcibly ejecting a lower die ejector, and after the forged hub is not completely cooled, under the ejection of the ejector, if the spoke of the hub is not deformed, enough thickness is needed to ensure, so that a blank spinning process is needed to remove redundant parts, and the production cost is high; if the lower die body is formed by splicing a plurality of die body assemblies and can be separated from each other, the demolding is very easy, but the lower die body after the splicing is difficult to resist the hammering force of a forging hammer, and a gap is easily formed at the splicing position, so that the concentricity of the lower die body is damaged, the injection molding cavity is deformed, and finally, the hub is deformed to form waste products.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an anti-deformation hub forging die capable of reducing cost and ensuring forging quality, and aims to solve the problems that the existing integrated lower die body is high in hub forging cost, the split lower die body is adopted to reduce the hub cost, and the hub forging is easy to deform.

In order to solve the technical problems, the utility model provides the following technical scheme: an anti-deformation hub forging die comprises an upper die and a lower die, wherein the lower die comprises a lower die plate, a lower die core arranged on the lower die plate and a lower die body fixedly sleeved on the lower die core, the upper die comprises an upper die plate and an upper die core positioned right above the lower die core, a forging cavity is formed among the upper die core, the lower die core and the lower die body when the die is closed, the lower die body comprises at least two die body components which can be mutually far away from the lower die core or form a circular inner ring after being mutually attached and are attached outside the lower die core, the mutual approaching or remote of the die body components is controlled by a first driving mechanism, a tightening ferrule clamped outside the attached die body assembly during die assembly is vertically arranged on the upper die in a lifting way, the lifting of the tightening ferrule is controlled by a second driving mechanism fixed on the upper die plate, and a joint reinforcing mechanism which drives the two to be connected with each other and simultaneously reinforces the strength of the tightening ferrule is arranged between the tightening ferrule and the second driving mechanism.

Through the scheme: the mold body components are driven by the first driving mechanism to be close to each other and be attached to form the lower mold body with the annular inner annular wall, so that a closed forging cavity can be formed between the upper mold core and the lower mold core during mold closing, the mold body components are far away from each other and directly separated from a rim forming surface during mold releasing, the mold body components can be taken down only by upward light jacking, and the hub blank cannot be deformed without large extrusion force during the unloading process. Just can ensure wheel hub's quality, and the keeping of die body subassembly concentricity relies on the setting of lock ring lasso, the lock ring lasso can lock ring die body subassembly, avoid forging pressure to cause the die body subassembly extrusion clearance to appear, guarantee the concentricity of die body subassembly, the linking strengthening mechanism who adds plays the linking effect, be convenient for realize fixed connection between second actuating mechanism and the lock ring lasso, and simultaneously, thereby the thickness that can also increase the fastening lasso increases the anti deformability of lock ring lasso, prolong its life.

Furthermore, the second driving mechanism comprises at least 2 groups of second oil cylinders which are uniformly arranged around the tightening ferrule at intervals in the circumferential direction, the cylinder body of each second oil cylinder is fixed on the upper template, the piston rod of each second oil cylinder is vertically arranged downwards, and the end part of each piston rod is fixedly connected with the connection reinforcing mechanism.

Through the scheme: set up the second hydro-cylinder more than two, just can drive the stable elevating movement of lock ring lasso to ensure the lock ring lasso can accurately cup joint the die body subassembly outside after the concatenation.

Furthermore, the connection reinforcing mechanism comprises a reinforcing ferrule which is fixedly arranged on the outer ring wall of the tightening ferrule and is opposite to the die body assembly during die assembly, and the end part of a piston rod of the second oil cylinder is fixedly connected with the upper end face of the reinforcing ferrule.

Through the scheme: strengthen the lasso and tightly bind round the lasso and be connected the back, expose the piston rod that the up end can supply the second hydro-cylinder and connect, it is convenient to connect, strengthens the lasso and tightly binds round the common tight die body subassembly of lasso, can reduce the deformation rate of strengthening the lasso, prolongs its life.

Furthermore, the outer ring wall of the tightening ring is sunken to form an annular groove for embedding the inner ring of the reinforcing ring, the reinforcing ring comprises two half rings of which two ends are respectively spliced and fixed or one end is hinged and the other end is spliced and fixed, and the splicing positions of the two half rings are fixedly connected through a fixing structure.

Through the scheme: the connection mode that the reinforcing ferrule is embedded into the annular groove of the outer wall of the tightening ferrule is firm, the reinforcing ferrule is not easy to deviate, the two half-ring splicing mode is easy to install, and the two setting modes can realize the assembly of the reinforcing ferrule and the fixed connection of the reinforcing ferrule and the tightening ferrule.

Furthermore, the fixing structure comprises splicing blocks which are arranged at the splicing ends of the two half circles and can be spliced mutually, and through holes which are correspondingly arranged on the splicing blocks of the two half circles, a bolt penetrates between the two through holes, and limiting nuts which can keep the two splicing blocks in a splicing state are arranged at the two ends of the bolt.

Through the scheme: the splicing end is spliced through the splicing block firstly and then is locked and limited by the bolt and the limiting nut, and the splicing end is firm in connection and not prone to shifting.

Furthermore, the first driving mechanism comprises a first oil cylinder connected to one side of each module assembly, which is far away from the lower mold core, a piston rod of the first oil cylinder is fixedly connected with the module assembly, and a cylinder body of the first oil cylinder is fixedly connected with the lower mold plate.

Through the scheme: the die body components can be driven to be away from or close to each other through the extension and retraction of the piston rod of the first oil cylinder, and the setting is simple and easy to realize.

Compared with the prior art, the utility model has the following beneficial effects: the mold body components are adopted to replace the lower mold body with the existing annular inner ring wall, the mold body components can be mutually close and attached to form the lower mold body with the annular inner ring wall through the driving of the first driving mechanism, so that a closed forging cavity can be formed between the upper mold core and the lower mold core during mold closing, the mold body components are mutually far away during mold releasing, and the wheel hub can be directly taken down, so that the use amount of raw materials can be reduced, the subsequent raw material waste amount can be reduced, the subsequent blank spinning process can also be reduced, the production cost of the wheel hub is remarkably reduced, the concentricity can be ensured by constantly maintaining the above arrangement, the concentricity of the mold body components depends on the arrangement of a tightening ring, the tightening ring can tighten the mold body components, the extrusion gap of the mold body components caused by forging pressure is avoided, the concentricity of the mold body components is ensured, and the additionally arranged connection reinforcing mechanism plays a role in connection, realize fixed connection between the second actuating mechanism of being convenient for and the lock ring lasso, simultaneously, thereby, can also increase the thickness of fastening lasso and increase the anti deformability of lock ring lasso, prolong its life.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

FIG. 1 is an isometric view of the deformation resistant hub forging mold of the present embodiment shown open;

FIG. 2 is a front view of the deformation resistant hub forging mold of the present embodiment shown in the closed position;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

fig. 4 is a sectional view of B-B of fig. 3.

In the figure: 1. mounting a template; 2. a ferrule is tightened; 3. a reinforcing ferrule; 31. half a turn; 4. a second oil cylinder; 5. a lower template; 6. a lower mold core; 7. a lower die body; 701. a mold body assembly; 8. feeding a mold body; 9. an upper mold core; 10. offset forging; 11. a material ejecting part; 12. a through hole; 13. splicing blocks; 14. a bolt; 15. locking the nut; 16. connecting blocks; 17. a guide rail; 18. mounting a plate; 19. a first cylinder; 20. and forging the die cavity.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.

Examples

A forging die for a forming wheel hub is disclosed, and is shown in fig. 1-4, and comprises an upper die and a lower die, wherein the upper die comprises an upper die plate 1, an upper die core 9 fixed on the upper die plate 1 and an upper die body 8 fixed on the upper die plate 1 and wrapped outside the upper die core 9, the lower die comprises a lower die plate 5, a lower die core 6 installed on the lower die plate 5 and positioned right below the upper die core 9 and a lower die body 7 fixedly sleeved on the lower die core 6, a forging cavity 20 is formed between the upper die core 9, the lower die core 6 and the lower die body 7 during die assembly, an offset forging pressing part 10 is arranged at the center of the lower end face of the upper die core 9, a material ejecting part 11 is arranged in the central lifting of the lower die core 6, the lifting of the material ejecting part 11 is controlled by an ejecting oil cylinder (not shown), the ejecting oil cylinder is fixed on the lower die plate 5, and a piston rod of the ejecting oil cylinder is vertically upwards and fixedly connected with the material ejecting part 11.

Referring to fig. 1, the lower mold body 7 includes at least two mold body assemblies 701 which can be away from the lower mold core 6 or form a circular inner ring after being attached to each other, in this embodiment, there are four mold body assemblies 701, the approaching or departing of the mold body assemblies 701 is controlled by a first driving mechanism, the first driving mechanism includes a first oil cylinder 19 connected to one side of each mold body assembly 701 away from the lower mold core 6, a connecting block 16 is fixed to a piston rod end of the first oil cylinder 19, the connecting block 16 is fixedly connected to the mold body assembly 701, a mounting plate 18 is fixed to the lower mold plate 5, a cylinder body of the first oil cylinder 19 is fixedly mounted on the mounting plate 18, a guiding mechanism for guiding and moving the mold body assembly 701 is disposed between the lower mold plate 5 and the connecting block 16, the guiding mechanism includes a guide rail 17 extending along a piston rod extending direction on at least one side of the piston rod of the first oil cylinder 19 and a guide groove for guiding and sliding on the guide rail 17 disposed on the connecting block 16, the guide mechanism can improve the precision of the movement of the mold assembly 701, and ensure that the four mold assemblies 701 can form the lower mold 7 having the circular inner annular wall after the bonding.

A tight-hooping ferrule 2 clamped outside the attached die body component 701 during die assembly is vertically arranged on the upper die plate 1 in a lifting mode, the lifting of the tight-hooping ferrule 2 is controlled by a second driving mechanism fixed on the upper die plate 1, as shown in the figure, the second driving mechanism comprises at least 2 second oil cylinders 4 fixed at equal intervals along the circumferential direction of the tight-hooping ferrule 2, a reinforced ferrule 3 is fixed on the outer wall of the tight-hooping ferrule 2 at the position opposite to the die body component 701 during die assembly, the lower end of a piston rod of each second oil cylinder 4 is fixedly connected with the upper end face of the reinforced ferrule 3 through screws, and the cylinder body of each second oil cylinder 4 is fixedly connected with the upper die plate 1.

In order to increase the strength of the clamping ring 2, a connection strengthening mechanism for connecting the clamping ring 2 and the second driving mechanism and strengthening the strength of the clamping ring 2 is arranged between the clamping ring 2 and the second driving mechanism, as shown in fig. 1 and fig. 4, the connection strengthening mechanism comprises a strengthening ring 3 which is fixedly arranged on the outer ring wall of the clamping ring 2 and is opposite to the mould body component 701 during mould closing, an annular groove for embedding the inner ring of the strengthening ring 3 is sunken in the outer ring wall of the clamping ring 2, the strengthening ring 3 comprises two half-rings 31 with two ends respectively spliced and fixed or one end hinged and the other end spliced and fixed, in the embodiment, one end of each half-ring 31 is hinged with each other, the other end is arranged to be a splicing block 13 spliced with each other, the two splicing blocks 13 are fixedly connected with each other through a bolt 14 or a screw after being spliced with each other, in order to further simplify the assembly, the two splicing blocks 13 of the embodiment are provided with a through hole 12, adopt bolt 14 to pass the mode of through-hole 12, it fixes to set up lock nut 15 at bolt 14's both ends with the concatenation end locking of two half-rings 31, the horizontal extension of the piston rod tip of second hydro-cylinder 4 has a fixed block, fixed block and enhancement are fixed through screw locking between the 3 up end of lasso, the aforesaid sets up, strengthen lasso 3 and lock hoop lasso 2 and be connected the back, it can supply the piston rod of second hydro-cylinder 4 to expose the up end to connect, it is convenient to connect, strengthen lasso 3 and lock hoop lasso 2 and lock hoop die body subassembly 701 jointly, can reduce the deformation rate of strengthening lasso 3, the service life of the device is prolonged.

The forging die for forging the wheel hub comprises the following steps:

1. the mold body assembly 701 is closed to form a lower mold body 7 with an annular inner annular wall: a piston rod of the first oil cylinder 19 extends out, and the 4 die body assemblies 701 are close to each other under the guidance of the guide mechanism until the die body assemblies are attached to each other in a seamless manner;

2. placing the rough blank: the heated rough blank (rough blank with proper weight calculated) is placed between the lower die body 7 and the lower die core 6;

3. die assembly forging: firstly, driving a piston rod of a second oil cylinder 4 to extend, descending a hooping ferrule 2 to hoop outside a lower die body 7, then driving an upper die core 9 to descend by an upper die plate 1 under the driving of a forging oil cylinder (not shown) until a forging cavity 20 is formed among the upper die core 9, the lower die body 7 and a lower die core 6 to forge a hub rough blank, and passively retracting the piston rod of the second oil cylinder 4 into a cylinder body of the upper die plate 1 in the descending process;

4. opening the mold: the forerunner retracts the piston rod of the forging oil cylinder, the upper template 1 rises, the upper die core 9 is separated from the forging cavity 20, at the moment, the piston rod of the second oil cylinder 4 passively extends to the cylinder body, and the hooping ferrule 2 is still in the state of hooping the lower die body 7; then the piston rod of the second oil cylinder 4 retracts, and the tightening ferrule 2 rises to separate from the lower die body 7; and finally, the piston rod of the first oil cylinder 19 retracts to drive the die body assemblies 701 to be away from each other, and at the moment, the forged hub is only placed on the lower die core 6 and can be directly taken down under the light jacking of the material jacking oil cylinder.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described above, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an anti deformation wheel hub forges mould, includes mould and lower mould, and the lower mould includes lower bolster (5), installs lower mold core (6) on lower bolster (5) and fixed cover connect lower die body (7) on lower mold core (6), goes up mould and includes cope match-plate pattern (1) and be located last mold core (9) directly over lower mold core (6), goes up mold core (9), is formed with between lower mold core (6) and lower die body (7) when the compound die and forges die cavity (20), its characterized in that: lower die body (7) include that two piece at least can keep away from lower mold core (6) each other or form circular inner ring laminating in die core (6) outer die body subassembly (701) down after laminating each other, being close to each other or keeping away from of die body subassembly (701) and being controlled by first actuating mechanism, vertical lift is provided with one and presss from both sides tight hoop lasso (2) outside die body subassembly (701) after the laminating when the compound die on last mould, the lift of tight hoop lasso (2) is controlled by the second actuating mechanism on being fixed in cope match-plate-pattern (1), be provided with between tight hoop lasso (2) and the second actuating mechanism and order about both interconnect and strengthen the linking strengthening mechanism of tight hoop lasso (2) intensity simultaneously.

2. A deformation-resistant hub forging die as set forth in claim 1, wherein: the second driving mechanism comprises at least 2 groups of second oil cylinders (4) which are uniformly arranged around the tightening ferrule (2) at intervals in the circumferential direction, the cylinder body of each second oil cylinder (4) is fixed on the upper template (1), the piston rod of each second oil cylinder (4) is vertically arranged downwards, and the end part of each piston rod is fixedly connected with the connection reinforcing mechanism.

3. A deformation-resistant hub forging die as set forth in claim 2, wherein: the connection reinforcing mechanism comprises a reinforcing ferrule (3) which is fixedly arranged on the outer ring wall of the tight-hooping ferrule (2) and is opposite to the die body component (701) during die assembly, and the end part of a piston rod of the second oil cylinder (4) is fixedly connected with the upper end face of the reinforcing ferrule (3).

4. A deformation resistant hub forging die as set forth in claim 3, wherein: the outer annular wall of the hoop ferrule (2) is sunken to form an annular groove for embedding the inner ring of the reinforcing ferrule (3), the reinforcing ferrule (3) comprises two half rings (31) with two ends respectively spliced and fixed or one end hinged to the other end, and the splicing positions of the two half rings (31) are fixedly connected through a fixing structure.

5. A deformation resistant hub forging die as set forth in claim 4, wherein: the fixing structure comprises splicing blocks (13) which are arranged at the splicing ends of the two half rings (31) and can be spliced with each other and through holes (12) which are correspondingly arranged on the splicing blocks (13) of the two half rings (31), a bolt (14) is arranged between the two through holes (12) in a penetrating way, and limiting nuts which are used for keeping the two splicing blocks (13) in a splicing state are arranged at the two ends of the bolt (14).

6. A deformation-resistant hub forging die as set forth in claim 1, wherein: the first driving mechanism comprises a first oil cylinder (19) connected to one side, away from the lower mold core (6), of each mold body assembly (701), a piston rod of the first oil cylinder (19) is fixedly connected with the mold body assembly (701), and a cylinder body of the first oil cylinder (19) is fixedly connected with the lower mold plate (5).